General Relativity Explained simply & visually Arvin Ash

General Relativity Explained simply & visually Arvin Ash 4.5M views 2 years ago #einstein #generalrelativity Get MagellanTV here: https://try.magellantv.com/arvinash and get an exclusive offer for our viewers: an extended, month-long trial, FREE. MagellanTV has the largest and best collection of Science content anywhere, including Space, Physics, Technology, Nature, Mind and Body, and a growing collection of 4K. This new streaming service has 3000 great … 6,695 Comments rongmaw lin Add a comment... Nate Cooper Nate Cooper 1 year ago Imagine being that window washer and living your whole life completely oblivious to the fact that you helped Albert Einstein figure out how the entire universe worked. 2K Reply 79 replies LightestSeed LightestSeed 3 months ago Stuff like this is so interesting to me. I’m a 16 year old who doesn’t like school, and yet my science teacher was passionate enough about physics and astronomy/cosmology that it got me so invested in it to the point where I go out of my way to look up things like this just because it’s so mind-blowing! 122 Reply 11 replies Abraham Tellez Abraham Tellez 9 months ago I can't thank you enough for making this. I'm 32, and for almost 20 years I thought never in my life would I ever be able to really understand this, I thought I simply wasn't smart enough to ever truly grasp it, but now, thanks to you, I feel I can begin to visualize it, got a lot more to learn of course, but I'm certain that I'll comprehend it. Thank you, this made me incredibly happy. 368 Reply 14 replies Roland Nelson Roland Nelson 10 days ago That was a masterclass in teaching. Like a mother crow that flew off, found and caught the worm, chewed it up brought it home. The student simply had to keep their mouth (mind) open. Well done. 3 Reply David VonAllmen David VonAllmen 3 days ago I've watched dozens of videos on general relativity, trying to wrap my head around it, and this is definitely the best one I've found. I feel I've got a much stronger grasp of the concepts than I did before. Thanks! 1 Reply Steven Mason Steven Mason 6 months ago I have watched dozens of videos about relativity in an attempt to understand it completely. I have read Einstein's book called relativity, and I have talked to physicists about this in real life. This video does more to explain the theory than anything else I've ever seen. Thank you and cheers. I still don't totally understand relativity, but then again, I'm told there's only about 12 people on Earth that truly do. 66 Arvin Ash Reply 5 replies Invincible Warrior123 Invincible Warrior123 2 years ago (edited) sometimes a 14-minute video does more justice than those 14 years at school! 4.6K Reply 163 replies Sofia Ceballos Sofia Ceballos 7 months ago For the first time in 21 years I can say that I’m starting to understand relativity/gravity/time and now I’m super interested on it! I want to understand more! Thank youuuuuuu 40 Reply 1 reply Nagilum Nagilum 9 months ago 8:16 That’s a great way to visualize the effect matter has on space time. I have never seen it presented in this way before. Really cool! 85 Reply 5 replies R96 RED R96 RED 2 months ago Damn! This guy really breaks it down because he understands it properly. Not a single other video online can simplify it like he could. Kudos Arvin, you're amazing! 7 Reply code_made_easy code_made_easy 1 month ago He taught me my whole semester in these 12 minutes 1 Reply ಕನ್ನಡ KannadaFirst ಕನ್ನಡ KannadaFirst 2 months ago Simply the best explanation of Einstein's work I have ever come across. Genius 🎉 1 Reply Don Corleone Don Corleone 2 years ago (edited) Shout out to the window washer. Without him this video would not exist. 2.4K Reply 71 replies Astronomy, nature and music Astronomy, nature and music 7 months ago The point where I finally am able to internalize the time going slower was: the two lines being drawn at 11:03. speed is the same, distance is larger in the curve, thus: time must be 'larger' as well. Thank you! 1 Reply Science Geek Science Geek 6 months ago The most profound and concise video I watched explaining the theory of general relativity. 👏👏 48 Reply 1 reply Justin Baker Justin Baker 7 months ago You did an amazing job going through each line of logic building up perfectly. Thanks ash! 8 Reply GetBackerz GetBackerz 10 months ago (edited) To be perfectly honest...this is the best explanation that ive seen about the theory to finally get it at last....Big thanks to you sir and to youtube algorithm for recommending this video at 3am while Im tryin to sleep 1 Reply Ry Book Suraski Ry Book Suraski 1 year ago Thank you so much for explaining special relativity so well, I've been struggling to understand how exactly time fits into the whole thing even though concepts related to bending space are pretty intuitive. Great video! 5 Reply kirom kirom 1 year ago Now I know how my dog feels when I'm talking to it. 2.7K Reply 66 replies alein2012 alein2012 7 months ago Beautifully explained. First time someone has explained this theory in a simple and detailed way. 👏 12 Reply Hailey Shanken Hailey Shanken 1 year ago Wow. You explained it perfectly! I had such a hard time understanding it but you did an excellent job 6 Reply Aredde Serkle Aredde Serkle 1 year ago Stunningly simple explanation of a massively complex subject. Thank you. 5 Reply Cavan Lee Sears Cavan Lee Sears 1 month ago Arvin, you have just explained something to me that I've been trying to understand for years. I now know what physicists mean when they say that the speed of light is a constant wherever you are in the universe! Thank you! 1 Reply Rabarbaraaa Rabarbaraaa 5 months ago Thank You so much for this video! I think space and physics are so fascinating. It was hard for me to find someone who could explain something so complicated as easy and simple as you! Even me, a 15 year old, could understand the basics that you showed us and I’m very greatful:) Definitely subscribing👍 6 Reply 1 reply asdf asdf 2 years ago When you see it, it's like oh cool. But when you actually start thinking about it, it's so insane. 2.4K Reply 32 replies Justin Popeney Justin Popeney 1 month ago Wow, the illustration of how time “slows” for those in lower gravity really helped me understand that concept! Now I can rewatch Interstellar and feel smarter! 😂 3 Reply Grey Ocean Grey Ocean 1 year ago This guy's the absolute bomb. Best physics videos on Youtube, bar none. Nothing I've seen matches his powers of clarification and explanation, combined with highly effective visuals. Outstanding. 1 Reply Lostboy Lostboy 10 months ago amazing explanation! i have a science test tomorrow, and honestly the textbook’s very boring, these videos make those boring topics so interesting! the animation was lovely too! 4 Reply GetToThe Point_Already GetToThe Point_Already 5 months ago Brilliant as usual Mr Ash. It takes no genius to make the complex difficult. It takes genius to make it simple, and sir, for that you have a special gift. Thank you for sharing it with us. 1 Reply Anthony Costa Anthony Costa 9 months ago I find you your explanations with illustrations are very good thank you so much. 2 Reply IgorRyltsev IgorRyltsev 1 year ago Finally, 16 years after my graduation someone properly explained it! Great Video 1K Reply 53 replies Mario Saraiva Mario Saraiva 4 months ago Best explanation of Special Relativity I've ever seen. Especially loved the 3d model. Hate that 2d model to demonstrate the curvature bc to the observer it implies the curvature happens on the plane (for me always gave me a headache to see it bc that's not how it ought to be portrayed). Do you have a video on special relativity? 4 Reply Salome Phachuashvili Salome Phachuashvili 9 months ago I always thought I understood it, but whenever I tried to explain it I failed. This is the first time I finally overcame this problem ❤️ 6 Reply Axkuebiko 001 Axkuebiko 001 4 months ago Amazing! You really get the point when you explained it sir. Grateful I watched it 1 Reply Jason Amodeo Jason Amodeo 1 year ago You took a most complex subject that even physicists during Einsteins day couldn't quite understand , I applaud sir for making a most difficult subject such as space time understandable ! Bravo 👏 21 Reply 2 replies Dinesh Ravi Dinesh Ravi 1 year ago Excellent video my friend 👏👏 I feel like I just got smarter cause this is the first time I’ve understood Einstein’s theories properly, much more clearer than before. Thank you 🙏 2 Reply Srikar Mallik Srikar Mallik 1 year ago This guy is a genius for making it so easy to understand 575 Reply 16 replies Emo_Galaxy Emo_Galaxy 2 months ago Thank you for this video. I at times feel like I have a grasp of the subject. Then there are times i realize that I know nothing. But the good thing is I get a little less dense each time the understanding of not knowing increases. I liked how you represented the dilation of space time in 3D. It has always bothered me trying to imagine it in my head. I always came up or picture apposing forces which is not what we have. I like how it is distorted in the same direction in a directions if that makes sense. Yeah right lol. Anyway I really did get a great deal from this video and a great job presenting the amazing thing that is our universe! Reply 옹 잉 옹 잉 5 months ago Your explanation is very good to understand. Thank you! 2 Reply Suburban Quails Suburban Quails 6 months ago Thank you very much for the clear explanation and illustration of such a complex concept. I never thought I would be able to understand the theory of relativity. Respect. 4 Reply cheryal Hussain cheryal Hussain 8 months ago (edited) I never appreciated science and higher maths but your short video made it very interesting and found the subject fascinating. 2 Reply Simply Science Simply Science 9 months ago (edited) Thank you for this amazing video! This was first time when I saw a 3D simulation of bending space. Theres this question really bothering me though. When a 1D line bends, if we look from one dimensional perspective, it looks like it is shrinking. Only when we look from 2 dimensional perspective, we can see the bend. Similarly, when a plane bends, from a perspective parallel to plane it will look like plane is shrinking. Only from other view, not parallel to plane, we can see that plane is bending. Now coming back, the simulation showed a point 'distorting' the space, shouldn't it be like the space is shrinking, and from a 4 dimensional view, it will be seen like the space is bending? Shall this not be pointer towards the fact that more dimensions exist? 6 Reply riiad riiad 2 years ago (edited) 2 things that make those videos great : 1. The animations 2. The quality of the questions he asks. It's like he's in your head. I hate it so much when people pretend to explain a concept and leave obvious questions unanswered. Thank you Arvin Ash. 148 Arvin Ash Reply 1 reply Cleander Cleander 7 months ago Very well explained. Bravo! 1 Reply Pedro Resendiz Pedro Resendiz 11 months ago This video is clear and concise. The 3D plot of space warp was really helpful. The graphics and explanation of light bending around the sun (stars on different position than during night) and the one of dilation of time were something I've been missing in other videos/explanations on this topic. Great job at summarizing and explaining in simple terms. Thanks 👍👍. 14 Reply 1 reply Faisal Azam Faisal Azam 5 months ago Hell!this is humongous Put so simply Unraveling a complicated theory to make it appear this easy.great job Sir. Hats off to you to bring this in the reach of a layman👍 1 Reply Magic Draw Magic Draw 1 year ago It could not have been more simplified. Great video. 👍👍 1 Reply J. Curtis J. Curtis 1 month ago Absolutely superb. Sir, you are masterful at your craft. 1 Reply Entoy The Dragon Entoy The Dragon 2 years ago Arvin, your students are so lucky to have a professor like you. Thank you so much for this. Keep it up. 171 Reply 12 replies MKS Foundation by Siddharth Sir MKS Foundation by Siddharth Sir 8 months ago You explained very nicely. Things are much clear to me now. 5 Reply Ali R Ali R 9 months ago Best explanation about general relativity I've seen yet👍👍 1 Reply Dallas M Dallas M 8 months ago Physics is so cool once you begin to understand it! Thanks so much for this video. 1 Reply Summer Nights Summer Nights 6 months ago Thank you for this video! It was super informative and so well explained 🤩🔥👍 1 Reply liam daniel liam daniel 10 months ago The result of making such a straight to point video about such an intense subject is the best video 2 Reply Wet Pigeon Wet Pigeon 2 years ago This channel is incredibly good at explaining concepts that I've heard hundreds of times, but presenting them in a way so that I can actually UNDERSTAND them. 221 Reply 7 replies J Mo J Mo 6 months ago To think of the genius that Einstein possessed is incredible. How he was able to think all of this through back in the early 20th century with a lot of naysayers trying to discredit him just for good measure and still knock it out of the park and revolutionise physics and humans understanding of the universe is just legendary. 11 Reply 1 reply Mark M Mark M 5 months ago There is nothing like the combination of simple explanations, combined with really good graphics, to help me understand gravity. Thank you for making such a good video. 5 Reply Video Master Video Master 1 year ago 8:06 So nice to see an accurate 3d representation of gravity's effect on space! 3 Reply Jyotsna Mishra Jyotsna Mishra 2 weeks ago Thank you for explaining in such simple words.....I am 11 y/o and wanted to read a book by Stephen hawkings (The theory of everything) for which, i needed to understand the base concept of the general theory of relativity. And this has really helped me out. Reply Vedant Sakpal Vedant Sakpal 1 month ago The best way of explaining such a deep theory in the simplest possible words. Excellent job!!!!!!!! 1 Reply Devrim Eskibina Devrim Eskibina 1 year ago Sir, I am a second year engineering student, and this is the first time that I've (At least I think) I understood the General Relativity. Thank you so much! 315 Reply 15 replies Basement Level News Basement Level News 1 year ago The explanation of the observed star versus its actual position really helped me understand how time can be distorted. 1 Reply Anwar Hossain Anwar Hossain 11 months ago Complex matter easily explained. Great job. 1 Reply Comic.Riddler Comic.Riddler 5 months ago Thanks for making this easy to understand, I'm 13 tried my best to grasp this for 2 years. You helped me fully to understand that. 1 Reply dirtyjew1974 dirtyjew1974 11 months ago Kudos for breaking this down in a way I can understand it! 1 Reply Cameron Lynch Cameron Lynch 11 months ago My first watch on this channel and I really enjoyed it! You explain this really well to a layman like me 1 Reply A Cooper A Cooper 1 year ago By far, this is one of the best explanations of general relativity I have encountered. Well done, Arvin! 109 Reply 3 replies G1 G1 2 months ago Wow you explained it soo well It took very hard time for me to understood it but after seeing your videos I easily am Abel to understand all these things 1 Reply Gabriel Owh Gabriel Owh 6 months ago As someone who is studying this, thank you for finally providing a clear, comprehensible explanation to my dad. 1 Reply Szabolcs Jobbágy Szabolcs Jobbágy 6 months ago This the video from which I FINALLY UNDERSTOOD the meaning of spacetime, and the bending effect of gravity, after watching lots of videos. Thank you, Sir!!! 1 Reply MrJason005 MrJason005 10 months ago This is a really excellent description of general relativity, bravo!! 3 Reply That Gaijin Fella That Gaijin Fella 8 months ago This was by far the most easy explanation of this phenomenon I’ve ever seen! 20 Reply Brayden Gehlhausen Brayden Gehlhausen 2 years ago I have been struggling for years to grasp the concept of general relativity. So happy I found this video. You explain it so well. Thank you! 119 Reply 15 replies AllAboutYouTubers13 AllAboutYouTubers13 4 months ago Easily the best I’ve heard explaining but with past studies it’s made me understand it now like I do so everyone else wanting a good concept just keep watching these videos on subject until it clicks in your head 🤩👌👍👍👍 Reply Margaret Louis Margaret Louis 4 days ago Wow thank you so much I think I finally understand the basic concept of space time Amazing video 1 Reply Mehmood Ahmed Mehmood Ahmed 10 months ago Sir, you explain complicated concepts in very simple and plain english which everyone can undestand easily. Hats off to you. 1 Reply chulander chulander 5 months ago Fascinating and well illustrated. Thank you 2 Reply Harry St.G Levy Harry St.G Levy 5 months ago Arvin Ash ;you know how to teach; AND how your student learn! MORE POWER TO U. 1 Reply JITENDRA CHANDRAVANSHI JITENDRA CHANDRAVANSHI 2 years ago You are a bacterium that breaks down complex concepts into simpler ones. 426 Reply 16 replies Charles Nazare Charles Nazare 6 months ago Thanks for connecting the dots in your easy to understand explanation. Well done! 1 Reply GreensGangrenes GreensGangrenes 11 months ago I was always curious with gen relativity. Not a math or physics major so I cant learn these stuffs at school. Thank you! 1 Reply SergiuM42 SergiuM42 9 months ago I feel like I finally understand this theory. Thank you!! 1 Reply jtridexter jtridexter 6 months ago Love your videos, very educational! 3 Reply E B E B 6 months ago The way you explain this is amazing! 1 Reply MMK Gregorian MMK Gregorian 2 years ago Mr. Arvin Ash, you are the first person who have made me understand this whole mystery very clearly. Whatever the lectures I watched, my understanding was completely obscured. I hope you would keep simplifying scientific topics and uploading new videos as time passes by. I wish you a very active brain and good health. Thank you. 58 Reply 10 replies DipsticksOfficial DipsticksOfficial 1 month ago It's been a very long time since I last learned so many interesting facts from one short video. Thank you. 1 Reply Arianator MJ Arianator MJ 2 months ago I am 13 and this was super easy for me to understand, even though German is my mother tongue! Thanks a lot! ❤️ 2 Reply 1 reply Jsh J Jsh J 6 months ago You explain things so well! Reply Rob Smissen Rob Smissen 8 months ago Nice job! I had low expectations but you certainly exceeded them! 1 Reply James Radcliffe James Radcliffe 2 months ago This video really help my little brain understand a little more about General relativity. Thank you 1 Reply RJ Weissenborn RJ Weissenborn 2 years ago It’s crazy we used to have to read books to learn stuff like this 363 Reply 11 replies Nico van Dyk Nico van Dyk 9 months ago By far the best and simplest explanation I have ever heard! 1 Reply Darrell Cherry Darrell Cherry 1 year ago Contemplating time was most difficult for me. Thank you for your explanation. 1 Reply Pianobunzz Pianobunzz 3 months ago I have tried to read many books but now I finally understand this theory from your clip. Thanks a lot. 1 Reply MarcusAur3lius MarcusAur3lius 2 months ago Amazing video...though I wouldn't say I fully understood it, for the first time in my life it makes a a lot more sense 1 Reply Infinity Infinity 1 month ago THE FIRST VIDEO THAT EXPLAINED SPACE-TIME PROPERLY ON YOUTUBE!Thank you.. 1 Reply Mike P Mike P 1 year ago I'm in my 50's and this video is the first time I really understood time dilation as it relates to gravitational fields. Terrific video! Could have used a physics teacher like you in high school 😆 144 Reply 2 replies Colum O Driscoll Colum O Driscoll 11 months ago This is one of the best explained videos, well done. 1 Reply Gfamz Gfamz Gfamz Gfamz 2 months ago Thank you so much!!! This is so helpful for my physics test 1 Reply Pilletta Doinswartsh Pilletta Doinswartsh 9 months ago In the peace and tranquillity of his office, a flash of inspiration came to him in 1907, which he later described as "the happiest thought of my life": "I was sitting on my armchair in the Bern Patent Office, when suddenly the following thought occurred to me: 'If a person is in free fall, he does not feel his own weight'. I was amazed. This simple thought made a deep impression on me. It drove me in the direction of a "theory of gravity" - and thus on the way to the general theory of relativity. 4 Reply Fake Trump Fake Trump 9 months ago best explanation on curved space I've got so far. thanks. if you could get a 3-D drawing of a curve space (not the moving one in the video), it'd be perfect. 1 Reply Stuart Robb Stuart Robb 1 year ago Beautifully explained! 1 Reply math&physics with intuition math&physics with intuition 1 year ago As an engineer who has always been passionate about math and physics, I was intrigued by modern physics, despite neither relativity nor quantum mechanics were part of any course syllabus at my university. I studied these subjects on the side and found them really inspiring, I would go as far as to say that they gave me a novel perspective on life itself. That prompted me to create some online courses on Udemy on Quantum Mechanics, Quantum Field Theory, special and General Relativity. It’s not my job of course, but I love talking about these topics while using some mathematics for “intuition”. And I also love watching these videos Arvin, superb! 50 Reply 1 reply User_404 User_404 5 months ago You made me understand this better than any other video on YouTube 👍🏻 1 Reply Rodney Dangerfield Rodney Dangerfield 6 months ago Thank you, Arvin, for the best "Theory of Relativity" explanation video! 1 Reply Neil Virgo Neil Virgo 11 months ago excellent presentation - i think I understand it a bit more now thanks to your analogies 1 Reply automatic mattywhack automatic mattywhack 8 months ago I love how he used the Hubble Deep Field photo to show the window washer falling thru space. That photo is incredibly important as well. 1 Reply Mike Sims Mike Sims 9 months ago You have a great style when you teach, and you have a skill for simplifying dense concepts. Well done and thank you. 1 Reply Arvin Ash · 1 reply Musthafa Musthafa 2 years ago Never imagned that someone could explain this in just 14 min. Hats off to you, Sir. 33 Reply Daniel Jones Daniel Jones 7 months ago This is such an excellent presentation. 1 Reply Metta Good Metta Good 11 months ago I though science wasn’t for me but this video was amazing thank you so much! 2 Reply Mohammad kw Mohammad kw 1 year ago I have a physics exam next week and that got me hyped us to study physics 🔥 4 Reply Jace Ware Jace Ware 9 months ago Awesome video. Thank you. Helps me understand things so much better! 1 Reply Jim Jenke Jim Jenke 11 months ago Enjoyed the "marble in the cube" effect. Closer to the real curvature of space-time shown in 2-D. Thank you 2 Reply kopi bin kopi bin 2 years ago Im a clerk. And also discovered a theory of relatively of time. Time slowdowns on monday. And speeds up on payroll day. 873 Reply 21 replies Devin Watson Devin Watson 9 months ago So it’s basically how I’ve been explains relative generality to people my entire life 2 Reply Neerajan Khanal Neerajan Khanal 1 year ago 😍After many years watching all videos of relativity Finally this video made me all clear …thanks man 😇 1 Reply Skot hoosy Skot hoosy 11 months ago This is the best explanation I’ve ever watched. Or at least the most understandable 2 Reply Lucas Tostes Lucas Tostes 9 months ago I like the 3D space time sample. It's easy for me to process. Do you have one with the whole solar system? Reply youtube shorts youtube shorts 11 months ago I've never been so clear about this topic... this is how teachers should teach us 1 Reply P Duhovic P Duhovic 1 year ago Great teachers can explain difficult matter in simple terms. You Mr. Ash are one of them 21 Reply saheb choudhury saheb choudhury 8 months ago Arvin, you have explained it the best. No explanations on the internet have so far been this crisp and clear. You are awesome. Thank you so much. 3 Reply thomas panebianco thomas panebianco 4 weeks ago Best explanation to date of this theory for me.... thanks 👍 Reply Dmitry Shevkoplyas Dmitry Shevkoplyas 8 months ago Arvin, thank you for the great videos! How about this idea: we have 1-car train, 2 observers (1 on station - Stef, 1 on train - Tracy), and a small light bulb in the centre of the 1-car train that will produce for simplicity 1 short flash of light with the brightness of a candle at the exact moment when one observer passes another. On the ends of the moving 1-car train we'll have regular photo cameras so it captures the flash and by captured image (angular size and brightness) Tracy can eventually roughly estimate the distance from the camera to the lamp, which would be close to 1/2 of the car length. Now let's run the train a few times with a constant speed each time closer and closer to the speed of light. Obviously with no acceleration between the flash and light reaching both cameras - no matter how fast the train goes the result images captured by 2 cameras will be pretty much the same across all experiments (camera on the front will give almost exact same images whether train goes at different speeds or simply stays in one place. The rear camera would produce a very similar set of almost identical images throughout different experiments since distance to the light source is the same and "The laws of physics are the same in all inertial frames of reference"). And yes - as we know: the simultaneous events in one frame of reference would not be simultaneous in another and vice versa, also the train will shrink more and more the faster it goes from Stef point of view and similarly the flying-by station will shrink for Tracy, but it is not the point here. Let's concentrate on the front camera (facing backwards), which flash of light has to catch up (from stationary Stef point of view). We will take Stef's perspective on it now.Stef can see the exact place where the light finally catches the front camera, which can be far from the station. The faster the train goes the further away from the station this point will be! We can choose the train speed so that the light reaches the front camera 98K light years away (near Ursa Major II Dwarf) from the station! Now if we imagine Stef travel 98K light years away to assume another stationary position (not moving relatively to the original train station on Earth) and hangs in his fancy rocket ship with exact same regular camera in hands and waits for another flash of light coming from our ongoing periodic experiments, if he manages to speed-up his camera inside his stationary ship-lab so that camera sensor is flying away from the original light source at the exact same speed as the camera on the train, then his camera would produce exact same result as the camera on the train, which is regular image of small lamp only few meters away from the lense(!), bright enough to see all it's details!!! Basically you need to move the camera fast enough from the observed object to squeeze the space (up to the whole universe going almost as flat as a sheet of paper!) And this is mind blowing! If Stef sitting far-far away and trying to take a picture with his camera without moving it (regular way), then only 1 or 2 photons per years will hit is lense, while if he moves camera fast enough away from the observed light source then suddenly billions of photons end up inside his lense (as if he's standing 1/2 train car length away from the source). What if he now turns this upgraded "fast-moving-sensor-camera" FMSC towards the Sun while standing on Earth and calculates sensor move speed so that it takes a picture as if 1 mile away from the Sun surface? Will it suddenly completely burn the camera (one can think of fancy lighter which allows you to smoke from the Sun no matter how far)? Also we don't have to actually move real camera inside our "stationary" lab, instead our "fancy sensor" can be implemented as a simple stream of ionized particles accelerated to the desired constant speed traveling away from the observed object at any desired speed, we only need to make them excited (or to loose pre-excited state) if photons from the observed object hit our stream of particles and then detect it somehow in the stationary lab. Also for the stationary remote observed objects we don't have to try to invent the whole "moving away sensor". We have constant stream of photons from the remote object (not just 1 flash), for example some star or some galaxy. Thus we can "scan" our view field pixel by pixel slowly using one fast particle moving in a loop with controlled speed and somewhat controlled position. Btw, due to uncertainty principle (which says: we cannot know both the position and speed of a particle) we can use lenses in our "camera" and we can make our "sensor area" as large as we want (for example instead of trying to make a sensor area around 1 square centimeter as inside our eye, we can blow up the sensor screen area to few meters by meters) , so we can get any desired "resolution", thus the uncertainty principle is not a problem. Cheers, Dmitry Shevkoplyas 1 Reply shide shide 10 months ago thank you so much for this video. I finally understood what is gravity after 11 years graduated 1 Reply Stephen Kayara Stephen Kayara 5 months ago Thank you sir, you explained something that was always confusing me. Reply Quidisi Quidisi 2 years ago Okay, you were already THE BEST at explaining difficult concepts - but now you've stepped up to a whole 'nother level! 30 Reply Wisdom Central Better Life Wisdom Central Better Life 1 year ago Beautiful explanatory video, with nice explanation. Loved the calm voice of the narrator. Directly connects with the viewer. 1 Reply Shaun Hayward Shaun Hayward 9 months ago I've just watched 2 of your videos. I feel like I understand more now than I've understood from YouTube over the last several years. 4 Arvin Ash Reply Bilal Haider Bilal Haider 11 months ago Amazing lecture professor thanks 👍 1 Reply Airplane Mechanic Airplane Mechanic 9 months ago Knowing time is the variable helps me understand why the speed of light is constant. Thanks! I wonder if dark matter/energy is the missing link to allow the two equations to agree? Reply youstron sic youstron sic 7 months ago No drama, no fancy words, no fiction, amazingly explained... thank you 3 Reply Hariharan Sankaran Hariharan Sankaran 2 years ago Perhaps my first comments on a YouTube video. I accidentally came across your videos... I must say they are fantastic. This one, the special theory of relativity, importance of Maxwell... all so well described. And the explanations are logica with right amount of graphics. There is absolute clarity... 6 Reply Marisol Ceja Marisol Ceja 1 year ago I loved this video. Thank you for making it easy to understand and interesting! 1 Reply Bi Si Bi Si 4 months ago This is the best video I've found on the subject so far. Thank you, I'm starting to understand a little bit... 1 Reply Jeff N Jeff N 10 months ago It's not just gravity that distorts time, it's age. Now that I'm old, looking back at my life, it went really quick. Reply PRAMIT CHOUDHURY PRAMIT CHOUDHURY 11 months ago Wow just waaooo ... I am speechless .... the way of simplifying the concept is more astounding than the theory itself ..... 1 Reply Prasad Shrivatsa Prasad Shrivatsa 10 months ago The "time" part in "spacetime" is now much clear to me. Thank you. Reply Hassan Akhtar Hassan Akhtar 2 years ago What a brilliant and simple way to explain. Massive respect! 3 Reply BIGREDDOG09 BIGREDDOG09 9 months ago That was a good explanation, slightly different than the other 40 or so I've ever heard so it was interesting 2 Reply z z 5 months ago AT LAST!!!!!!!! Thank you thank you thank you, never over the years i could really understand it, but this video finally made me really understand. The 3d space-time animation is also much more usefull than the more common 2d representations. 1 Reply Nm Nm 2 months ago great explanations, thank you! 1 Reply ArturSoares ArturSoares 8 months ago I finally understood it with your explanation! Nice vídeo! 1 Reply martynewport martynewport 8 months ago Thank You! So good in teaching the correct concepts. I learned here!!!! 1 Reply Ady Nathan Ady Nathan 2 years ago I really liked the 3d version at 8:09 awesome! 221 Reply 12 replies NoMeWithoutYou NoMeWithoutYou 5 months ago Arvin, thank you so much for this great explanation. I finally understand the theory behind the curvature of space and its relevance to time distortion. 2 Reply Rishabh Sharma Rishabh Sharma 6 months ago (edited) I can't thank you enough Sir. 1 Reply SUNIL RAUT SUNIL RAUT 5 months ago I really understood time dilation at the age of fifty i was not able to understand this concept but today i completly understood the concept of time dilation 1 Reply Low end studios Low end studios 4 weeks ago Awesome explanation. I loved it. Reply Mark Dwyer Mark Dwyer 1 year ago This is such an enlightening video. Also, thank you for underscoring the sad fact that Einstein's thinking was called into question because he was Jewish. What one has to do with the other is utterly perplexing, but we need to be reminded that such biases continue today. You do great work, Arvin. 1 Reply Arvin Ash · 1 reply SL SL 2 years ago You can’t find a better explanation on the web explaining why time actually runs slower in gravitational fields or at lightspeed. 968 Reply 77 replies ur beautiful ily ur beautiful ily 9 months ago i'm tearing up. i finally understood time dilation. i cannot thank you enough. 6 Reply Jay Potterton Jay Potterton 7 months ago Thank you for this excellent explanation. 1 Reply Dean Coronado Dean Coronado 4 months ago I like how the Wilhelm Scream when the guy falls off the ladder adds humor, warmth, and a connection...to such complex thoughts and theories. 1 Reply anthony cooper anthony cooper 9 months ago Excellent video! Well done. 1 Reply Arup Sanyal Arup Sanyal 3 months ago I m fan of your videos from today .. this subject was very hard to understand .. your explanations helps … subscribed 1 Reply sabari87 sabari87 2 years ago I watched “why is the speed of light what it is” from this channel right after this video and spent a good hour connecting all the dots between concepts I have read a 1000 times before. Basically went from electromagnetism (maxwells equations) —> generation of electromagnetic waves (astounding explanation!) —> propagation through space at a constant speed —> forcing gravity to cause curvature of space —> which in turn affecting time —> thus the idea of space-time. Amazing explanation! Was sure an eureka moment for me. 54 Arvin Ash Reply Arvin Ash · 8 replies GRIMXXSNIPER GRIMXXSNIPER 5 months ago Guy was such a genius that the thing we can't even understand he found it out made predictions out of it Reply highflyer highflyer 9 months ago Most simplified explaination with analogy of Einstein's general and special relativity. 🙏. Thank you so much. 1 Reply RYANWILLIAMS RYANWILLIAMS 7 months ago Best explanation on relativity. Thanks! 1 Reply roadArt roadArt 9 months ago (edited) I think this is the first time I'm starting to really grasp this.. thank you for breaking it down in such simple and understandable explanation.. there's just one doubt. when comparing the speed of light from stationary to a moving position, there is no such thing as stationary there is no absolute stillness anywhere in the universe.. I think that's just a human fabrication Reply guywthclss guywthclss 7 months ago Thank god someone finally represented this in 3D. The 2D representation, I've always thought, was ridiculous and confusing to the layperson because it visually still "looks like" the objects are weighted down on some abstract matrix. Of course I knew this could not be the case and it must act uniformly in all areas but still, the 2D representation without even a verbal or written caveat that the 2D model is incomplete and that it's really acting in 3D, always struck me as very armature pedagogy! Shame on those teachers!!! 1 Reply Ashen Shugur Ashen Shugur 2 years ago Arvin, you have out done yourself! Amazing video. The best one out there on this subject. I mean you even included what 3d space looks like warped! Way to level up your game! 9 Reply robert jordan robert jordan 6 months ago I love how Einstein, one guy, went up against the entire scientific "consensus" and proved everyone wrong. I wish he would have lived long enough to figure out how to tie quantum mechanics in. The random/probability-based nature of quantum mechanics makes it seem like we are missing the real underlying nature of what's going on. It's better than nothing, but really doesn't seem complete. 21 Reply 1 reply Samuel Antwi Samuel Antwi 9 months ago Nicely explained sir. Thank you 2 Reply Aditya Raj Aditya Raj 5 months ago Sir, please make detail video on Gravity and what gravity is.And one more thing Make videos on quantum gravity. I shall eagerly waiting for your next video b/c this helps me a lot and increases my interest on advanced physics and physics related to cosmology. Reply Jaydeep Dave Jaydeep Dave 2 weeks ago Greatly Explained!! You won a subscriber :) 1 Reply TTV BTW TTV BTW 1 year ago I just love these theories videos, always engaging and actively listening. its just so fascinating how some things were created or discovered. 13 Reply Mohamed kolon Mohamed kolon 3 months ago It's just amazing how they came together willfully Reply KK vHvL KK vHvL 11 months ago That 3d animation makes all the difference. The 2D model never made sense to me. Now for the first time i can visualize it. 8 Reply Lambe Bicho Lambe Bicho 1 month ago I understand pretty much everything but these equations. I feel like I'm limited to how much knowledge I can attain due to my inability to apply equations to different scenarios based on different topics due to a lack of understanding. I don't even know what those symbols mean. I like learning about this stuff and feeling smart when I put two and two together myself before the subject matter being discussed has come to its conclusion and I feel like I have a lot of potential but physics and calculus intimidates my adhd riddled brain. Reply Magnet Chiefs kingdom Magnet Chiefs kingdom 11 months ago (edited) This clip is very clear and concise!! 1 Reply Bill Smith Bill Smith 11 months ago Hello Arvin👍 I have heard many people talk about an object bending or manipulating space/time. More specifically, bringing a point of space closer therefore decreasing distance. Here's the question: If one were to observe an object doing this,..what would that look like? If a football folded the space of a football field by half, what would an observer note about that footballs travel? Would it simply appear to move rapidly, anomalously, or appear to skip? Anyone? 1 Reply Arvin Ash · 1 reply Matheus Ferreira Matheus Ferreira 2 years ago Arvin, since I was 15, I've watched countless, COUNTLESS videos on YouTube about general relativity. I'm 22 now, and still nothing comes close to matching your combination of scientific rigor and simplicity of explanation in this video. I just had an eureka moment. I have heard so many times that gravity bends space and time. But every other person that tried to explain why oversimplified it, and didn't walk me through the understanding, and many pieces were missing. I just love your content man. Please keep making explanations like these, putting us inside the heads of the geniuses and how they came up with their revolutions. You may actually be a revolutionary genius yourself lol. 6 Arvin Ash Reply Arvin Ash · 1 reply Alexander Fantaye Alexander Fantaye 6 months ago I used to think this subject is pretty tough! -And this man came and make it look like scooby do thing :) 1 Reply TERRANIMATIONS TERRANIMATIONS 1 year ago Thankyou so much! This video helped me understand the theory. 1 Reply Engin Kazanci Engin Kazanci 10 months ago Great work Sir! 1 Reply Shravani Deshpande Shravani Deshpande 9 months ago I understood theory of relativity for the first time here..... I've tried many other channels/books but here it's explained in the simplest manner! 1 Reply 4 replies Jessi Romez Jessi Romez 6 months ago (edited) Best explanation ever. YouTube please delete all the other videos on Relativity. 2 Reply Gil Ho Gil Ho 1 year ago Im just amazed at how smart Mr Ash must be to be able to explain it so simply. I have watched countless videos on this topic over several years and I finally feel like I understand 50%. 74 Reply 1 reply Allan Ults Allan Ults 11 months ago 17 and love astronomy I think I’m impressed with myself to actually understand this 1 Reply Devin Blitzer Devin Blitzer 6 months ago Special Relativity (SR) does apply in accelerating reference frames. It just doesn't take gravity into consideration Reply Toni Roberts Toni Roberts 9 months ago So I admit I’m not a mathematically gifted person or even took physics in highschool. Yet somehow I became obsessed early on with both special and general relativity even though I don’t think I’ve ever truly understood it. My father on the other hand was a mathematics genius, loved physics and studied and read a lot about it, plus he was just incredibly intelligent. I’d try to describe general relativity to him and give him the analogy of gravity basically being the same force as putting a heavy ball on a trampoline, and gravity is simply the fabric of space bending and effecting other matter bringing it in (it’s a really common analogy people give to describe gravity). It always annoyed my dad for some reason. He would say that often people try to over simply something trying to get people to understand but it’s not a really accurate description. He’s try to explain to me but I never understood his response. Sometimes I wonder if he’s over caught up in Newtonian physics. It’s just interesting. Reply Curious George Curious George 9 months ago I'm still confused, but find this stuff fascinating. Reply Joe Pangia Joe Pangia 9 months ago Really great explanation of this illusively challenging concept of theoretical cosmology. As an uneducated, average Joe with an inquisitive analytical mind I found your patient, detailed explanation of the development and meaning of the theory to be superb. Your 3D functional illustration of gravitation on space-time had my eyes bulging out of my head. It made so much more intuitive sense seeing that rather than the typical sphere resting on a graph that is usually presented. Thanks so much for posting this! 1 Reply Cultural Fix Cultural Fix 1 year ago I never leave comments but this is so comprehensive. Absolute respect and love to those who made this. I have been researching dimensional geometry for a while and am overjoyed to find a video this good. This is what youtube should have been made for. 5 Reply 1 reply Victor Barrera Victor Barrera 8 months ago This explains what’s happening in interstellar very well 1 Reply Sever Sava Sever Sava 4 months ago Are the geodesics bent towards the surface of the BH's event horizon (concave relative to the BH's surface) or outwards (convex relative to the BH's surface)? Or is something more complex than this? Reply Chackers Chackers 2 months ago Great video, Arvin: thank you! 1 Reply Nandan MS Nandan MS 7 months ago Beautifully explained Reply MARK E MARK E 1 year ago very clear explanation!!! 1 Reply Abhilash Menon Abhilash Menon 2 years ago One of the best explanations of General Relativity out there. Thank you! 4 Reply Edahn Small Edahn Small 3 months ago This was really amazing. 1 Reply Bri Stevens Bri Stevens 7 months ago (edited) Thank god he mentioned that the curvature happens in 3 dimensions, I was just thinking “wait, space isn’t a 2D plane.” I’m now wondering if the most accurate depiction would technically be a 4D plane since you should have length, width, height, and time. Reply Mary Ann the Nytowl Mary Ann the Nytowl 7 months ago Here thanks to Sabine! I'm looking over some of your more interesting looking videos, and have enjoyed what Ive seen, so far! Thanks for these videos! 🖖🏼🙂👍🏼❤️❤️ 1 Reply Mike Fuller Mike Fuller 11 months ago (edited) When I was about 18 years old I used to walk to my local library to take out the book 'The Ascent of Man' by Jacob Bronowski to read about relativity to learn to be able to build a time machine, having loved the scenes from the 1960 film 'The Time Machine' when George played by Rod Taylor travels through time. It was more daydreaming and playful fantasy than me actually believing that I was able to do it but it was nice to live in hope. 1 Reply 2 replies 801GMC 801GMC 4 months ago very complete. thank you! 1 Reply Freebie Hughes Freebie Hughes 1 year ago Awesome!!! I believe there is a young person out there who will one day figure out what Gravity is. His/her passion for Physics will have been sparked by watching your videos. Keep up the incredible work, sir! 6 Reply Gordy Thungu Gordy Thungu 7 months ago Well-explained. Now, the equations are more confusing though. Reply Samuel Antwi Samuel Antwi 9 months ago Nicely explained sir. Thank you 2 Reply Steve Zodiac Steve Zodiac 10 months ago (edited) Hey @Arvin Ash, at 11:12 if speed is constant, say 5 m/s, if distance increases in the gravitational field, (say from 10 to 15m), then time must increase (say from 2 to 3s) so that 10/2 and 15/3 to both equal 5 m/s, the constant speed. So in a gravitational field, 3 seconds pass, while only 2 seconds pass beyond the field. Thus time must pass (tick) faster, (not slower) in the gravitational field... Which is, I think, what you are saying at 11:20? I was initially confused, but then thought it must be 'a slip of the tongue' at 11:12? 🤔.. Reply shiwana 20LS080 shiwana 20LS080 9 months ago loved it ... great content 1 Reply mixerD1 mixerD1 5 months ago Like so many commenting here, I could never understand GR until watching this video...thank you brother. Reply Lone Forest Lone Forest 8 months ago Indeed most simply explained General Relativity video in youtube 1 Reply ponnapu ponnapu 1 year ago truly mesmerized by the impeccable explanation , definitely the best video i have watched till date that explains such a complicated subject in such a lucid way ,thoroughly enjoyed each and every second of the video sir 3 Reply z z 5 months ago (edited) Einstein was like a person who is addicted to a tv show and desperately wants to know what happens in the next episode until he realises that eppisode hasn´t been written, only way to figure it out is to think super hard and figure it out, and he did. Reply Sohaib ali Syed Sohaib ali Syed 2 months ago Einstein was truly a genius 2 Reply Johan Sandberg Johan Sandberg 9 months ago Great video! instant sub, thank you Arvin. 1 Reply Motorcycle Maniac Motorcycle Maniac 2 weeks ago Hi Arvind. Actually David Hilbert also knew all this and graciously gave up his claim on general relativity. He had all the field equations and was within weeks of publishing 1 Reply Arvin Ash · 1 reply WistrelChianti WistrelChianti 5 months ago Thanks! This really helped! 1 Reply Alex Wynters Alex Wynters 1 year ago This is the first time I've ever seen a 3D representation of how matter interacts with spacetime and it makes so much more sense to me now 10 Reply Jordy Lakiere Jordy Lakiere 11 months ago This is such a great video. Subscribed. 1 Reply praveen praveen 1 year ago Great explanation. I just wonder how Newton would have felt, if he were to see Einstein's theory. He is known to have expressed dissatisfaction on action at distance. I guess he would have been thrilled to see it neatly explained. 1 Reply Arvin Ash · 1 reply s s s s 5 months ago Thank you so much... You said it so beautifully.. sir 1 Reply MohammadReza Abdolian MohammadReza Abdolian 10 months ago WONDERFUL 👌🏻♥ BTW, somehow I think that I cannot connect the flashlight example to the General Relativity... Where the idea of bending light in a spaceship did come from?! And how is it even possible despite the fact that the light speed is fast enough to travel across the room without being affected? Reply 1 reply Shahid, araain Shahid, araain 11 months ago Very nice 2 Reply sheth tejas sheth tejas 2 years ago wow wow wow.... That is the simplest and at the same time most complete explanation of relativity I have EVER seen or read. I can now explain what relativity is without using mathematics, the kind of which I am anyway incapable of. Dear Mr. Arvin, you have done a fabulous job. Congratulations. I want to specially give you credit for one thing: almost all the explanations on relativity, however simple they claim to be, straightaway jump to using the conjoined term 'spacetime' without ever caring to explain, as you put it, "how come time jumps in the picture". You cared to explain the two concepts separately. Brilliant. Now I know why we use 'spacetime' while discussing relativity. So Einstein got the idea of equivalence between acceleration in space and gravity on Earth by a simple thought experiment which eventually led to his postulating that matter bends space around it. Was there a similar simple thought experiment that led him to think that light's speed must be constant in all frames of references? In the end, I understand from this video that Einstein's first step towards his revolutionary theories was freedom of thought. Can we say that? I was under the impression so far that he already must have thought about the mathematics of this theory before proposing it. But I guess he had simple ideas, had the courage to work on them and then figured out the mathematics later. Schools and Colleges, even today, tend to box the thinking of students. It is a horrible practise. If a student were to challenge the theories of Einstein, he would surely be ridiculed like how Einstein was initially. Thats horrible. 30 Arvin Ash Reply 4 replies scott chirco scott chirco 8 months ago That clears up everything. Im now officially an expert. 2 Reply Sundsrik Sundsrik 11 days ago Beautiful explanation 1 Reply AG AG 1 year ago ThankYou soo much! I understood this at last! 1 Reply curdt79 curdt79 9 months ago FUCKING AWESOME!! Best explanation I have ever heard on how time is involved. Blew my mind. Reply Marilyn Malkovich Marilyn Malkovich 3 months ago I wish this was taught in schools, man. 1 Reply Tom Sky Tom Sky 1 year ago Its amazing how a single theory proven can kick off a big bang of new idea's. kinda like a sudoku puzzle, one just needs to learn the rules of the game and find the first clue, both of wich can take a lifetime. I absolutely love your video's, theres none other i love to hear explaining things more then you! You sir, are defenitly one of my favorite professors :D. 10 Reply 1 reply Travis Lockman Travis Lockman 7 months ago One of the best videos I have ever seen. 1 Arvin Ash Reply Epistemophilos Epistemophilos 9 months ago Great video. I missed something on the speed of light. If distance in gravitation is longer, then - at constant speed - more time will be required. No mystery, no relativity needed. What am I missing? Reply L Awliet L Awliet 8 months ago This channel is so underrated. 1 Reply Vepticy Vepticy 11 months ago wooooooooooooooooooooow this was a great very informative video. Thank you for this 1 Reply Sumit Prasad Sumit Prasad 9 days ago Awesome video 👌 1 Reply Edgar Magallanes Edgar Magallanes 1 year ago This is the best explanaition of Einsten's theory I've watched so far! Thanks! 72 Reply 2 replies Bruce H. Bruce H. 9 months ago I got through this video but on most, Arvin - who's always a nice guy - has an uncanny ability to confuse me even more on the subject than I was before watching the video, Is it just me? Reply GOAT GOAT 3 months ago Newton: I discovered gravity because an apple fell Einstein: I discovered general relativity because a window washer fell 1 Reply Haley Grace Haley Grace 4 months ago Me: can’t sleep at 1am My brain: how does the universe work? 1 Reply naudia tf naudia tf 6 days ago The curvature of light due to gravity makes a lot of sense of how time must be distorted to allow a curved light and straight light achieve the same speed. Obviously time must be sped up for it for a curved path to reach the destination of a straight path because it has a longer route. This reminds me of a race on a track. The person on the outer ring gets a much closer start to the finish to compensate for the longer distance. Because if they started at the same start line the outer ring runner would have to speed up time to achieve the same time as the inner runner Reply David Musser David Musser 9 months ago In your mind you can make reality anything you want it to be. 2 Reply 1 reply Gurpreet Singh Gurpreet Singh 2 years ago Man, Einstein was just built different. 270 Reply 20 replies Robin Munro Robin Munro 1 year ago I think I may need an ice pack for my head. Great video, I could watch this stuff for hours. 1 Reply kevnar kevnar 9 months ago It's almost like somebody travelling at the speed of light would see 13.8 billion years pass in only seven days. 3 Reply 1 reply Kwazar Kwazar 7 months ago Well said. Even i understood that. 1 Reply oppamaclare oppamaclare 1 month ago So glad I just found this channel. 1 Reply Shahd Younis Shahd Younis 3 months ago THIS IS SERIOUSLY ONE OF THE BEST VIDS I'VE EVER WATCHED 1 Reply KamiKira KamiKira 1 year ago I never understood how Space and time were affected by gravity. Now it makes so much sense, it’s really astonishing. 3 Reply DrZman DrZman 6 months ago Einstein observed that when a piece of metal is heated it expands. He knew that heat caused expansion. From this, he was able to determine that because it was hotter in the summer the days were longer, and because it is colder in the winter, the days are shorter. :-0 Reply aaron Eduardo aaron Eduardo 1 year ago I actually kept up to 80% of this. Not bad for a dummy. I over achieved haha 1 Reply שגהש שגהש 9 months ago Still haven’t understood it fully but good video 2 Reply Angel C Angel C 4 months ago Yes YouTube you’re right This is educational content I needed to see on a Friday night Reply Ernesto G Ernesto G 2 months ago (edited) Something I've never understood about curved spacetime is how it's possible for an object to "defy" the curvature with sufficient acceleration. For example, if a spaceship comes within Earth's gravity, and starts to follow the natural curvature (leading it to Earth), it could still accelerate away with enough force. But if space is curved, where is the spaceship moving to when it starts to accelerate away? Reply Edinburgh Tumuran Edinburgh Tumuran 1 year ago Awesomely explained! One of the most simplified explanations of The Theory of General Relativity! 5 Reply Harsh Sen Harsh Sen 9 months ago Out of my curiosity l watched many video and learnt it nearly a year ago and l loved that. Reply Tom Cruise Tom Cruise 2 weeks ago I can understand nothing but i really respect those guys genius 🔥🔥🔥🔥 Reply Easy Understanding PHYSICS 4 U Easy Understanding PHYSICS 4 U 4 months ago Very nice explanation sir 1 Reply Daniel Torres Daniel Torres 7 months ago If the speed of light is constant, then maybe instead of looking at light as travelling through this field of matter, it might help to instead look at matter as floating within this field of light. Reply gentoomeo gentoomeo 4 months ago Excellent video! 1 Reply Naman Jain Naman Jain 2 years ago The most understandable video on relativity and space-time I have ever seen. Thanks you so much for making this. 3 Reply Christian Alvarez Christian Alvarez 3 months ago (edited) I don't get 4:57. If the flashlight is also traveling at the same speed together with the spaceship, why would its light fall behind the speed of the room slightly? It shot out of the flashlight at the same speed as the rest of the room. It's not as if parts of the room were accelerating at different speeds. This video is truly fascinating, and for the first time it clears to me what role time plays in Spacetime. Thank you for the simplicity! I still have that first question though. Reply 1 reply J J J J 2 months ago I find it so interesting that we still don't know what causes gravity. Reply Steven Graham Steven Graham 11 months ago Great Bideo… science made easy to understand 😀 1 Reply Greg M Greg M 9 months ago (edited) I always thought General Relativity was a military leader who couldn't come to a definite conclusion about anything. Reply Sir Harves Sir Harves 9 months ago Finally, I understand what I don't understand. Thank you. 1 Reply My home videos are online My home videos are online 1 year ago (edited) Wow, this is an amazing explanation. I can't believe it took me this long it understand general relativity.. no one else was able to explain it to me the way you did. Thanks 7 Reply Finoverse Finoverse 6 months ago (edited) Can we say that when a heavily mass object revaluate around space it curves but when it passes that perticular point curves starts to come back to its real position so if curving of space slows time the uncurving it would couse time to move faster? 1 Reply Zack Percell VO Zack Percell VO 11 months ago This stuff is so mind blowing. Why does it seem like nobody I know has any clue or care about this subject? Sad. 1 Reply Tanush Patiyal Tanush Patiyal 2 months ago thank you made us understand easily 1 Reply Togu Oppusunggu Togu Oppusunggu 5 months ago Thanks so much for this enlightening video. Is there a comparable one that's been made for Quantum Mechanics? I'm also intrigued by this comment made by a viewer: "I know it's incomplete and that Quantum Mechanics is a more successful theory, but GR tries to solve much greater problems and it's quite successful at it." Why does the viewer mean by saying that Quantum Mechanics is more "successful"? Does it try to explain some of the things that General Relativity tries so explain and gives a better explanation? If so, what? I'm also still trying to grasp why the two theories are considered competing. Why can't one be considered the science of the small and the other the science of the large and be complementary to each other? Reply D Talks D Talks 3 weeks ago Hi Arvin, why do the position of the star will change during the eclipse ? Is it because the light from the star at night is not affected by suns gravity ? 1 Reply Arvin Ash · 1 reply Abhishek jyotishi Abhishek jyotishi 1 year ago I don’t know how you do this but your contents are awesome. Thank you for making physics more intuitive. 3 Reply Pro You Services Ltd Pro You Services Ltd 9 months ago My understanding of this theory is well.. relative 😁😊 Reply Space Private Space Private 1 year ago That was Good! I only "got" about 10% of it, but that's what I've been saying for years . . . 90% of what I might tell you is BS, but it's that 10% ya don't wanna miss! ; ) 1 Reply sagar dakhane sagar dakhane 4 months ago First time I understood what Einstein wanted to tell 1 Reply slehar slehar 8 months ago Wow! Excellent presentation! Trivial nitpick 5💯 (5:10 min:sec) "Einstein thought it couldn't be, because it would violate the principle of equivalence" It speaks as if Einstein were dogmatically committed to that principle, instead of exploring whether or not it could be formulated, as a hypothesis, an alternative explanation of the same facts. 1 Reply Bruce Lee Bruce Lee 11 months ago 8:11 is soooo coooool I am a visual guy so this really made it for me 1 Reply Tex Loch Tex Loch 2 years ago Your videos are incredibly well done. They make me excited for my extragalactic cosmology course in the Spring. 12 Reply Arvin Ash · 1 reply Page Rhoads Page Rhoads 9 months ago When light travels far enough it decays into particles known as string and these particles will start to collect and depending on the amount of energy left in them at the point of collection is what determines the form the collection will assume either biological form non biological form or energetic form the light regenerates itself Reply Gunner Gunner 3 months ago (edited) most efficient 14 minutes of my life !!! 1 Reply Kshitiz Sanmani Kshitiz Sanmani 1 year ago i m impressed 😊 1 Reply Hd.1 Cool Hd.1 Cool 7 months ago However, im not sure that if light speed can be modified by the forces of gravity due to its incredible speed Reply mj durant mj durant 1 year ago this is well put information, all of students much watch this 1 Reply Adam Brush Adam Brush 2 years ago I've been all over YouTube looking for the best layman's explanation of spacetime and this is by far the best so far. Thanks. 8 Reply Harrison Voerman Harrison Voerman 3 months ago Thank you for your videos Arvin 1 Reply Око Вселенной Око Вселенной 3 months ago Hello. There is a new idea. In Michelson's experiment in 1881 to search for the carrier of light - ether. In the experiment, it is necessary to replace the light source with a maser. With the help of this experiment on transport, it is possible to determine its speed relative to the dominant gravitational field of the Earth. Maser - microwave amplification by stimulate demission of radiation. Matser - invented in England in 2018 Reply Evangeline guerrero Evangeline guerrero 11 months ago Mind blowing 1 Reply queerdeer12 queerdeer12 9 months ago Bro, mind blown about light traveling through a curve. Holy sh$t!! 1 Reply Hades Hades 4 months ago I think by the time I’m 30 (I’m 17 rn) this dude is gonna figure out quantum gravity Reply Rick Pontificates Rick Pontificates 1 year ago You have one of the most intelligent and well-informed shows on Youtube. Bravo to you, sir. 3 Reply Richard Jones Richard Jones 6 months ago I admire Einstein and the many discoveries attributed to him. I am curious what you think of or know about the criticisms about him? Such as SR and GR not being his work. Claims being because he worked as a patent ckerk he had access to the work of others and he just took their work as his own. 1 Reply Arvin Ash · 1 reply Bryan Seare Bryan Seare 2 months ago the core of physics is finding things that are equal to each other Reply Artur Artur 9 months ago (edited) 11:00 that is blowing my mind right now! _ If you could use that light to travel from one point to another (-: Reply Aditya Majumdar Aditya Majumdar 7 months ago You are a gem ! 1 Reply twostatescouple1 twostatescouple1 2 months ago And thank u so much for this video Please make a video on Einstein's train lightning thought experiment i didn't get that properly. Reply GudduForYou¹² GudduForYou¹² 2 years ago "Time is not absolute" Gives me chills.... 299 Reply 9 replies Juan Felipe Garzon Juan Felipe Garzon 1 year ago Thank you… I love science 1 Reply Shadhin Magnito Shadhin Magnito 6 months ago One thing about Einstein, is the inspiration that never let traditional education and degrees dictate who you want to be. If you're passionate, pursue your studies. Big universities often tend to fail in education anyways. Remember, everyone tried to discard Einstein as a patent Clark and not a real scientist. Reply Rahul Jain Rahul Jain 9 months ago Loved the video. just loved it. I mean you are just awesome. 1 Reply Mike B. Mike B. 6 months ago Greatest scientific theory of all time. Einstein asked questions no one before him ever thought to ask. 2 Reply 1 reply James Hoey James Hoey 3 months ago Thank you for this video...Bravo...... 1 Reply Roberto Buenafe Roberto Buenafe 2 years ago The 3D model for the curvature of space really helped. 24 Reply Cesar Galicia Cesar Galicia 1 year ago Good stuff love the video. 1 Reply Sobering Mind Sobering Mind 8 months ago (edited) (Gravitational acceleration "just so happens" to be the same as space shuttle acceleration into orbit.) Basically E=mc2 (multiplied times the speed of light squared..) Does this hint toward energy and matter being interchangeable, they are different forms of mass? Of thermal dynamics, the first law and second law comes to mind now. Not sure if I understand well or not....However, I have always liked rational and practical sceince studies. Reply TYD • TYD • 3 months ago Thank you so much for this video 1 Reply JkennGG JkennGG 3 months ago What if you were to take an atomic clock along the curved line and the straight one like shown at 11:30? Would one atom move faster? Wouldn’t both atoms still end up having the same amount of revolutions even though they would appear different to an outside observer? Hopefully this question makes sense, this is the number one question I have with trying to understand the linkage between space and time. It doesn’t make sense to me because an atom would have to move faster than an another one physically for it to age more no? Reply GEN - X - 三FPV三 GEN - X - 三FPV三 2 months ago @ 8:08 gives a good example of how we spiral around the Sun rather than a simple orbit because we're following the Sun in orbit around in our galaxy. 1 Reply Balázs Adorjáni Balázs Adorjáni 2 years ago That must have been one of the biggest (if not THE biggest) 'See? I told ya!' moments in the history of mankind. I even envy Eddington. That moment of realization: 'He did it. That son of a b*tch did it!' What an emotional rollercoaster it must have been! Great video, as always! Thank you, Arvin! 4 Reply tjay tjay 3 months ago wow never thought someone would explain this that easily to a cosmos enthusisat. thank you sir 1 Reply Helmut Mueller Helmut Mueller 1 month ago Excellent and really good in saying that if a model of the world fails it is the models problem - and we need a better one, instead of making a hype from the singularity of the model. Thanks a lot and I really like the kind way you present this.😁 1 Reply Paxos Massage Paxos Massage 8 months ago I finally understood the "how" , only the "why" remains Reply Dreadnaught Dreadnaught 9 months ago I'm surprised that exception to the apparently expendable attitude to the Window-Cleaner's fate has not been taken by older players of the Ukelele in general and the George Formby Appreciation Society in particular. Reply Samatha Samatha 9 months ago great explaination 1 Reply Robert Goss Robert Goss 1 year ago Dr. Ash: I love the story about Einstein nailing Mercury's precession, and later, he and Edington et al proving the starlight displacement during the 1919 eclipse. I was particularly struck by your remark that, at one point, Einstein was "...the only person in the world" who knew what he knew. That thought gave me chills! 6 Reply Chris Garcia Chris Garcia 1 month ago That was great thank you 1 Reply Tampa Max Tampa Max 5 months ago So… outside of the field of effect of time distorting bodies like planets, is there a constant time that we may go by if we ever become interplanetary species??? Or is it always affected somehow no matter how far away from a large body you get? 1 Reply Arvin Ash · 1 reply mewsic man mewsic man 7 months ago The only question i have right now is Why does time stops at the speed of light? Reply Patrick Higgins Patrick Higgins 3 months ago Thank you for your interesting videos. Regards from France. 1 Reply Arvin Ash · 1 reply Nikola Horvat - Tesla Nikola Horvat - Tesla 9 months ago I would like to see Isaac Newton's reaction video on this one.... 1 Reply Rob Puchyr Rob Puchyr 2 years ago 8:10 Best rendition of space time. After seeing so many bowling balls on rubber membranes, this video gets it right! And explains why so many membrane animations to boot. 11:05 Best explanation ever. Time has to give way in higher gravity. What a well-made video! 25 Arvin Ash Reply 1 reply scott brady scott brady 9 months ago Speed is made up of two variables distance and time, if you change one variable without changing the other you will get time dilation. If you increase distance only and not time you will get "velocity time dilation". And it you increase time only and not distance you will get "gravitational time dilation". Gravity is time. Reply Sjoerd Sjoerd 7 months ago So light takes the same time to travel from D to C as it takes to travel from B to A, right? Why is that? Has that something to do with the speed of light in different reference frames? Reply I Hate Andrey Krasnokutsky I Hate Andrey Krasnokutsky 4 months ago Good video, thanks. Reply Illuminate me Illuminate me 8 months ago (edited) Way in over my own head.. but I have so much fun writing things like this that at this point I'd just like to share some stuff with random people. I know I'm going to sound absolutely uneducated about certain things.. and I'm fine with that. I've come to the realization that the way us humans learn just gets opinionated.. and that gets in the way.. hardcore. So.. here I'll post my OWN mistakes in front of the world; or part of it, in order for somebody to help me get a better understanding of things in practicality instead of theory. We are all walking mirrors made of the same matter; only with different reflections of our environments. Expansion and Time Relation Theory: motion (time) is directly due to the expansion of the universe; and the expansion rate determines the "speed" of time. The speed of light must abide and/or "match" the speed of cosmic expansion. Expansion is what makes time up. Without time the universe would be motionless; static like a painting. Think about this.. if the universe wasn't expanding then all matter would've never changed. The universe would've had to have been instantly spawned and everything would've stayed constant. But since it was motion that caused the universe to begin with.. the universe must abide by certain laws; the universe cannot exist without motion. It expands ONE WAY. But now I want to talk about outside the universe. If the universe can expand forever then it isn't actually expanding. To us it is. Instead think about size. Size doesn't exist either. If sub-atomic matter became either smaller or larger than it is to us in real life; it'd still be the same size to the observer that discovered it; since all raw matter, including the matter that composes the viewer isn't sizeable, size only applies to compounded sub-elements within the universe that take up space inside of more space that's composed of matter.Therefore, size/space isn't real either and is relative to compounding matter itself. But the matter in it's rawest form doesn't have a certain size; it MUST be MULTIPLE sizes simultaneously? How is there a set size on something non-sizeable? Queen Atom Theory The cosmos is NOT variable in MASS, only its contents; or "weight" is variable. The universe isn't expanding.. it's "crunching", but to its internal observers, expansion is an illusion created by the "inclusion of mass" in a confined space, relative to the observer being INSIDE. Think of how atoms work, you can't create matter. Why don't we try and use atoms and their sub-components; the smallest things in the universe; to try and explain whether the "Queen Atom Theory" is real; by relating instead of dis-relating to how tiny sub-atomic elementary particles MIGHT give us the answers we need to understand how larger mass' functions are relative to the former; and how the "Queen Atom" (the universe) works. The larger the mass relative to the size of the universe.. the more similar its behaviour is to something the size of an atom or elementary sub-atomic particles; because the universe AS A WHOLE if viewed by an object that was similar in size to us in a 4 dimensional universe outside of our own, then the universe would behave and look EXACTLY like an atom.. because it is an atom. So.. does that mean that atoms are literally.. infinite? Oh dear... So essentially I'm saying atoms are exact replicas of the universe as a whole.. so there's an entire universe inside of an atom.. and this thought cycle would infinitely go on forever so that there is no "technical end" to an atom. The only thing that can be forever is God himself.. so the universe is a part of God; separate from thought creation. This is what I meant earlier.. "God particles" are not variable in size. I call them that because that's the only thing that is forever and almighty. The only thing that could possibly ever do that. Expansion and Time Relativity << Big Crunch (the universe isn't expanding, it's constantly variating it's contents. Eventually, they'll all combine into one massive element.. yes.. laugh.. due to lack of space in the cosmos. This is how the universe will end. Contradictory Statement Explanations: Time isn't relative to literally an "expansion" of some kind of "bubble" like mass; but due to being inside the cosmos. Simply put.. it's the other way around. Motion makes time. It's that simple... If the motion of matter didn't exist, how would the universe have ANY variation; besides that, how would the big bang have happened? Motion came before the universe; therefore, motion is the added element that we can't physically feel in the universe; without finding a sort of artifact to allow a deeper understanding of it. This is what allows consciousness. It's the 2x. The other component of the "glue" if you will. The universe as a whole is the "glue". The atom.. which within itself is more atoms that make up it's contents.. but not the universe itself... this behavior I can't describe through language. Someone is going to have to figure this out. Please don't be offended by anything! All of this is just an idea and has no factual meaning; nor do I intend for it to. I just wanted to share my ideas. I have no desire of prolonging negative emotions caused by a result of opinions... Please don't be afraid to write your official jargon. Perhaps a lot of these discoveries are the sub-components of the universe and not the actual structure as a whole. In other words, the bigger picture is hidden in plain sight; but technicality distracts us too much to notice it. What if the universe is like gods wife? Always changing but never different. The unmoved mover. Reply Shadow Diamond Shadow Diamond 9 months ago Great video. 1 Reply mb mb 1 year ago Hah. Now I get it. After 100s of videos over many years on time dilation I finally get it. Thank you Sir. That was a simple explanation of a complex subject. 3 Reply Aniket Kothari Aniket Kothari 11 months ago Beautifully put.. Reply Ahmed Rameez Ahmed Rameez 5 months ago General relativity and quantum mechanics can work together. This was proved by Hawkin. This is now called Hawkin’s radiation. Reply Productivity Sharma Productivity Sharma 11 days ago 11:06 enlightenment !!!! now i understood black hole better 🤯 1 Reply Abe Gamb Abe Gamb 6 months ago delcious explanation. love. you are the man. 1 Reply Mehmet Dogan Mehmet Dogan 1 year ago Arvin, can the bending of the light not be explained by the classical gravitational force considering that the photons have mass? 1 Reply Arvin Ash · 5 replies martin i martin i 2 years ago The best part of the video for me was the more accurate depiction of 3D interaction of gravity and matter. In many videos and explanations I was confused by that 2D model and why the plane was bent only the one way. Also it confused me a lot why then, or better to say how then gravity is observed the same everywhere on earth. 13 Reply 1 reply CIG Xhang CIG Xhang 4 months ago jaw dropping… space and time can be distorted 1 Reply Meditation music-Relaxation music Meditation music-Relaxation music 1 month ago Albert Einstein the man who laid the foundation for physics 1 Reply Arvin Ash · 1 reply Marten Linkrus Marten Linkrus 4 months ago I believe that in 11:00 you made a mistake. If the distance the light has to travel is bigger/longer and it moves as fast in the gravitational field as it does in empty space, then in the gravitational field the time should move faster than it is in the empty space. Reply 1 reply Igor Fujs Igor Fujs 1 year ago Brilliant! 1 Reply rishab basera rishab basera 3 days ago Freaking Legend .. 1 Reply Four - Q Four - Q 1 year ago Arvin, thank you. You have explained space-time and gravity relationship where I finally understand. You did this in more simple terms where I didn't need to be Einstein to understand it. The amazing part, I understand exactly what you described. You are a great teacher. 6 Reply Core Pure Core Pure 1 month ago so basically because they want the light speed to stay the same they have to stretch the space web longer , so objects on the web naturally move as of the gravity Reply Dave Sanchez Dave Sanchez 1 month ago I need the simplified version of this simplified version lol 1 Reply 1 reply Nihal Nihal 8 days ago can anyone explain general relativity,i am not able to understand it i am more than curious to find the concept behind it Reply Dark Zak Dark Zak 8 months ago The best way to sum up my understanding of this theory after watching this video is to watch Grug in the Croods where he feels his head is physically hurting him from having an idea Reply The most “normal” trio The most “normal” trio 3 weeks ago I'm a 13 year old girl who has figured out such mysterys about space, its so cool just to learn about the science Behind space 1 Reply JOEL CORDERO JOEL CORDERO 1 year ago Thank you for this video. I’ve been struggling with this concept for years. This is the only explanation, whether in video or book form, that simplified it to a level I could understand. Thank you so much for taking the time to create these videos. Cheers! 10 Reply 1 reply Arshh 36 Arshh 36 1 month ago Best explanation ever! 1 Reply Son of Ode Son of Ode 1 year ago The closer to the center of gravity the tempo is increased. The closer to the source of the sound, the volume of sound increased heard. Reply Selim AKAR Selim AKAR 1 month ago Really god job men Thank you !!! 1 Reply mooobymoof mooobymoof 4 months ago does gravity have effect on resonant frequency of atoms? Reply Dev Chandak Dev Chandak 11 months ago (edited) SIR , I have que that why does mass bend space-time and why in the frame of moving object time runs slowly? Reply Quahntasy - Animating Universe Quahntasy - Animating Universe 2 years ago 8:08 Finally someone showed it perfectly. You cant find better explanation than this guys. This is coming from a grad student in Physics 4 Arvin Ash Reply 4 replies David Parham David Parham 7 months ago awesome. I'm 58 . Still wanting to learn 1 Reply Arvin Ash · 1 reply PyroOfZen PyroOfZen 8 months ago (edited) One thing I never really understood about the explanation that the curvature of space time bends straight trajectories into the curved trajectories we observe is that...wouldn't that mean accelerating would just make you travel along that trajectory faster? Like, a ship in a stable orbit around Earth would be able to accelerate along their trajectory, and it would simply speed up their orbit, not change it. This of course isn't the case. If it was, wouldn't you specifically need to accelerate perpendicular to your trajectory in order to change your orbital path? Reply Jonnie Caraballo Jonnie Caraballo 7 days ago This is the story is very true cause no average man can actually figure this out. Reply Gordon Cavanaugh Gordon Cavanaugh 9 months ago What I have never understood about the example of time space is that it is only on one plane. Wouldn't the warping of space be on infinite planes. And if that is so, then there would be no deformation of space to cause gravity. Reply Dammy Emmanuel Dammy Emmanuel 3 months ago (edited) Does this explain why tensioned wires are sagged? 1 Reply Duane Winkler Duane Winkler 1 year ago One the cleanest explanations I’ve ever heard. Nice job 3 Reply Harry Mills Harry Mills 8 months ago (edited) 9:59 I think you got your actual and observed backwards in the illustration. Nope. You got it right. Interesting thoughts. While the light is being deflected towards the Sun, it appears that it's coming from farther away from the Sun, because of the angle it's coming to the observer from. So a star could be behind the Sun, but rays traveling close to the Sun that would otherwise miss us, entirely, are bent towards the Sun, making it appear as if a star is to the "right" of the Sun, instead of behind it. Reply Schlock Meister Schlock Meister 7 months ago (edited) Wow, just a totally amazing video. You Sir should have a forum. I have so, oh so many questions and observations. Sorry but I can't refrain from mentioning some of them right here. 1 - I have a comic series which states that everything that goes into a black hole in Universe #1, gets spit out as light, heat & energy in Universe #2 in the form of a sun. 2 - A personal observation: imho, time is just the passage of an object from one state to another. 3 - a follow-up to #2: the notion that time didn't exist before the Big Bang seems ridiculous to me, since time is exactly what is needed for something to go from not existing, to actually existing. It's impossible for no time to have passed between these 2 states. 3 - Lastly: what distance would be agreed upon for scientists to say: "You're not seeing that object in real-time any more, but only how it was xxx nanoseconds ago."? Obvious example being the moon, but what with objects you see with your binoculars that are 1 mile/km away? Liked, subbed and belled. 👍👍 PS: I'm "only" armchair, but armchairs good. 🙃 1 Reply Arvin Ash · 2 replies YouTube ok YouTube ok 3 days ago We can think Light bends in the room that is in the rocket is due to the refraction . Due to the medium .. And stars appeared apparently is also due to refraction.. 1 Reply Ganapathy Subramanian Ganapathy Subramanian 3 months ago This proves one thing for me. Time travel is one way path in a sense, we can move to future but not to past, theoretically... Reply JOEL A.K JOEL A.K 6 months ago Now, NOW I understand!! 2 Reply Manu Agrawal Manu Agrawal 1 year ago Wow!! After having watched so much stuff on general relativity, it finally made sense through this video. The order of thinking really helped! Great stuff man! 5 Reply Mike Morris Mike Morris 5 months ago There's understanding this, but I want to know why science does what it does, and that's a much deeper explanation. Reply jmbbao jmbbao 4 months ago (edited) Cancelar la gravedad: Sólo tienen que encontrar la frecuencia del flujo electromagnético y generar otro concordante pero opuesto, para cancelar. Un principio de interferencia destructiva. Bastante sencillo, de hecho. Reply lakshya patel lakshya patel 1 year ago this is the best vdo on gr i have ever watched..thanks 2 Reply twostatescouple1 twostatescouple1 2 months ago If two light beams fire at same time and same place in same direction how will they move relative to each other?? Reply pilot_bruh57 pilot_bruh57 7 months ago I'm just here because the curves looks so satisfying Reply A-dutch-Z A-dutch-Z 2 years ago This is one of the best descriptions of time. And I watched so many videos about it. 11 Reply 1 reply Yaofu Zhou Yaofu Zhou 4 months ago (edited) On the ending note, hope ER = EPR works out! Reply WEIRDZ WORLD WEIRDZ WORLD 5 months ago I agree with kirom.😀I got lost when the window washer fell off the ladder.😀 Reply Dr Larken Dr Larken 5 months ago I’ve been a subscriber to the channel for sometime how is it I’m just now seeing this video! Reply Jean Corriveau Jean Corriveau 5 months ago (edited) Could it be that precession occurs for all planets' orbit? Just that Mercury, being so close to the sun, the spacetime curvature is powerful to the point of affecting Mercury's elliptic orbit noticeably. Reply Idea Spark Idea Spark 8 months ago And here I can't imagine a small puzzle of 4 lines for banking exams 🙄 Reply Chairman Jao Bai Den Chairman Jao Bai Den 2 years ago (edited) 8:08 that 3D spacetime animation is AWESOME! I've always tried to imagine what the 2D "trampoline" depiction would look like IRL, and I was right on the money! 36 Reply 2 replies kanat balkeshev kanat balkeshev 6 months ago A simple way to imagine the curvature of space: Let's take a nail (this will be the core of the planet) and a wooden board (this will be the stretched fabric of space) - drive the nail into the board, the nail with a sharp end will expand the void and the board will press on the nail from all sides, that's the curvature of space Reply Varun Antony Varun Antony 5 months ago I still don’t understand how time got slower during the curved space. Does that mean it took more time for light to reach point D? Reply 1 reply Toby White Toby White 2 months ago I saw a window washer outside my office last week and had these same exact thoughts afterward. 1 Reply Hh Bb Hh Bb 1 year ago I wish I were smart enough to understand this but I love watching. The worlds greatest thinkers are amazing. Thank God or the Universe for them? Reply MS MS 6 months ago (edited) Quantum Gravity..sounds simple enough..🫠😵‍💫😓 Reply Some Guy Some Guy 1 year ago Thank you lots. It's really important to realize what simple thought experiments trigger puzzling physics like general relativity. 3 Reply Pankaj Khare Pankaj Khare 7 months ago I always use to confuse, why everyone explain space time in a 2-dimensional plane when it should be a 3-dimension structure. Thanks for clearing that confusion. Next please do explain What is time? 1 Reply Arvin Ash · 1 reply Sammy St. Croix Sammy St. Croix 2 months ago Videos for people who are already geniuses... Your video & delivery are great. However, I feel stupider now than I did before I watched it. My question is: What difference does any of it make? Buttered side always lands face down. If you let go of something it falls to the ground. Gravity. I can accept that as is & move on with my life. I'm not compelled to understand incomplete sciences that leave more questions than answers. Reply Baraquiel L. Baraquiel L. 7 months ago This is my first impression about this video, well i am only 14 yrs old and doesn't really know that much about those, but i am very interested in this, well if what you said about how black wholes has... That two infinite thingy, and was supported with equations where i found hard to understand, but doesn't matter because its a NO, well if what you said was true about how space speed time and distance i found it a big out/confusing to understand but if what Einstein said was right about it, then... I cannot say that you said was wrong, simply he already got it and was supported with explanations which to be specific, was correct. The problem is that like i said if or he/Einstein really is correct, it wouldn't be hard for him to know what exactly is gravity, saying that speed is equal to distance over time, but because of the curvy curve, it would be double, same thing happens with_in a straight line. Going back to the black whole, well i think it is not right to say that, well what the equation's matter with the black whole is wrong, it has no worth anymore, but if you look at it in a different way, you may find a way to solving it, it is really hard but if the black whole has that infinite thingy, well, where even light can't get out, it/the black whole has a huge gravitational force/pulling it/light into it/black whole, i believe you look at it something interesting, i want to say that light is just a LIGHT and a black whole has a big/huge gravitational pull making it black, where humans actually say that even light cannot get out, it is not the light that can get out, light is just a LIGHT, it travels in the space more than a hundred millions of miles per second, and like i said, it is just a LIGHT it has no gravitational force, it just travels (please do use common sense on what i say, it's hard to explain), and i myself want to know what i need to see, explaining this is hard for me, so here's something, well you know I'm only 14 but something has been bothering me about gravitational force of a black whole has something to do with it's color, where even light can be seen sorounding it and almost if you look at it it's like bum around it, but applying what Einstein said, it's hard to determine if you are looking at it in a curvy curve thing, has also connection to why the hell they can't say what and how to explain atoms, black wholes are harder to understand but basic_basically easy to determine, given the gravitational force acting in the Black whole and the light as a test subject it may take times but not hard to understand, equations are making it hard to understand, looking at it in a different way can help, if the same thing happens outside earth where time is different why and how come things outside earth is still there, it has something to do with the light and the time, please do understand what i say, there is still hope, if something is on something with a infinite something, you cannot tell the distance explaining that the universe is expanding, the start of existence of this universe is, was made by someone who has something beyond something has, in shapes where you can vision how gravity and light interact. I cannot say any more words, i must save them to make things different to be seen, giving myself hope as hard as how i try to avoid looking at death. A sincere apologies to how i say things, and again please do understand me. Reply Parag Tokekar Parag Tokekar 9 months ago 🙏🙏🙏👏👏👌 A new way to visualize General Relativity ScienceClic English 387K subscribers Subscribe 107K Share 2,185,734 views Sep 3, 2020 Relativity How to faithfully represent general relativity ? Is the image of the rubber sheet accurate ? What is the curvature of time ? All these answers in 11 minutes ! For more videos, subscribe to the YouTube channel : https://www.youtube.com/ScienceClicEN And if you liked this video, you can share it on social networks ! To support me on Patreon : http://www.patreon.com/ScienceClic or on Tipeee : http://tipeee.com/ScienceClic Facebook Page : http://facebook.com/ScienceClic Twitter : http://twitter.com/ScienceClic Instagram : http://instagram.com/ScienceClic Alessandro Roussel, For more info: http://www.alessandroroussel.com/en _ To learn more : https://en.wikipedia.org/wiki/General... Chapters View all Featured playlist 17 videos Relativity ScienceClic English 9,159 Comments rongmaw lin Add a comment... ScienceClic English Pinned by ScienceClic English ScienceClic English 2 years ago (edited) ¡Este vídeo ya está disponible en español! https://www.youtube.com/watch?v=TIzatX7i6-Q Some answers to the questions I have been asked: - Has this visualization not already been presented? No I don't think so : you may have already seen a visualization with a distorted 3D grid (like at 5:20), but the crucial point that distinguishes my new representation is its temporal dimension. It is the fact that the grid is perpetually contracting which allows us to better understand the way bodies fall (and which is more faithful to the equations). As far as I am aware this has never been represented in this way, surely because this is only possible with the video format. - If space contracts, shouldn't there be an accumulation of space in the center? Beware no, it is not space which contracts : it is only the straight lines (geodesics) which get closer to each other due to the curvature of spacetime. In the same way that on the sphere the geometry does not change (see at 9:10) , the geometry of space-time is static, it does not vary. But this geometry gives a tendency for straight lines to come closer to the center - How to define a temporal speed? In relativity there are two different times: the time of the observer (the coordinate time / the time dimension), and the time of the object (proper time). Velocity in relativity is the derivative of the coordinates with respect to the proper time of the object. The "temporal speed" is therefore simply given by the rate at which the time of the observer passes compared to the proper time of the object. To find out more, check out my series about the Maths of General Relativity 805 Reply ScienceClic English · 243 replies andrew gonzalez andrew gonzalez 1 year ago Can we take a moment to appreciate that Einstein was able to picture this in his head without the 3D models. That's the part that blows my mind! 3.6K Reply 188 replies Ryan Ryan 8 months ago I've been trying to find an explanation like this for years. The usual demonstrations in school using 3D distortions of a 2D plane never sat right with me. Thank you for this! 557 Reply 8 replies inverse_of_zero inverse_of_zero 7 months ago (edited) A$5.00 Finally, the best visualisation of spacetime curvature due to mass-energy density on the Internet. I wish I had the benefit of seeing and understanding this when I was a student. Thank you! I have saved this video, and I will share it with my students should the need arise :) 206 Reply 3 replies JEM_777 JEM_777 11 months ago (edited) I can't say thank you enough for making this video. For decades I have struggled to try to visualize a way to reconcile gravity, time, and space and you have helped me make a breakthrough. I'm so grateful for your intellect and willingness to teach and share! 76 Reply 5 replies Majora Majora 11 months ago The short version: you blew my mind The long version: When time was invoked and the temporal speed was being explained with the sliced views, I legitimately felt a pang inside my head. Like a phantom adrenaline rush solely from brain activity. This felt like receiving eldritch knowledge (the kind that would supernaturally drive humans mad if not kill outright) at 1/10,000 the potency. I felt a rush of understanding for a few seconds but then lost it trying to process it. Like a car failing to start but still making the noise of attempt. 101 Reply 11 replies yoitsjust yoitsjust 8 months ago I have not felt this way since childhood but you genuinely blew my mind at 7:18 with that intuitive explanation 11 Reply Spark Voodoo Spark Voodoo 2 years ago The best visualization of something that can't be visualized I ever seen.. Great job. 5.8K Reply ScienceClic English · 98 replies Rob DP Rob DP 10 months ago (edited) I just want to say, that I think you are making a really important contribution to science and peoples understanding of it. I studied physics 20 years ago before moving my career into other directions, but I never lost my passion for it. Your videos provide me the spark that I - and I’m sure many others - first felt as younger people when encountering these fascination topics. Thank you for inspiring the next generation. I will be showing my kids these videos when they get older. 11 Reply newrev9er newrev9er 11 months ago This is absolutely incredible instruction! I wish that you could teach teachers around the world. The whole species would benefit. You are an instructor like none other. 53 Reply 2 replies Eric Crook Eric Crook 8 months ago (edited) This is hands down the best explanation of gravity and everyone should see this!! All of the previous models never made sense and cause me to have more questions than to actually understand how any of this worked.. Now I do and I do clearly. this should replace all other animations or representations shown today. Thank you for finally making this model. I cannot believe we ever tried the marbles on a sheet example now that I see this.. How in the world did it take so long for anyone to make this version. This is crystal clear and perfectly explains gravity and answers all questions and doubt created by previous illustrations. Thank you for this!! 12 Reply Tariq Mehmood Tariq Mehmood 2 months ago what an impeccable visualization!! truly mind boggling phenomenon demonstrated with a beautiful combination of animation and music 👍 2 Reply Concavenator Concavenator 2 months ago What a fantastic explanation! I had given up on ever understanding how this spacetime curvature was supposed to work, and here it is! Many thanks! 2 Reply manonthedollar manonthedollar 2 years ago 03:27 "It is not acceptable to describe gravity inside space time, using gravity outside spacetime." THANK YOU. YES. This has annoyed me to no end. 2.1K Reply 75 replies Holy Materia Holy Materia 8 months ago I always thought I had a good handle on relativity, but I feel like I understand it in a whole new light now. Thanks for this. The visuals on all these videos are so amazing and helpful! 5 Reply Rocco Vergoglini Rocco Vergoglini 6 months ago Finally. A truly 3- and 4-dimensional description of gravity and General Relativity. I, too, have always felt that those "rubber sheet" descriptions were not telling us the whole story. This is an excellent video, and I am saving it to my favorites. Very well done! 2 Reply Dharna sahu Dharna sahu 9 months ago (edited) I'm sorry, I just kinda stalked you a lil bit (visiting your website, taking a look at your CV, knowing your educational qualifications etc) you're so young, and yet you have so much profound understanding of relatively difficult concepts, YOU ARE DEFINITELY A GENIUS!! My best wishes to you man!!! 🙌🙌🙌 11 Reply Mikko Rantalainen Mikko Rantalainen 2 months ago Using the longitude of a rotating sphere to explain how spacetime can be continuously contracting was very clever! That's the hardest part even for these animations because you have to repeatedly draw new gridlines out of nothing around 10:00 to visualize this with lines. 2 Reply NM NM 8 months ago I always had problem with the ball on a rubber sheet analogy to explain Gravity, simply for the same reason "using Gravity to explain Gravity". Also knew that only by understanding the Math behind the theory that one can have a better & proper understanding of the theory. Appreciate you much for explaining it the Math way & listing the drawbacks with the ball-sheet analogy & the corrections to that illustration. It makes better sense to me now & looking forward to apprise myself with the proper Math of the theory. Subbed!! 1 Reply Andrew's Campfire Andrew's Campfire 1 year ago The animations are superb! This is definitive proof that well-made visualizations are really good at facilitating the transfer of knowledge. Congrats! 260 Reply D D D D 4 months ago nice! you could additionally visualize the speed limit (c) using colors. I use visible spectrum for this. For example longest visible wavelength as the speed of light. This way it is easier to visualize movements around black holes. Reply Torch_k Torch_k 5 months ago I absolutely love this representation of gravity!! The common model always felt weird but I just assumed it was the best way for four dimensions to be shown to a creature that can only see in three spatial dimensions. Reply Kevin Sosaya Kevin Sosaya 3 months ago This is WAY too beautiful. Thank you for simplifying the great design of the Universe for all of us :) Reply ༺G᭄Iͥ༒cͣHͫ༻ ༺G᭄Iͥ༒cͣHͫ༻ 8 months ago Wow, I've never been satisfied with the elastic sheet analogy. Always wished for a representation just like this, thank you 4 Reply Wolfi Drachenberg Wolfi Drachenberg 1 year ago This explanation is not only so much better than the one I was taught, but it's also so much cooler to look at! Reply Spencer Gehring Spencer Gehring 2 years ago Dude. Ditto everyone else. This is a masterpiece. I've been trying to understand gravity intuitively for as long as I was start enough to try. Many other videos got close. Yours sealed the deal. Keep doing what you are doing. You're a genius. 409 Reply 17 replies igotchuoncamera igotchuoncamera 3 weeks ago My dad used to explain things like this all the time, so I had always imagined a web much like you've described here. But I never considered the bend of space time in the way we're falling in a straight line. Now when people say "We're falling through space time" I can understand what they mean. Thank you, you've made my day. Reply Natalia S Natalia S 8 months ago Thanks. That visualisation is definitely on of the best I’ve seen 🙏 Reply Just Mark Just Mark 1 year ago Great video, nice way of explaining things in a very clear and understandable manner. 2 Reply Zch73 Zch73 7 months ago Wish this mind blowing lecture lasts a whole day; just can't get enough of it. The background music gives an upbeat rythm of hunger for more. You're a genius of our time. Firstly, how you're able to apprehend the dynamics of such difficult theory. Secondly, how you proved the shortfalls of other findings. Finally, how you managed to create a video illustration out of it in which even the simple mind could understand. High school tutors should have these intuitive & technical abilities. Imagine hundreds of millions of former & current high school physics students & tutors alike out there with wrong perceptions & understandings of all these. And they will continue to replicate these wrong understandings for as long as time, space & matter exist, continuing with their respective motions. 3 Reply Vladimir Kolovrat Vladimir Kolovrat 7 months ago Nice video. You have verbalized precisely the conceptual problems I had when books presented this analogy of spacetime distortion! Reply SuperNovaJinckUFO SuperNovaJinckUFO 1 year ago You know, I feel as though my understanding of relativity has been hampered by the "balls on a sheet" representation. I've been learning about relativity since I was basically a kid, and was eventually able to gather a decent understanding of the math behind it, but the warping of spacetime never made intuitive sense to be because through the entire process everyone was saying to imagine it like balls on a sheet (even legitimate academic textbooks). But finally after seeing this, I get what the math has been trying to tell me all this time. It's so simple and elegant. It's a travesty that relativity isn't taught this way. 470 Reply 26 replies Siddharth Joshi Siddharth Joshi 11 months ago This video is incredible ! You have cleared my imagination about space and time. Amazing work 🙌 Really appreciate that. 1 Reply G R G R 4 months ago Very well done. I suddenly have a much better understanding of why the Three Body Problem is so challenging! Reply ( O_〉O)? ( O_〉O)? 10 months ago (edited) I always knew there was a problem with the 2D sheet representation. Ever since I was a kid watching space documentaries, I literally pictured the the fabric of spacetime in 3 dimensions of space like you just did. 7 Reply Soumick Soumick 1 month ago Personally, i always imagined the curvature of spacetime as something similar but a little bit different in the details I too always found the same issues with the ball and sheet model as you did. So i thought of another model myself I imagined spacetime fabric as a sort of jelly. However, on the presence of anything with a mass the 'density' of this 'jelly' becomes less, while outside the body, the 'low density' caused by body blends in with the 'higher density' of normal spacetime. The area where the 'density' is changed due to the mass of body is the gravitational field, while this density change is the gravity An object has to exert more energy to travel from a low density to high density, while when travelling in a straight line, an object would naturally attempt to move from high density to low density, similar to how you described I know it will probably be wrong if you applied the maths of general relativity, but it makes more intuitive sense to me Reply Mario Barbatti Mario Barbatti 4 months ago Great contribution! It actually improves a lot on the standard rubber sheet picture. I'm not a specialist on relativity, but your dynamic representation looked like a representation of David Finkelstein's reference frame. Is that true? 1 Reply Matthew Martin Matthew Martin 2 years ago Finally someone has created a visual that describes ‘spacetime’ curvature and movement that makes sense. 🙏 605 Reply 24 replies Aditya Mundhra Aditya Mundhra 7 months ago This deserves much more virality! Kudos... for the hard work on the visualization. Reply Riccardo Riccardo 5 months ago Wow You managed to explain a very hard concept with ease and completely. Those animation help immensely. Congratulations and thank you. Reply D H D H 1 year ago This is so cool to see give this channel $1m dollars. I honestly think good visualizations like this help people who could be future physicists actually understand at some level what's happening and have a good starting point compared to rubbersheet model Reply OwO OwO 7 months ago This is an amazing video. Other people tried to explain this, from Veratusiam, and more, yet this video elegantly explains this concept far better than anyone else Reply Matthew Alexander Hare Matthew Alexander Hare 1 year ago This is absolutely brilliant. God, how many years I've been thinking about such animation. Thanks tons!! 2 Reply DuckMySquee DuckMySquee 2 years ago Great way to touch on Special Relativity too - "c" is not the speed of light, but instead is the "c"onversion factor between meters and seconds. One thing I always liked to demonstrate the 4-dimensionality of spacetime is a thought experiment: If you describe the motion of an apple with a 3-dimensional vector (up/down, left/right and forward/back), then when it's at relative rest, the direction of that vector is undefined. Stopping an object shouldn't break the math behind physics, nor should it leave us with a hidden direction variable - so something else has to be going on. Adding a fourth dimension means that when at rest in 3-space, the object is at maximum speed in the fourth dimension - time. Speeding up in one of the other 3 space dimensions necessarily means slowing down in the time direction, and you no longer need to use the magnitude of the vector to describe speed, it can be used for energy instead - plus the orthogonal space directions to the object's own time direction are no longer tied to the observer's space directions, so even time rate and dimensional length can change with the object's relative speed - therefore you get all the effects of Special Relativity for free. 372 Reply ScienceClic English · 39 replies pablo sanchez pablo sanchez 9 months ago Hola Amigo, realmente agradezco como explicaste todo, tu relato es muy coherente y por alguna razón, sin yo ser experto, me imaginaba algo de lo que dices, mi único conflicto era el tiempo, pero tu lo explicaste de manera muy ingeniosa y clara. Muchas Gracias! Reply Renato Carvalho Renato Carvalho 5 months ago Brilliantly explained! Well done! Thank you for taking the time and effort to make this great video :) Reply Deprived Drifter Deprived Drifter 11 days ago This had to be one of the best explanations on relativity so far! Beautiful! Reply Adash Beats Adash Beats 3 months ago I finally found a video that answered my question on this question. I doubted the classic representation with spheres and elastic fabric from the first time I saw it. Excellent video. Reply Thaleios Thaleios 10 months ago That was amazing! I loved how you visualize this concept. 1 Reply p𝗦paces p𝗦paces 2 years ago Message for those watching this video at the end of January 2021. I highly recommend you to watch the videos related to “The maths of general relativity”. Believe me, despite being totally ignorant in mathematics, I was able to “visualize” the effects of space-time curvature much more clearly !! This channel deserves an Oscar !! 315 ScienceClic English Reply 6 replies Emergent Form Emergent Form 2 months ago Fantastic vid, the animation, narration, writing, it's all just top notch! Reply txmxer txmxer 4 months ago Fantastic! I agree with so many of the comments—I struggled to understand this concept, but you addressed the time aspect that was so confusing. Reply Burak Can Akıncı Burak Can Akıncı 8 months ago This is incredible. It added so many perspectives how I can visualize the space and try to explain it. Awesome! Reply Game-changer Game-changer 5 months ago Absolutely amazing, finally really understand it if I can say that Watched it 3 times just to impress myself again and again with how good explanation really is, great job!! Reply damian medina damian medina 2 months ago Of thousands of videos and text books made, this is the greatest in explaining gravity phenomena, simple complex understandable and in a short time, you guys deserve an award in vísual science & education if such existed. Reply Tsvetelin Stoyanov Tsvetelin Stoyanov 1 year ago Don't stop making animation like this, youtube education is more than everything... Well done! 113 Reply 4 replies Joaquin Paredes Joaquin Paredes 7 months ago I appreciate this video, I've been thinking about this for years (Im not a physicist, but i get the concept) and every single representation is as stated approximations. So thank you for putting this video this together. Reply Dave Boyer Dave Boyer 1 month ago This is incredible visualization! Thank you. Reply Larry Merkle Larry Merkle 1 year ago Thank you Thank you.....for creating and posting this easy to grasp visual presentation. I've never been able to understand the 'balls on a sheet' concept. And for the first time, by showing that clocks at different points also bend, I've had an understanding of this concept of time. Both your verbal and graphic presentations are so simple and easy to understand. I hope you are a teacher. If you are, your students are very fortunate to have you. Reply Gabi. Gabi. 8 months ago THANK YOU! This makes so much more sense as a visual representation of general relativity. Trying to understand what the theory says while having that "spheres on a sheet" visual makes it so hard to make sense of some things, this visual is far more intuitive. For instance, with this representation it becomes immediately clear why the surface of the Earth is accelarating upwards, which is so hard to visualize with the other analogy. I'm so glad I came across this video. Reply Kartikey Baghel Kartikey Baghel 1 year ago This is really amazing. Thanks for this wonderful visualization. Reply Leo T Leo T 2 years ago (edited) The way you start out with a simple model and visualization, and then build on it bit-by-bit to make it more and more accurate and detailed is really elucidating. 39 Reply 1 reply Trent Landwehr Trent Landwehr 5 months ago This is how I have been trying to explain spacetime to others since I was a kid. Funny enough no one could understand what I felt was pretty straightforward. Reply Mike Q Mike Q 1 month ago (edited) The best representation! The next question is how do you represent closed or open space time? There’s a lot of 2D representation of open, closed, flat universes using the saddle, sphere, and flat sheet analogies. How does that translate in 3D? 1 Reply Sertaç Aktan Sertaç Aktan 1 year ago That was the best visualisation ever. I thought I understood until I saw your step by step explanation. Thank you. 2 Reply vijayalakshmi v vijayalakshmi v 11 months ago Excellent animation. I was looking for this kind of visualisation. Can you try to do gravitational waves formed by mergers in the same way. 5 Reply Esco Obong Esco Obong 1 year ago (edited) Best visual representation of time! Showing how the visible dimensions are affected by movement in the invisible dimensions makes a lot of sense. Reply John Walker John Walker 2 years ago The best graphical explanation of relativity I've seen. Simple and intuitive. 90 Reply Ruben Victor Ruben Victor 2 months ago This looks fantastic... I love when science and motion graphics come together... Its the only way everyone understands things and get on the same page Reply Luis Ostasuc Luis Ostasuc 8 months ago Thank you! I think that growing up with many more 3d representations and video games with 3d models made me kind of frustrated with the 2d model of space time, because it never addressed how gravity works in spherical objects. Like, the gravity cones from inside the object and that's how we get the notion of down, which is inside and meets at one point. The 2d model externalizes it, which the speaker mentioned. This helps a bunch! Reply Roberto M. C. Chavarria Roberto M. C. Chavarria 4 months ago (edited) Wow, an amazing visualization of something that's difficult as hell to visualize. Congrats and thanks ! Reply Abe Tuaone Abe Tuaone 4 months ago Thank you for this explanation. It satisfies questions I've always had about the 2d models taught in high school and Jr high. Reply Arpit Yadav Arpit Yadav 6 months ago This is the best on you tube explaining Einstein's gravity. I can guarantee that. As a newly 10th passed student, only this video gave me the exact idea of what Einstein's theory of gravity exactly says. I watched several videos and spent 2 hours behind this topic and at last this this was the only video that can explain it so efficiently. Awwsm for students. Love from India. ♥️ Thank u. 😊 Reply Dormouse Dormouse 1 year ago High five to everybody who ended up here thinking the marble on a rubber sheet explanation just didn't quite cut it ✋ And great video. Glad to see it's how I imagined it to be :) 227 Reply 10 replies Mohan Ganesh Mohan Ganesh 1 month ago Simple awesome explanation and visualization 👌 I never see this kind of explanation before and This explanation changed my way of thinking, Thank you. 1 Reply Perplexer1 Perplexer1 4 months ago 7:15 I love how he speaks slowly and leaves a few seconds of silence at the end for the words to sink in. Just perfect. Reply Phyl -S Phyl -S 4 months ago wow, thats an amazong video. I was already familiar with the concept of orbits and gravity being straight paths in curved spacetime, but the end still flashed me. It really showed me a whole new layer of the underlying beauty in physics. Its things like that, which keep me motivated to study harder, cause the reward is always so elegant and fascinating Reply Zing Zang Zing Zang 4 months ago (edited) OH MY GOD. There is an actually video representation of how I always imagined relativity!!! And It’s almost exactly how it looks in my mind. This is so nice! 1 Reply Miles Greene Miles Greene 8 months ago Thank you for putting this together. Very helpful! Reply Massi Max Massi Max 2 years ago 117 dislikes are by flat space-timers 2.7K Reply 108 replies Ryan Pugh Ryan Pugh 3 months ago Thank you! I’ve always wondered why the “apple” would begin to fall when there was no force initially applied to cause its motion towards the earth. Temporal velocity converting to spatial velocity is brilliant. Finally answered my question Reply JuZZyVić JuZZyVić 10 months ago I love this video so much..🙌🏽🙌🏽 It answers everything I began to ask myself after seeing previous visualizations and explanations✊🏽 tysm Reply Stuart Kusta Stuart Kusta 1 year ago Great video, thanks for taking the time and effort to make it. 1 Reply Musicadamata Musicadamata 5 months ago As I see good videos like this one, I feel that I am in a geodesics that conducts me to understand the General Theory of Relativity, but this geodesics is full of attriction and the my speed is relatively low as compared to physicists and other people. But what I really have learned along this effort is that Eistein's genius is much greater than I have supposed when I first learn that he was a genius. 😊 Reply Nathanael Hahn Nathanael Hahn 1 year ago You've opened my mind to this! For so long I never quite grasped the concept of general relativity because of the shortcomings of the sheet illustration. Reply Rineesh Parai Rineesh Parai 1 year ago That temporal part visualisation was fantastic. Never thought of it that way. 161 Reply 8 replies Mr. DNA Mr. DNA 5 months ago I have literally been imagining general relativity this way all the time. Nice to see an animation of that. Reply Petra Jaros Petra Jaros 1 month ago This is incredible. Thank you! I've always hated the rubber sheet model for exactly these reasons, and this makes so much more sense to me. One thing I still don't understand, though: the spacetime is curved by the presence of mass, but the path of the mass is determined by the curvature of the spacetime. How can that be? They seem to be defined circularly. Is it accurate to think of each time-slice of spacetime as being "generated" by the world state within the time-slice before it (which is how we generally think of cause and effect from within our human perspective), or is there some way to understand the whole spacetime without generating "frames" one at a time? Or am I asking a question without a meaningful distinction? Reply softyzz69 softyzz69 4 months ago That's a very concise animation I like it, makes me understand the way gravity works on the fabric of space much better. Reply Jean Fradet Jean Fradet 2 months ago I'm with you. This has always been the piece that helps me understand it. I think of it as riding a wave due to the earth moving through spacetime. It's the movement + curvature that pulls an object in. Reply Oron Zachar Oron Zachar 9 months ago I have a PhD in physics (not general relativity), and this video greatly helped my understanding. Thank you! 8 Reply Omar Vlad Omar Vlad 1 year ago I’ve literally always imagined that space time looks like a warped 3D grid in motion but I’ve never seen someone so accurately depict it thank you!! 190 Reply 6 replies Multi Mason Multi Mason 8 months ago This is absolutely fantastic! You really should win some major award for this. You’ve addressed all the major issues I’ve always had with the typical visualizations and demonstrations we’ve always been shown. There typical 2D fabric of spacetime that is commonly shown has always bugged me. As if it’s that difficult to visualize a 3D grid… Yes there are a few 3D visualizations about but they are uncommon until fairly recently difficult to find at all. The 2D fabric depiction bothered me that much more because it’s actually many to be modeling 4D, and while a 3D grid would be an improvement, it would still lack the dimension of time. You’ve handled the time dimension very well here. Your initial onion skin depiction of time with 2D space is quite good to begin with, as an explanatory stepping stone towards your final visualizations which works in video format, or as a static version suitable for print. Not only have you included the time dimension, and all three spatial dimensions, but you’ve also done an excellent job of demonstrating intuitively how the deformation in the time dimension can cause what seems a stationary object in time, to apparently fall, due to its curved path through time. That is a tricky thing to demonstrate in an intuitive fashion, and you’ve managed that exceptionally well. Finally, what has always bothered me most of all about the common depiction, is the apparently circular logic of objects appearing to have a sort of weight that caused the deformation of spacetime, which is then supposed to be the cause of objects having what we call, weight. Yeah the objects creating depressions on a stretched sheet seems to suggest that something which looks exactly like gravity, is the cause of gravity, which of course is ridiculous, and seems to be doing little more than introducing a superfluous layer of abstraction to obfuscate the problem. Your version goes a long ways towards addressing that seemingly circular logic which appears in the typical visualizations. That said, there is yet a troubling element to the model. The problem isn’t in the way you’ve presented it though. It is a critical unanswered question. Why do objects cause spacetime to deform? I’m not sure that is the best way to formulate the question… Why does space time bunch up around matter? Reply Marion Makarewicz Marion Makarewicz 10 months ago Wow.. I have been trying to find a visualization like this for years. It is so good. 2 Reply Johan Paleovrachas Johan Paleovrachas 10 months ago (edited) Great video. Always wondered why no one questions the sheet illustration, it's missing a dimension.. Thank you, made my day! 1 Reply Paul Keenan Paul Keenan 5 months ago This is a marvellous representation of how gravity is perceived to work Much appreciation for this example Reply energetic0oak32 energetic0oak32 1 month ago This is genius. By far the best representation i've seen Reply Dan Unpronounceable Dan Unpronounceable 1 year ago Students need to see this when learning about gravity. Incredible how it makes so much sense with this context 140 Reply 9 replies handsupbud handsupbud 8 months ago This video is hands down the best representation of what gravity is and how it affects everything but yet imparts that information in a way that makes it easy to visualize without having to use math to do it. Reply Sleman Gerdy Sleman Gerdy 3 months ago I needed this video so much, what a piece of observation, thank you! Reply sushant bahadure sushant bahadure 1 year ago This is the best representation i have ever seen... I always had issues with rubber sheet representation... Thank you for making this video Reply Sandro Mello Sandro Mello 8 months ago Hi, your explanation is one of the best explanations I found. Space-time is not simply a flat cloth, but the 4-dimensional Universe that is everywhere. Thanks for sharing. 1 Reply ム 刀 ひ 乃 ノ 丂 ム 刀 ひ 乃 ノ 丂 11 months ago This just blowed my mind, never really understood what General Relativity had to do with gravity, this video showed to me a very different perspective from what I initially thought. 1 Reply ً 2 years ago This was the best video on GR ever seen. Was searching for this kinda video since I've got to know about GR. Thanks alot. The makers deserve alot of respect. ❤️. Thanks again. Keep going. This channel is a must follow science channel. ❤️ Please upload more English versions of your videos. Love and Respect from India. 🔥👍🙏 269 Reply 4 replies Angus Chandler Angus Chandler 3 months ago I think the current curved fabric representation is best for visualizing the path of light. Something that traverses a geodesic in space. However I think this new representation is best for visualizing anything else as it takes into account the flow of time as well and makes the 4 dimensions easier to understand. Reply Kinetic Symphony Kinetic Symphony 4 months ago Amazing representation. I feel like I understand General Relativity on another level now. One part I don't intuitively understand is the temporal dimension and why curving time somehow translates into a change of inertia of an object otherwise at rest. Reply 1 reply Pat Pat 1 year ago Amazing video. I love it. Just a thought. Should the 3d SpaceTime grid around the earth also have a twist to it, considering the angular momentum? Keep up the great work. 8 Reply 1 reply Paul Abukhalil Paul Abukhalil 10 months ago Finally, someone else said it! (Timestamp 3:14) That model with the rubber surface explains gravity by using...gravity. That always drove me crazy because the reason the ball or penny or whatever would roll toward the center was due to gravity NOT the curvature of the rubber-sheet space time. Space-time was determining the path, not the accelerating "force" in that demo. I knew it was wrong, but I didn't have a better option. Thanks for this video. Reply Foster Agbor Foster Agbor 10 months ago This way of thinking about the universe satisfies me! Thanks for the amazing visualization. 1 Reply atarixle atarixle 2 years ago When I was little, I always had the problem that gravity was explained with gravity. This video showed me that I never was alone. 95 Reply 9 replies P. Albi P. Albi 11 months ago Phenomenal. Never knew how much my understanding of general relativity was inadequate before this superb explanation. There are parts of that very good Stephen Hawking discovery show "Into the Universe" that now make much more sense to me. Reply Access Floor Solutions Access Floor Solutions 8 months ago (edited) Best explanation and animation of this concept on youtube. Thank you 👌🏼 Reply Endy Oh Endy Oh 7 months ago One of the better simple explanations that I've seen. Reply RalFinger RalFinger 1 month ago What an amazing video! Thank you for this wonderfull piece of knowledge! Reply Ted Sheridan Ted Sheridan 8 months ago This gave me two brain exploding moments - the curvature of the time dimension causing the apple to fall, and the outward acceleration of the earth in all directions. These are things I've never been able to get until now. Thank you! Reply Tod Wilcox Tod Wilcox 1 year ago (edited) Thank you for a very effective “visualization.” The beauty of nature is that it has no obligation to make itself understandable to any one intelligent animal using any one of their limited senses. A critical nod to the importance of role of the observer. Einstein, and any observer who can rise above their known limits, understands that we can’t actually “visualize “ what is going on! Artificial senses like mathematics and physics are tools that give us a tiny glimpse into these miracles by creating a junction between the reality and our wiring. Meanwhile, the average conscious human, and rabbits, etc, think nothing of it because it can’t be observed by their given senses. The apple falls………. And we just eat it. 46 Reply pradip subramaniam pradip subramaniam 5 months ago Im not so much of a reader, so this sort of video makes my learning such a delight. Thank you. Reply mreclecticguy mreclecticguy 7 months ago Best visual representation of GR I’ve seen yet. I always thought the ball on a sheet model fell short because ispace time isn’t a single 2D plane. 1 Reply rocheuro rocheuro 9 months ago To visualise a 4th dimention - time you can add a COLOR gradient to a grid lines for example, or make another change to the grid itself. It would show the time shift when approching a massive objects in space. 1 Reply Nordin Bouchtaoui Nordin Bouchtaoui 3 weeks ago What an amazing channel and it confirms my understanding of spacetime, planets and stars. 1 Reply Hrishikesh Ash Hrishikesh Ash 1 year ago Great video, I would like to know how elliptical orbit works and reacts to space-time. Kindly have this topic in you bucket list for a future video. I ❤ your contents. 1 Reply CheddarShady CheddarShady 2 years ago ive always wished a 3d representation of this existed, its cool that someones actually done it:) 41 Reply Ricardo Yzcoa Ricardo Yzcoa 9 days ago As a craftsman without math or physics background but with curiosity, this is very helpful. Reply jcsheu2002u jcsheu2002u 8 months ago the best space-time explanation I have ever been shown. Thank you! Reply Biggus Dickus Biggus Dickus 7 months ago This is so well explained I think even Mr Bean would understand it. Great video, well done. 1 Reply Gabriel Vidal Álvarez Gabriel Vidal Álvarez 6 months ago Could you add a color map to the grid to indicate where time goes faster/slower instead of/in addition to making the grid move with different velocities at different points? If I understood correctly how time is represented... 1 Reply Gohan Goku Gohan Goku 10 months ago Really fascinating. And now imagine how fascinating the creator of the universe must be. 1 Reply Nikhil Pasricha Nikhil Pasricha 2 years ago This video needs to be a part of the school curriculum. 843 Reply 26 replies Eli Solomon Eli Solomon 5 months ago That was brilliantly done. Thank you. Reply L S L S 4 months ago This is perfect. Better than I imagine it in my mind especially considering black hole phenomena Reply S C3141 S C3141 11 months ago As someone said Einstein would think about simple things we see every day, but he thought much more deeply than anyone else. Amazing graphics. 3 Reply Joe Brennan Joe Brennan 2 months ago Wow! I have been searching for a 3D grid version of gravity since the 2D sheet version, though a great introduction, never could help me visualize it as it should be, but I never thought of the straight line concept or time in the equation. This opened up my mind to see it in a way I didn't think about. Well done! Reply Eduardo Juan Eduardo Juan 8 months ago Amazing graphical explanation of time dimension! 2 Reply Zalphero Zalphero 2 years ago This is so mind blowing. Never seen a more better explanation. 219 Reply 21 replies George George 13 days ago Sir, deep appreciation for your work. You are so, so, so cool! Reply Indian Kafir Indian Kafir 5 months ago Perfect explanation of a really complex topic. 1 Reply GamerZone GamerZone 4 months ago I think for most people, this representation makes you grasp the concept a bit better, if this animation makes the concept "click" in your mind, take a look at the conventional representation of curved space time and you'll find you can get more information out of that than out of this video. Reply EnerJetix EnerJetix 4 months ago This, Veritasium’s, and Vsauce’s video on the topic is definitely my favorites. This one is extremely well made as well. Great job 1 Reply Gigabites AndKisses Gigabites AndKisses 1 year ago This video visualization helps me see why Einstein used the 4th dimension to describe the space time grid. The constant contraction looks like multiple hyper cubes in motion. The closest we have to a physical object that can represent this contraction is the Einstein trampoline grid. Which is great when you see it applied to marbles but a digital video representation of a trampoline lacked fidelity since the depiction is motionless, just like an actual trampoline. So I see the importance of your video representation. Thanks! Reply Mike Mike 2 years ago I've always visualised it in my mind like this, except more like points collapsing towards a mass rather than a grid. It's super difficult to explain to people who are not visual thinkers, but your animation makes it easy!! Nice work. 12 Reply Colin Wong Colin Wong 6 months ago Thank you for making such an incredible video. Just curious does this model explain why planets are rotating? Reply Kickstand Up Kickstand Up 5 months ago Good job well done. My late father was a physicist, and he was explaining this to me as a kid. IT was kinda understandable, but this video filled all the gaps. Reply Reefa Le Funk Reefa Le Funk 10 months ago I recently had a discussion about how our visual representations of gravity are inadequate. This is a fantastic solution Reply Klich Michael Klich Michael 5 months ago This is by far the clearest explaination/visualisation of the topic i have ever seen. Reply M.Imran Zaheer M.Imran Zaheer 2 weeks ago Very informative.. nicely explained ♥️👍 Reply Jasmine Irwin Jasmine Irwin 1 year ago I have been trying to wrap my head around gravity not being a force for a while now and you’re Video is what finally brought me some clarification. 161 Reply 3 replies Kuldeep Arya Kuldeep Arya 8 months ago THIS IS THE BEST VIDEO ON VISUALISATION OF GRAVITY I HAVE EVER SEEN IN NY WHOLE LIFE.... SERIOUSLY 🧡 1 Reply Leo Greaves Leo Greaves 4 months ago Wow. This helps me a LOT, especially the part about time Reply Lord Inferno Lord Inferno 3 weeks ago Each day I realise how little I understand reality Man it's kinda awesome and terrifying at the same time 1 Reply unnamed unnamed 9 months ago Can’t thank you enough for this animation, I have always interpreted gravity as an aspect of geometry, and i was never satisfied with the tablecloth visualization since it is only im 2 dimensions. However, i’ve always had a lot of issues seeing space - time in 4 dimensions since i’m autistic and have issues with picturing things in my mind(may not be related). 3 Reply Shashwat Bhagat Shashwat Bhagat 11 months ago Best channel for science stuff. Best explanation with Best illustration for curious nerds like me. Keep up. 1 Reply gauros gauros 2 years ago I like how he gives us some time to process the information that is new and we have never thought of before 9 Reply 1 reply corivian corivian 4 months ago This is do well explained, and still so hard to understand, because of the 4 dimentions! Great video Reply [First Name] + [Last Name] [First Name] + [Last Name] 5 months ago I love this explaination good job buddy you have understood the general theory of relativity quite well Reply I Click Like I Click Like 3 months ago (edited) I never looked at the sheet with balls representation as 2D or even 3D. I always looked at the sheet as a representation of a 4D object in 3D. But I never imagined what the 4D was. This is just ecsellent. Reply Puspak Gupta Puspak Gupta 6 months ago This is something I was looking for, questioning myself why always the fabric bends downwards....this video is THE PERFECT example to the explanation of Gravity to an ordinary person Reply Prashant Choubey Prashant Choubey 4 months ago Best explanation and visualisation of gravity ( space time curvature) Appreciate the hard work 👍🏼 Reply michelbhandy michelbhandy 2 years ago This is how I imagined it. That 2d model always felt incomplete because celestial bodies aren't sitting on a sheet of spacetime. 287 Reply 24 replies tarrioification tarrioification 8 months ago Just WOW. gravity was much more complex than i tought. I dont think there is a better way than this to explain what gravity is to a being that can only perceive 3 dimensions. well done Reply Moocow P Moocow P 4 months ago This visualisation has really helped me understand the concept of Spacetime so much better (although I still don't fully get it perfectly to be honest)! One thing I don't quite understand is that, as pointed out in the video, in order for the surface of the Earth to not fall itself a constant force of 9.8m/s needs to be applied to accelerate it outwards/upwards from its center. What is the force that is pushing it out at 9.8m/s in order to keep it stationary? Reply 1 reply Zen Bashtash Zen Bashtash 1 year ago Greatest explanation of an extremely hard idea to grasp on YouTube. Reply Highland OldGit Highland OldGit 4 months ago Brilliant ! I wish I had watched this before those time gradient videos 🤔 Edit. If you watch this and then the Veritassium (sp) one then it actually makes sense !! 1 Reply Stuart Goldsmith Stuart Goldsmith 5 months ago Excellent well done. Best I've ever seen. Reply Sarang Sharan Sarang Sharan 2 years ago Wowww.... You answered a question I always had!! Even though I understood that space time curves and that's why heavenly bodies revolve around a massive object, I never really understood why objects fall to the ground on their own when you drop them. I searched the internet extensively to get a visual answer to this question and never found it. You, sir, have answered it. Thank you sooo much!!! This video needs to be promoted as much as possible. It deserves millions of views!!! I will do my part in sharing this video as much as I can 6 Reply ScienceClic English · 1 reply Paul Oksnee Paul Oksnee 2 weeks ago This is the best conceptualization I have seen so far, but still very difficult. Reply blueblimp blueblimp 1 month ago This was interesting, but it'd also be interesting to see a comparison with Newtonian gravity to understand better how it differs. I think a grid being pulled on by Newtonian gravity would look somewhat similar, so I'm curious what the differences would be. 1 Reply 2 replies Yuvraj Yuvraj 1 year ago Super op vro 🔥🔥🔥🔥🔥🔥🔥 My all doubts are clear now , now I can actually imagine how space and time bends and object fall 😁😁😄 Thanks bro ,you deserve a like ❤️👍🏻 Reply Jason Gendron Jason Gendron 3 months ago Wow! Mind blown! I will have to watch this video many times more to truly comprehend! Reply MFB MFB 10 months ago This was mind blowing. Just perfect. Reply FirstRisingSouI FirstRisingSouI 2 years ago Wow, that's literally the visualization I've had in my mind for years. Surprised it hasn't been more widely animated this way. 10 Reply 4 replies Andy Monger Andy Monger 2 weeks ago Thank you for putting to rest the deepest conundrum of my life: an answer to the equivalence principle. Now when I lay down at night and dream of traveling the cosmos at a constant 1G, I know that it's real. Reply Rod Boothby Rod Boothby 4 months ago Thank you for such a wonderful explanation. Reply AlphaBravo AlphaBravo 7 months ago Superb video about a the best and most intuitive representation of the general relativity I've ever seen. 1 Reply Yaroslav Mytkalyk Yaroslav Mytkalyk 6 months ago Yeah that's exactly how I understood it. Once I heard about constant acceleration applied to objects on the surface of the Earth some time ago that's when it clicked for me 👏 Reply Ariel Ma'ayan Ariel Ma'ayan 9 months ago Really happy to finally see that somebody else has also had this idea!!! 1 Reply 0dWHOHWb0 0dWHOHWb0 2 years ago I struggled with this for a long time, and eventually wound up with more or less this same model in my head. I just wish this video had existed back then to save me all that trouble. I'll probably refer people here for whenever I'm trying to convey how GR works to someone. 115 Reply ScienceClic English · 12 replies videogameguy323 videogameguy323 8 months ago I was just thinking about this today, and it made me think, just as you did with the graphs, why not think of quantum physics in 2D first? That’s how we learn calculus and physics not because it’s easier but because it’s more predictable. Obviously I don’t mean the math part but we talk about fabric and strings so much and can’t even look at a bed sheet with a coin on one side and a coin on the other and assume they both are pulled towards the sheet. As 3D beings we can see on the “top” side a coin creating a dip and the “bottom” side creating a peak. When they meet they even out. Is this not what happens when particles and their respective anti particle meet? It’s hard for us as 3D beings to imagine the “other side” of this 3D fabric of course and I know they get caught up in the topography and geometry of how the fabric is put together and I don’t know if it has been thought of already. I also wonder if strings could be represented as wave functions, and if that has been tried. This is my first stop on my curiosity thank you for confirming some of my thoughts! Reply sujith gowda sujith gowda 5 months ago Mind blowing explanation and a big salute to Einstein for imagining all of this. Reply Pat Pat 1 year ago Could you do a video showing the warping of Spcetime for the Alcubierre Drive? All the ones I've seen online have the same problem as the gravity well of the warped rubber sheet look that is clearly incorrect. Thx! Reply Paul Cooper Paul Cooper 5 months ago Your videos are in the 99th percentile. Health and happiness. Cheers, mate! Reply Leilani Catrose Leilani Catrose 1 month ago This was amazing thank you soooo much ❤ Reply Cherokee Tears Cherokee Tears 2 years ago Every aspect of this video was on point. The Animation, Steps of Explanation, Speed of Narration, Pause Moments of Narrator, Backing Music and Word Choices... Highly Appreciated! Subscribed ;) 3 Reply Ahmet Houssein Ahmet Houssein 6 months ago I would love to see other version of this representation: 1) this shows the surface of the earth what does it look like as you dive in to the earth surface all the way to the center? 2) and with black hole and all the way to the center of the black hole? I love this representation!!!!!!!! Reply ChickentNug ChickentNug 8 months ago This is the closest ive gotten to feeling like I know what time dilation is lol Thanks for the video Reply MikeAW2010 MikeAW2010 11 months ago It truly is as if our reality is really like a computer simulation. It's something how constructed and precise our universe is, with definite limits and infinite possibilities Reply Pavin Siva Pavin Siva 8 months ago (edited) The best video so far in explaining this topic...Thank you Reply Wolphram Jonny Wolphram Jonny 4 weeks ago I really loved the last images, you can see that the earth is actually moving away relative to the grid, but the grid is contracting, and both compensate. Reply Michael Raines Michael Raines 1 year ago This. Is. Incredible! I love this visualization of GR, and I am showing this to all my friends - even the ones who say they aren't "science people" because I feel this visualization is actually quite intuitive and easy to interpret. Well done, and I hope this channel grows immensely. 45 Reply 1 reply Joluju Joluju 11 months ago This is really excellent and helpful. Reply Luis Daniel Torres Gonzalez Luis Daniel Torres Gonzalez 5 months ago Where is all the space-time fabric going to as time advances? Where does the space-time fabric comes from (during the animations it is pulled towards the earth from every direction? Excellent video. It solved many of the question I had while watching other videos and documentaries. Reply Ryan C Ryan C 1 year ago Phenomenal video. Thank you for posting this. Reply TechSquidTV TechSquidTV 2 months ago I'd really like to know more about your animation flow. What is the main software here? Reply Thomas Hardly Thomas Hardly 1 year ago This answers a question I've had for many years thank you Reply Maartensen Maartensen 2 years ago (edited) Awesome Visualization! The greatest joy in my physics study is the visualization of phenomena, so I really appreciate this. One small thing though: Would it be possible to create this animation as a perfect loop? The "reset" was a bit jarring, especially in the case of sun and earth. I have a hart time imagining how you would achieve that in my head though. Edit: I think this could be remedied by plotting the evolution of the farthest grid towards the center continuously. And to "restock" that grid by a new one coming from infinity. This would also help with the impression that the grid is changing over time. (I am thinking of a spiral that has one end, but is infinitely long in the other direction) 6 Reply K. A. M. Faisal K. A. M. Faisal 11 months ago Finally Some of my confusions are cleared. Thanks very much. Reply RAJMONI BASUMATARY RAJMONI BASUMATARY 2 weeks ago That's what I have been searching all this time. Explaining gravity by gravity was the major drawback of the 2d model. Thank you. Reply Cody Best Cody Best 1 year ago YES!! I am smarter than I thought. I was trying to wrap my brain around a 2d demonstration of relativity and it is confusing. the 2d plane represents 1 of all the possible plain being warped towards the center. This video just confirmed what I was thinking. Thank you! Reply Lorenzo Gutierrez Lorenzo Gutierrez 3 months ago This answers so many questions I had about the old models of a single 2d plane 1 Reply Daniel N Daniel N 11 months ago Thank you for addressing it. I’ve been getting frustrated with the rubber sheet visualization. There is no up and down in space!! It’s compression of spacetime in all direction by the object. The compression (like in zip file) is released when the dense object moves on. It almost proves that the universe is a mathematical calculation allowing events to expire as they move through the location Reply Trimalchio Trimalchio 1 year ago My man even pronounced the name "Einstein" correctly 620 Reply 20 replies BDay77 BDay77 7 days ago I have intuitively always felt that the traditional explanation of gravity using the classic heavy bowling ball on a trampoline visual was misleading. In my minds eye, I pictured it exactly the way you did in this video. At least for me, I find it more sensical to picture the fabric of space time “falling” into a massive object as opposed to a massive object falling into the fabric of space time. Thank you for sharing this excellent video. Reply Tanmay Kumar Tanmay Kumar 4 months ago best visualisation so far, on the whole yt, very very intuitive! Reply Lokilocke Lokilocke 6 months ago Ty so much for this upload. It’s so hard to explain this. Brilliant work :) Reply Carioka GH Carioka GH 10 months ago I've read a thousand articles, watched several videos but this was the one that I finally understood gravity! Reply MaxOrDie MaxOrDie 9 months ago Thanks, this helped answer some questions about the theory! Reply The Oreo The Oreo 2 years ago This is absolutely phenomenal! Fantastic explanation, and immediately subbed! 😁👍 3 Reply thegreatreverendx thegreatreverendx 4 months ago Not even Carl Sagan’s Cosmos could have explained this more clearly. Bravo. Reply Roshan Firouz Roshan Firouz 10 months ago That was excellent, thank you! Reply Julian Skidmore Julian Skidmore 7 months ago I always had issues with the rubber sheet analogy, precisely because it was explaining gravity in 3 dimensions with 'gravity' in 2 dimensions; for which one had to deduce that it was that gravity acting in a fourth dimension, which itself is wrong. The key for my understanding of special relativity is to grasp that we are always travelling at the same speed: c, where our vector includes a temporal one t such that it's (x, y, z, t) where c=sqrt(x² + y² + z²+ t²). Here we don't represent the speed along any one axis as dx, dy, dz, because these vectors are with reference to a prior inertial frame. Reply Elias Håkansson Elias Håkansson 6 months ago Great! The only challenge is the unintuitive nature of the "perpetual motion" of the grid in the illustration. Of course there is no perpetual motion, but rather it's the grid that is permanently twisted. That's what the traditional illustration of the spacetime curvature captures; the one with the balls weighing down on the sheet. Reply Ward Vereecken Ward Vereecken 2 months ago Great video! I don't think I fully understand yet why the spacetime grid moves inward constantly. I thought objects moved downward to Earth because they had a speed in the time-dimension, but at the end of the video it is explained that objects fall because the grid constantly moves towards Earth? Reply J T J T 2 years ago I wrote a comment before I read other people’s comments and... just wow... Universally similar reactions from people who’ve waited for this visualization. I can’t believe it took this long. And I don’t think the creator fully understands what they did here. It’s such a massive improvement. I never even knew about this channel but it deserves indefinite funding just for this video alone. I’d do it myself if I wasn’t poor as fuck. ^^ 5 Reply magalahe magalahe 5 months ago when i was a kid i thought of this same idea, and drew a picture of it. great video! 1 Reply BedaGenre BedaGenre 9 days ago Fascinating 🎉 thank you very much ❤ Reply Kameron Sullivan Kameron Sullivan 9 months ago How did you create your visuals? Do you have a copy of the program? Reply njbfoto njbfoto 4 months ago (edited) Very nice visualization & presentation ! I also do visualize that if planet for example earth moving with time the curvature gets distorted. Is it the movement of planet responsible for the time variation or time is responsible for the movement :) what comes first ? Reply Charlie; Charlie; 11 months ago (edited) Absolutely awesome video with great visualizations of something that can’t be visualized directly. Great job! 🌌🪐 I have a question though. At 7:40 you say “The curvature of spacetime […] has merely converted the temporal speed into spatial speed.” If it was “converted” wouldn’t that mean that the temporal speed is lost in the conversion? I’m having a hard time understanding the origin of the spatial speed. What’s moving the apple on the curves geodesic? Can anyone help with this? Also if the curved line the apple is following is caused by the time dialation gradient between its "top" and "bottom" parts, then wouldn't this movement be rotating the apple "forwards" (top going forward and down and bottom going backwards and up, essentially in the process of spinning it forwards)? If you throw an apple forward and time dialation is big enough to cause its trajectory to curve towards earth is it also rotating just as noticeably? Reply 2 replies Sean McGartland Sean McGartland 2 years ago Wow, so well done! This was a definite “Aha” moment in my understanding. I watched it this morning and almost felt goosebumps as so much just clicked into place. Then I went for a long run, which is my background processing time, came home, and watched it again along with your video with the circle of space time. Together, these two videos have done more for my understanding than dozens of others put together. 10 Reply ScienceClic English · 1 reply King James King James 7 months ago About time! Can't solve what you can't see or imagine. Okay I know physicist can visualize it but what about the students they're teaching. Great job! Reply yuvaraj murugasamy yuvaraj murugasamy 11 months ago This is great, please produce same kind of visualisation with all planets or few planets ? It’s bit hard to visualise how distant planets like Uranus could be in orbit around sun Reply Lava 321 Lava 321 5 months ago (edited) Thank you!!! I'm tired of the 2d model. I've been visualizing this in my head the last few months but had no way to illustrate it. Reply Code Generator Code Generator 10 months ago How can I thank you for putting this up? I really appreciate Reply Nm Nm 11 months ago Absolutely the really best video explained clearly 1 Reply viva libertas ergo vivite libertatem viva libertas ergo vivite libertatem 1 year ago (edited) Love this video. Listened to some courses on the subject last semester and it was awesome but it is really cool to see the more abstract mathematical concepts applied to physics and wonderfully animated and explained in a way that everyone can gain a lot from watching the video. Stay awesome! 8 Reply Jens S. Jens S. 9 months ago Everytime I see the bending sheet visualisation I'm like: "wtf that's just incorrect!" - The way you visualized is the way I had in mind. Thank you! Reply Coffee & Tea Coffee & Tea 7 months ago Excellent visualization. Can you put one similar video for black hole? Reply jean f jean f 1 year ago That's in line with the waterfall analogy of black holes : space flows inward and gets compressed transversely in the process, and elongated radially (hence tidal forces). The symmetry of the situation would be easier to see if a polar grid was chosen though, instead of a square one, with the small drawback that the warping would be less obvious. Reply scitor scitor 6 months ago (edited) Wow, finally someone who actually *pronounces Einstein correctly*! Cudos, liked and subscribed just for that! ... the best visualization of curved spacetime ever. Thank you so much! Reply Ide Jepang. ID Ide Jepang. ID 9 months ago Your thinking is same with my imagination. I had think like this before but i can't make the 3D model's. And you make it. Very Impressive ! Reply ً 2 years ago This deserves an infinitely large number of likes !🔥 309 Reply ScienceClic English · 8 replies Kristian Nielsen Kristian Nielsen 6 months ago Thank you so much for the video. I finally have some understanding about space time. Reply Christopher Herrmann Christopher Herrmann 7 months ago JUST THE VERY BEST VIDEO OF THIS "IMPOSSIBLE" SUBJECT! Thank you so much! Reply Siddharth Thevaril Siddharth Thevaril 5 months ago Thank you very very much for this. The 2D representation of space-time fabric never completely convinced me. I always wondered how someone would explain the orbits of planets and other systems which don't lie on this 2D space-time plane? For example Pluto. And what bothered me the most in the 2D representation was - in a horizontal plane, why was the space-time curve always depicted at the bottom of the masses? Why couldn't it be upwards? Or sideways even? To console myself, I visualised the fabric to be infinite space-time planes tangent to the masses. The only aspect I missed in my visualisation is that the bend should be towards the mass instead, which this video has done BEAUTIFULLY! I cannot thank you enough! Subscribed for more amazing content! Reply Kamil Kundera Kamil Kundera 10 days ago I've been searching for it for many days. Thank you! It's just stupid to visual these things and show people in this simply way and don't tell them that is just a simplification.... Reply Every 1 Every 1 4 months ago That's the best explanation of this subject I've seen. But I still don't understand why gravity isn't just considered a force. 1 Reply Chet Zoeller Chet Zoeller 1 year ago I've visualized this in my head for years! Space-time is 4 dimensional so the sheet illustration never satisfied me. Finally someone created a visual animated representation of what General Relativity actually looks like and how it functions. Thank you! Great video! 3 Reply Makens Attis Makens Attis 2 months ago Finally a video that gave me explanation I needed. Reply John Mcandrew John Mcandrew 4 months ago The last 45 seconds of this video are the best visualization of gravitational pull I have ever seen Reply Bern Stock Bern Stock 1 year ago OMG thank you for saying what I’ve been saying for years!!! Awesome channel Reply ArijitKD ArijitKD 8 months ago Great video!!! I just have a question: Does this mean that all massive objects (like the sun, planets, galaxies, etc.) in the universe are basically at rest relative to the space-time fabric, and the space-time fabric itself is contracting (and hence in motion) towards massive bodies? 1 Reply 1 reply BtO BtO 2 months ago The best video at all. Very impressive informative thanks 4 the effort Ciao boss Reply Nicholas Auwaerts Nicholas Auwaerts 1 year ago As a science teacher this really amazed me. This is the most intuitive representation of space time you could ever hope for! Well done and this sort of channels are a part of future education! 3 Reply Mark Spy Mark Spy 1 month ago Please explain what happens to the fabric as they pull each other (moon and earth ... or ... earth and sun) off of their central point of axis as they move through space time. Does the fabric stay simetrical, or is it warped at certain areas? Reply Mandar Deodhar Mandar Deodhar 9 months ago This is really fantastic explanation. It helps a lot in understanding and visualising general relativity in more accurate way. I have one question - When we consider time as one dimension, we can not actually say we are 'moving' along time axis. Rather we should be like a straight line along time axis, isn't it? And, that raises another question - our past to current time movement is drawn and stays but future keeps getting added, no idea why / how? Reply 1 reply zatnikutel zatnikutel 10 months ago we cannot visualize 4 dimension at once, so you removed one space dimension and in its place you inserted the visualization of time. Brilliant ! Reply Ajeje Brazolf Ajeje Brazolf 7 months ago Beautiful! Thanks 👍 Reply El Crypto El Crypto 6 months ago Wow! Simply fantastic 1 Reply Matthew Rammig Matthew Rammig 1 year ago I’ve been waiting for a 3D visualization of gravity as this is how I’ve always imagined it. It should be taught with this type of model. Well done👏 12 Reply Instances of AWOL Instances of AWOL 11 months ago Offically mind blown at all of this. brilliant. Reply sultana bilkis sultana bilkis 9 months ago I study in 10th standard . I have been taught that gravity is a force . Although thats not appropriate but this video just made me know so much new about gravity . Though i didnt understand all of it but I am proud i searched about space time fabric on yt. Reply Alberto Herrera Gómez Alberto Herrera Gómez 8 months ago thank you for your illustration, very helpful. I have a question. If the apple remains in the same space point, which is bending towards earth, how is it that the apple gets accelerated? Reply 얌주니 얌주니 7 months ago I thought about how to image the falling object according to the theory of relativity, and it was completely solved while watching the image with the variable of time. Reply Nikolay Klimchuk Nikolay Klimchuk 1 year ago Is there any way to curve space/time except by using large amount of matter? Is there some kind of exotic matter, field or energy that does it better? Reply 1 reply Heioshi Heioshi 2 years ago Finally, after a million videos on GR, i finally understand it. The creator of this video deserves an award 28 Reply FACTS FINDER FACTS FINDER 5 months ago Beautifully explained. 1st. time watching such video which is close to actual phenomenon. Reply Stefen Chapman Stefen Chapman 5 months ago This is epic, I imagined this years ago, to see it for real is great. But now that I've seen it, I see the flaw. The planet's are moving through the grid and warping it as they move. The grid lines are not getting sucked in repeatedly. You can still leave the planet's stationary, just move the grid around it. The real question then becomes will the grid keep that shape after an object has passed through it? Reply Azazel Azazel 11 months ago A great representation of how the earth is in constant acceleration underfoot, I have always had a problem in visualising this :) Reply NikTheFix NikTheFix 5 months ago (edited) The rubber sheet dimensional analogy still has some merit I think, and can be improved if you imagine 2 identical sheets displaced by a small distance such as to make a curved sheet laminate with a gap sufficient to contain a small frictionless steel ball. Now place the imaginary apparatus in outer space far from any gravitational potential and give the steel ball an impulse tangential to the laminate surface. The ball will follow the interior surface geometry due to the normal contact forces imposed by it's 'container' with no need for an 'elephant-in-the-room' gravity environment to maintain adherence to the geodesic path. Reply Matthew Morris Matthew Morris 3 months ago (edited) Everything is getting bigger relative to the scale of the fabric of reality. Damn, that explains a lot, such as why objects move towards other objects. They don't actually move, the objects both just get larger, but because they don't move, the distance from each other compared to their size appears to shrink - Even though they remain the same distance relative to spacetime. Reply Manolis Grifoman Manolis Grifoman 2 years ago I'd be interested to see how a black hole (which is basically a puncture to the space time) is visualised in that model. How time and space are reverted inside the event horizon and the event A has as a result the event B but they both happen simultaneously (I think) 3 Reply 1 reply Donald3.1459 Donald3.1459 5 months ago this diagram also helps me visualize the strong force and it may not be a force at all just time and it's effective matter in its smallest form Reply Paul Michael Freedman Paul Michael Freedman 5 months ago (edited) Incredible. I imagined over ten years ago that massive objects literally eat space over time, pulling everything in the affected spacetime grid towards earth. This is exactly what you represented. I have a feeling this way of visualizing may also enable us to logically deduce what happens inside black holes. Could it be that the singularity can never be reached? If one's speed reaches high enough relative velocity, time dilation would be so severe that quadrilllions of years could pass in the universe in only a fraction of a second from the traveller's perspective, allowing the black hole to evaporate before you reach the singularity (if it indeed exists, my description would suggest no singularity). You'd dive into the event horizon(assuming that is survivable), and a second later the shrinking of the event horizon by extreme accelerated release of information (instead of hawking radiation) would overtake you again , placing you outside of the ever shrinking event horizon again, but stranded somewhere in the heat death epoch of the universe. It also solves the information paradox. Information is just stored within the event horizon of the black hole and is released after an unimaginably long but not infinite, amount of time. Reply Anshik Kumar Tiwari Anshik Kumar Tiwari 1 year ago (edited) I thinks this topic is way easier to understand inside your mind rather than saying it out. Reply CrampySlayer CrampySlayer 7 months ago This is the best video explanation of space-time on youtube.Period! Reply Arsen Asvarov Arsen Asvarov 8 months ago (edited) Einstein is indeed undervalued. Most of us dont even understand into what depth his mind went. Thanx for the video! Reply Ethitlan Ethitlan 2 years ago I like how you pronounced Einstein the German way. 585 Reply 39 replies Max Smith Max Smith 2 months ago I've never agreed with Rowbotham's explanation of tides as it doesn't suffice well enough to me to account for their daily regularity. To me, it seems logical and fitting that there must be subterranean caverns beneath the ocean floor which, twice per day, draw in water, probably for purposes of filtration/cleaning, just like a mechanical filter or sump of a fish aquarium. On the surface, we see this manifest in the form of the great whirlpools Saltstraumen, Naruto, and probably many others that we don't know about. I suspect there are hundreds, or thousands of such whirlpool systems strewn about the world's oceans and that each whirlpool system ultimately leads to a natural drain, whereby it passes into great subterranean caverns and is tossed around under high pressure and high heat, remineralized with salt deposits, iodine, and then spewed back up into the ocean via the various hot water vents located in the deep sea trenches. I would say not only that this is likely, but I would go as far as to say that this HAS to be how it works. For if there were no subterranean sump/filtration system of the world's oceans, then how would the ocean not go stagnant? How would it replace lost salt, iodine, and other life supporting minerals and maintain a stable consistency unless it was being run daily through a filtration system which remineralizes it from deposits under the earth? It wouldn't. And just as we know the whirlpool in a bathtub, pool, or toilet is indicative of a drain below, we can know that the giant whirlpools in the ocean are also indicative of drains below. When being sucked in, you know the water is going somewhere. And when being spewed out at the hot vents, you know the water is coming from somewhere. The two are connected. It's a giant subterranean filtration system. I wrote out this theory some time ago either here on a YouTube comment or on the ifers forum, I can't remember. But you have expounded on it and put it together better than I could have, and also mentioned that its rhythm/frequency could be caused by electromagnetism and/or the north pole, which I never thought of, and is a fantastic working explanation that ties it all together. This is one of the more fascinating topics of how this flat earth works! Reply tea_hanks tea_hanks 9 months ago The best explanation to space time so far Reply Merry Apple Paas Merry Apple Paas 4 months ago Wow thank you for great representation .. its so awesome .. Reply Sas Sas 2 days ago Amazing visualization! Reply Johnny Knight Johnny Knight 8 months ago I didn't know that General Relativity said that the spacetime continually contracts - I came to that same conclusion on my own. Reply Captain Hades Captain Hades 2 years ago Kudos to you my man. This deserves way more views so more people get a grasp on what GR is. Very well done. 3 Reply D S D S 8 months ago (edited) 1. The grid has to be more concentric or look like spider net 2. The moving rate of the grid is 3x10^8/s 3. The speed of light is constant, it doesnt bent with the space-time fabric so that explain the time dilation Reply Attila Cseh Attila Cseh 8 months ago Superb visualisation. It looks like mass is eating up spacetime. I wonder if this is the reason for the expansion of the universe. Reply BlueDawn1776 BlueDawn1776 1 year ago I have only seen these "contracting" geodesic visualizations -- a departure from the more familiar and less accurate elastic sheet model -- in the past couple years. Is this a fairly new representation of the gravity phenomenon, or have I just not been paying close attention? 1 Reply Davide Ciattaglia Davide Ciattaglia 4 months ago I really needed that 8 years ago, thank you Reply Potato Potato 5 months ago Well done! 😄👍 1 Reply trth1 trth1 1 year ago When I was a kid I always found the tarp analogy problematic so with some thought I came to the same visualization of how gravity worked. Nice to see someone create something more in line with how gravity works 8 Reply SlendyDie SlendyDie 4 months ago I was taken by surprise when I heard you pronounce Einstein properly. Nice 👍 1 Reply Levi Levi 7 months ago Thank you!!!! This was THEE BEST explanation I've ever seen 1 Reply Baer the Blader Baer the Blader 8 months ago I feel validated, because I always thought that the ball on the sheet made no sense, yet everyone else was like “duh, it’s so simple”. I kept asking “where does space bend into?” and teachers/students acted like that was a stupid question. It feels good to have back-up for my questions. I am glad that I am not the only one who thinks that using gravity to explain gravity is nonsensical. Reply Saurabh Audichya Saurabh Audichya 10 months ago Is that constant differs from object to object...or is it the same for every two bodies involved? Reply WillBrink WillBrink 8 months ago Very helpful! Reply M Nguyen M Nguyen 2 years ago 5:21 this illustration is what I've always had in mind when thinking about the curvature of space. Thank you for finally making a video about it, and for developing it further than what my mind could imagine 6 Reply Phy-geek Phy-geek 6 months ago This is one of the finest explanation and visualization of General relatively!!!.... Reply Colin Duffy Colin Duffy 2 months ago You could even add chromatic aberration closer to the center to reflect light being split Reply ム 刀 ひ 乃 ノ 丂 ム 刀 ひ 乃 ノ 丂 11 months ago Why does this have dislikes? It's brilliant Reply Eduard Roehrich Eduard Roehrich 10 days ago Thank you so much for this video! Every time I saw those typical visualizations and demonstrations that you show in the beginning of the video, it always made me wonder why the moon doesn't crash into the earth, why the earth doesn't crash into the sun, and so forth. Now I FINALLY understand that the earth doesn't actually orbit the sun, the earth is just travelling on a straight trajectory and because of conservation of momentum, no forces acting on the earth, and spacetime being distorted by the mass of the sun, it just APPEARS as if the earth is orbiting the sun. The earth is just travelling in a straight line; wow, I can't express how profound it feels to me to FINALLY understand this! Reply Kim Allows Life Kim Allows Life 7 months ago This stuff is world-class! Reply TronMemes TronMemes 1 year ago Love this channel. The voiceover, the visuals, the daunting/mysterious music, absolute perfection. 14 Reply Cvetimir Nikolov Cvetimir Nikolov 1 month ago Would be nice to add the expansion of the universe into that model. 1 Reply Sergio Reyes Sergio Reyes 2 months ago Excellent alternative to the old model representation. But I still am at a loss. Can we say that time causes gravity, by causing the 3D spacetime diagram to warp inward toward a mass? I would really appreciate an answer, a clarification. Thanks! Reply 1 reply Chris Parnell Chris Parnell 2 months ago Thank you, for a lay person who could naturally see these limitations it was very frustrating. Reply Chris Fudala Chris Fudala 10 months ago This video Just blew me away and made me understand General Relativity Reply Deep Field Studio Deep Field Studio 5 months ago exactly - I have been saying this for a couple of years. the rubber sheet model presupposes another force downwards. Whereas the definition of curved space demands that space be like a gel within which objects "compress space. Reply Zeus Almighty Zeus Almighty 1 year ago This has blown my mind in different ways every time I’ve watched it and I still don’t understand relativity. You are a certified geniuses 86 Reply 17 replies Matthew Gordon Matthew Gordon 3 months ago I really don't get physics very well, but I had a kind of silly thought. If mass curves spacetime in a manner that seems like contraction, how does this relate to dark energy, which I have heard causes space time to expand? Reply Rob Fowler Rob Fowler 5 months ago I came up with my own model as a teen. If we assume that time moves slower (even if infinitesimally slower) around a massive object, then we can also assume that an electron in its orbit around its nucleus is cutting a path which is half of the time moving toward an area where time is slower and half of the time it is moving toward an area where time is moving faster. My assumption is that the time differential can create a sort of drag on the electron as its moving away from the massive object which could them propel the entire atom towards the c.o.g.. I imagined electrons spinning around their nucleus were like a bicycle wheel spinning on its axis. Only as they spin they are crossing through space time. So in half of an electron's trip around the nucleus its moving towards a local center of gravity and half of its trip its heading away from that c.o.g.. All you have to do is create a drag on your bicycle wheel on the side moving away from the cog and the whole wheel wants to move towards the c.o.g.. Now even if the time differential was infinitesimally small, consider how fast the electron is doing it and how many trips is it completing and how many other atoms there are in the object. they would add up to a significant force. The only thing this doesn't do is explain WHY the massive object warps spacetime in the first place. 1 Reply G I G I 9 months ago (edited) 10:10 my mind is blown. Beautiful representation 10:25 my mind is blown again. Surface gravity! Reply trancemaster5009 trancemaster5009 9 months ago Super video. Space and spacetime is truely warped and twisted. I believe aliens have made ways to create their own super strong gravities to allow them to move around whereever they want, at will. Reply shaeena styles shaeena styles 8 months ago Hello, may I use the animation as an example in a competition I will be joining? Reply RolledOats RolledOats 1 year ago I have heard physicists say that "Time causes gravity" before and never been able to wrap my head around how that makes sense. This finally made it click and I now feel I understand the idea intuitively and not just as words. Thank you very much for your awesome video! 11 Reply cuneyt aks cuneyt aks 8 months ago I've asked this several times. Why gravity is being explained by using gravity. Thank you for the explnation Reply Lisa C. Lisa C. 11 months ago Your videos are great! Reply Shahzad Aslam Shahzad Aslam 4 weeks ago well today i understood spacetime a bit more with this animation it alwasy blow my mind whenever i think about spacetime i always think time is independent of anything but animation made it clear just imagine i got idea with so many trying to explain this for so many years and somebody understood this that blow the mind Reply Thoban Atif Thoban Atif 4 months ago I bet my teacher hasn't seen this visual representation and only know the definitions now I can flex my knowledge in class 🗿👍🏻 1 Reply João Fábio João Fábio 11 months ago I'm not the guy who thumbs up every single video I watch. But this time it was more than deserved. Good job! Reply Sumeet Rakshit Sumeet Rakshit 1 year ago Thankyou ScienceClic, I donot come from any background of physics, but space science is a forever favourite topic of mine to learn. Your awesome visualization helped me to understand this theory bit better now. 😊 4 Reply Bill Cobb Bill Cobb 8 months ago Now that was awesome ! I studied physics a long time ago. I was told it was a dead ended science. Wonderful to see it continue. How do we now go back in time ? Reply Nicolas Nicolas 11 months ago Fantastic video! 1 Reply Matti Kallio Matti Kallio 4 months ago Quite nice, I like it! Reply Jesus The Astronaut Jesus The Astronaut 10 months ago Holy shit this really does an amazing job of connecting mass/gravity/time into different faces of the same phenomenon. Thank you 1 Reply david muñoz david muñoz 1 year ago Wow, is exaclty the represetation that I was looking for, awesosme work, thanks. Reply PLASTIC PLASTIC 1 year ago truly this video gives every single answer.... you took my heart bruhh ❤️😭 Einstein would be so proud of you.... you finally explained it so perfectly, that one who was getting problem to understand the unclear representation of this theory, would be crying the tears of joy 😭❤️👍 6 Reply Kujo jotaro stand:[Ocean man] Kujo jotaro stand:[Ocean man] 3 months ago (edited) Yes omg thank you! As a kid I always thought that videos of professor using trampoline to represent gravity make no sense, as it break alot of logic of itself, finally I was proven right by the experts! Reply franzzi franzzi 4 months ago finally I found a better explanation than the silly elastic sheet, which does not really explain anything. Great many thanks to the author of this video ! Reply 김콩팥 김콩팥 5 months ago I couldn’t understand intuitively how Satellite floating in orbit with traditional visualizations. Till seeing this clip. This is gives direct sense of how gravity works ! Thanks!! Reply MD Moazzam Hossain MD Moazzam Hossain 2 months ago This is the most amazing video on space time ever. Reply Spyro Spyro 9 months ago (edited) I like the idea, and the whole methods of explaining this complex matter with those brilliant (!) animations and music which magically seems to enhance my ability to concentrate. But now it looks like Earth 'consumes' spacetime like a Black Hole or something . Is this intended? And if yes, where is 'new' spacetime generated to compensate this..? Reply mathysics mathysics 2 years ago Finally, it accurately described/showed what they mean by space and time curvature all along. Awesome animation. 7 Reply WistrelChianti WistrelChianti 5 months ago ug... I was getting (slightly) ok with the idea of stuff following a straight line but if space gets curved it goes a longer path and travels towards a mass... had only considered time though with respect to preserving the speed of light in such circumstances (i.e. appearing to go faster or slower)... hadn't thought about it curving too or why any movement happens to (what would otherwise be) stationary objects Reply Sampath Sri Sitinamaluwa Sampath Sri Sitinamaluwa 11 months ago I've always hated the "marbles on a rubber sheet" demonstration, precisely because some of the problems you pointed out: The problem of 3D objects being on a 2D space, and again the problem of it needing gravity in the 3rd dimension. I asked myself: why law says space bends "down" when a massive object is present? Why can't it bend up? Wouldn't light bend "away" from the central mass if it bent up? That model never made sense for me. Thank you for putting the finger onto it and coming up with an absolutely beautiful, sensible, and wonderful model. <3 Reply Stephen Holyoake Stephen Holyoake 6 months ago Thank you for such a well presented visualization of the 4th dimension which until now I believed to be nonsensical and complete codswallop. I now after 40+ years finally understand the concept of space time. Reply Нұржан Шым🏚🏴 Нұржан Шым🏚🏴 11 months ago always thought that space is three-dimensional, and three-dimensional attraction, each celestial body has its own axis of rotation at different angles, you are my like-minded person! Reply S.M. Sabbir Hasan S.M. Sabbir Hasan 4 months ago That's amazing. I did know about that space time curvature. But that is the best visualisation i had ever seen about speace time and gravity. Reply Marie Smith Marie Smith 1 year ago This is so difficult to understand and yet so fascinating. It drives me crazy because I want to understand but I can’t grasp it. 71 Reply 12 replies Andy Spence Andy Spence 7 months ago (edited) That is an amazing demonstration. AND, What I find most difficult to understand is how space can have a structure that can be deformed by matter. What is this structure? What is it composed of, this space-time fabric? And does the fabric of space extend beyond the universe of matter in an infinite expanse? Reply antony george antony george 11 months ago I'm 27 and today was when I really understood general relativity or even gravity 1 Reply Pijamita Pijamita 11 months ago Thanks for the amazing video! Reply Alex Czech Alex Czech 2 days ago really cool, I stop what I'm doing to watch your videos, every time I get that little "ha! that's so cool, now I get it" feeling. I was thinking it's interesting in a meta way that the first way we learn to picture gravity is by your example of a ball on a sheet. I kinda imagine this as how humanity understood gravity when all we had was Newtonian physics It does work, and it does make sense, but it's not the full picture. We could launch satellites and gravity assist sling shot them all the way to pluto with no problem at all with only those Newtonian physics to help us. It would work and we'd have a pretty ok idea on how to launch rockets and maintain orbital velocities and how a universe works. Then our boy comes along and discovers an even deeper more fundamental model for the universe and it's like oh NOW we get it! Just like your final model does for helping me get a much more correct and intuitive understanding of the nature of gravity, just like relativity did for humanities understanding of gravity and how the universe actually physically works. Reply Bilal Beigh Bilal Beigh 11 months ago Incredibly explained.. but can you make a video on space time Reply George Kfoury George Kfoury 2 years ago This is the most satisfying visualization of gravity so far, yet somehow i'm feeling unconfortable 😅 10 Reply FunLightFactory FunLightFactory 7 months ago Holy smokes, I actually understood this. Thanks! Reply Gyanendra Singh Gyanendra Singh 3 months ago Watching in 2022 and I am amazed at the visualisation done in this video. One of the best videos to understand and visualise the space time and understand general theory of relativity Reply Nirmal Chathura Nirmal Chathura 1 year ago Helped a lot to visualize Reply Yasir Farooq Yasir Farooq 8 months ago wondering what software or program you use for animations? will you tell that? Reply OneLine OneLine 4 months ago It sure is much better. So an instant would be the convergence of those arrows. Two objects would have different instants that would themselves tend to create an ultimate instant, a joining of instants. The more joining, the faster the arrows. Now you have to wonder if something that escapes gravity, or that goes up, does it go against time? does it go backward in time? that opens a whole lot of interesting avenues. Because in that view, time is a sphere of sort, so either you go to the pole, or you go to the equator. If you are on the equator, it is easy to predict where you to, while if you start on the pole, it is impossible to tell. If you can't push in a particular direction, then it could go anywhere and back in time. Give it enough energy and it will seem random. Reply Maaz Hanif Maaz Hanif 2 years ago WOW...! You finally did it 👍 This was the intuition that I always had inside my mind but never found anyone talking about it. 25 Reply 1 reply wiseversity wiseversity 3 months ago This was one of the best examples, but had you added the sun earth and other stellar bodies moving away from each other (or the center of big bang) then it would show that bodies moving away from the bang being a part connected to the grid is possibly creating waves and hence such waves on grids affects the space time of other bodies which are distant. Great video though. Thank you. Reply Sharwin Gosavi Sharwin Gosavi 4 months ago (edited) I have a doubt that if an object is parallel to the lines of grid of space-time,then according this representation,at a point very far away ,where the space is curved very little,the object should bend towards earth and then again move away to remain parallel.but this is not the case in your animation. Pls help Reply T-jayy Troyer T-jayy Troyer 10 months ago Wow I've thought about this. Thank you! Reply D. Lawrence Martin D. Lawrence Martin 4 months ago This Is Evolution at it's Finest! (An Evolving Perspective), Love It! Reply Stanley Cates Stanley Cates 5 months ago Helpful. I am constantly watching the cal tech lectures on U Tube - the Mechanical Universe and Beyond. No one will ever completely understand the universe. But keep trying :) Reply Cossack13_Dota Cossack13_Dota 1 year ago Thank you so much for this video!!! I have always been annoyed by the demonstration with a stretched fabric and I am very happy to see that other people also understand its strangeness. I think I started to understand this theory better thanks to your video. Thank you again!!! 4 Reply Chris Marklowitz Chris Marklowitz 1 month ago So does every object have its own fabric of space time thats where I get confused. Lets say you drop two objects the first one is dropped much higher and as soon as it reaches the second object that is lower the second object is dropped. Now the first object is moving faster than the object that was dropped what would this warped fabric look like to explain different speeds of the objects? Reply Dutchboy Dutchboy 5 months ago If the temporal motion can be translated, naturally, into spacial motion in a given direction then can spacial motion be translated into temporal motion in a given direction artificially? Reply kerimw14v kerimw14v 11 months ago Fantasic, thank you. Reply krolsky krolsky 4 months ago This video deserves an award. Reply Uga Uga Uga Uga Uga Uga 9 months ago At 4:28, "inside spacetime," the problem is that the model seems to depend on motion to explain for how the objects meet as they move along this "bent" trajectory. However, it creates the problem of placing a stationary object near an equally stationary sphere. In that situation the object should not be affected to move towards the sphere, and there would not be any gravity at all, since the object is not moving along that fabric. This hypothetical situation suggests that gravity only takes effect if there is at least some motion in either object. Reply Giuliano Goffi Giuliano Goffi 2 years ago No doubts, this is the best video about relativity that I ever watched in my life!!! This is an amazing job!!! 3 Reply Jonny Lightbody Jonny Lightbody 11 months ago Great video mate! thank you. I hate the usual visualisation of gravity they show everyone Reply maurette eric maurette eric 3 weeks ago Excellente vidéo. Merci 1 Reply Lisa Price Lisa Price 9 months ago Thank for that great movie. You did such a good job. But I think if you stay closer to Einstein you might come up with a more accurate representation. In fact showing the stretch of lines of a normal 2 dimensional representation in a 3 dimensional way would just work much better than your example, because the amount of lines (spacetime) in such a case would stay the same and the forces like the expansion of the Universe as well Gravity according to Einstein is taken care for. To explain it in trivial words, according to Einstein there is no gravitational force between two bodies of mass. Every force has a counter force. Mass revolts spacetime. Hence f.e. the curvature of light passing a planet. Spacetime curves, light is flying straight, as you mentioned. But to represent spacetime correctly you need to have less spacetime (lesser lines between 2 bodies of mass) because mass repels spacetime. In other words, when you bring two bodies of mass close together, they both repel the spacetime between each other to a stronger amount. Spacetime gets pushed out. As a result there is more spacetime outside and less between the two bodies of mass, resulting in a push of spacetime (actually a constant push) that forces the apple to fall to ground. And because further outside the universe is less spacetime, the universe (spacetime) is expanding. Reply Pat Hickey Pat Hickey 4 months ago I always questioned the flat plane model. The universe is not on a plane. Was always told to imagine a sheet with a ball in the middle, and others will fall to it…I can’t. I want to see the solar system modeled like this. Reply Malhar Veesar Malhar Veesar 10 months ago This is really a amazing 3D animation haven't very helpful to understand space time curvature bending Thankyou, 🌸 and here my mind blows that how Einstein lift this work up without any 3D animation and he use to made these figures in his mind. 1 Reply Manmeet Singh Manmeet Singh 2 years ago In two words, I am "utterly amazed" at how incredibly made this video is. A really nice work man. U made something which seems harder to understand much simpler. I will end it with 🙇 I am really looking forward to your upcoming videos. 48 Reply 1 reply Itsiwhatitsi Itsiwhatitsi 2 months ago This Channel is pure genius Reply nitish kumar nitish kumar 10 months ago (edited) best visualisation for space time. I have always been confused with the trampoline curve as it uses gravity to explain the motion in space time curvature but in reality gravity is the space time curvature. Reply Ale24 R Ale24 R 4 months ago Wow now i understood Thank for explaining Reply Paulo Grigório Paulo Grigório 9 months ago the best three-dimensional explanation of spacetime warping - thanks for share us Reply cryptocoinscafe cryptocoinscafe 1 year ago Finally an animation that's closest to actual space, time, matter animation. That said, it still seems like space time would become compressed as the earth rotates around the sun. For example, greatest compressed space would occur at surface of earth, which seems would reverse the trajectory of an apple. Instead of falling towards the earth, it seems it would be falling away from the earth. Reply robSHEPart robSHEPart 1 year ago (edited) Subscribed. I've always had a problem with the way Gravity or Space-Time has been portrayed in the past but I have no deep scientific understanding to express why I had issues with it. Your explanation is the best I've ever seen. Thank you. 3 Reply Ahmed G. Rabie Ahmed G. Rabie 11 months ago The best explanation I have ever seen Reply Zach Zach 2 months ago I remember seeing these typical visualizations of gravity and saying the same thing. It felt like a problrm to use gravity to explain gravity lol. Reply pointlesspos pointlesspos 1 month ago Can you add multiple large objects, like planets, so we can see the grid reacting to multiple objects, rather than just earth? An interactive mesh would be interesting to see, more fluid like. The way the demo looks is that only the single largest object affects the grid. The grid isn't affected by the apple, or the earth when it rotates the sun. Reply درس قرآن مجید درس قرآن مجید 7 months ago Sir I have been thinking of this theory since 2011 and still I didn't take it. Where should we put the net when some of the planets are upper and some are in lower range. How can we fit these planets in the net of 4D Reply Michael Pollard Michael Pollard 4 months ago Glad that's cleared it up. Reply Babur Makhmudov Babur Makhmudov 2 years ago After so many years, I finally seem to understand! Thank you for an amazing animation. 5 Reply MasterShamo ( Pokémon ) MasterShamo ( Pokémon ) 5 months ago Finally someone that explain this super cool .. i was sick of the flat univers theories ... Albert showed this on a flat idea just to give humans the idea of general gravity and not that he wanted to say that space was flat itself ... this was the best explain ever!!! Reply PSG Mobile PSG Mobile 2 months ago What causes de acceleration of planet's surface upwards? Great video! Reply Sandeep Niduvali Sandeep Niduvali 1 month ago Amazing explanation Reply Mingshuo Ji Mingshuo Ji 3 months ago This is the greatest animation on the subject, now the Earth (or the Sun) does have correct relationship with the contracted Space-Time fabric! Reply Akshay Kaul Akshay Kaul 1 year ago great visualisation. the only thing that is unclear is why "the temporal speed" should be converted to a "spacial speed"? In other words, why does the distortion of the time axis cause a movement on the space axis? Reply 1 reply MS3300 MS3300 1 year ago 7:00 this is the greatest way I've ever seen to represent time and space! Well done! 39 Reply Daniel Kovacs Daniel Kovacs 6 months ago Actually this sort of visualization is the one that rests on the actual nature of gravity: that it is the bending of space-time and not just space. Many people ignores the fact that the bending of time is what brings motion into the picture. This is what gives a body initially at rest a velocity which is needed for the body to remain on a geodesic trajectory. Reply Dylan Dylan 2 months ago The hardest part is forgetting concept you have grown up with. You have to forget the use of time, it’s just a measurement of movement, in a sense not the end all answers, we are missing a piece to an answer we can’t understand how to ask the staring question. Considering our dimensions as 3D we have to imagine space/energy/gravity in a 4D aspect, indirectly in affect. Reply Sammy Gillespie Sammy Gillespie 6 months ago (edited) I like this, but I think it masks the spcial curvature of spacetime. It's non-obvious, for example, what path light would take in the final animation, as the time component would "freeze" for light moving through spacetime. 1:27 / 9:04 • Albert Einstein How Einstein Thought of the Theory of Relativity Beeyond Ideas 183K subscribers Join Subscribe 27K Share 926,290 views Premiered Jun 23, 2021 #Relativity #Gravity #Einstein In 1895, a 16-year-old boy imagined himself chasing a beam of light. This thought eventually changed the world forever. So how could one thought change the world so thoroughly? Visit https://brilliant.org/BeeyondIdeas/ to get started learning STEM for free. The first 200 people will get 20% off their annual premium subscription. If you'd like to see more of this kind of video, consider supporting our work by becoming a member today! https://www.youtube.com/BeeyondIdeas/... Follow us on Instagram: https://www.instagram.com/beeyond.ideas/ Script: We cannot start talking about Einstein without discussing a classical physicist Sir Isaac Newton. In 1687, Newton published his book “Mathematical Principles of Natural Philosophy”. In the book, he described his three Laws of Motion and the Law of Gravity. His book is considered one of the most important writings in the history of mankind. After watching an apple fall, he asked himself a question. And if the apple falls, does the moon also fall? These questions led him to discover the Law of Gravity. According to his Law of Gravitation, every object in the universe enacts its own force of attraction on another object. And this force is the reason why we are stuck on Earth, why the moon orbits the Earth, and indeed, why the universe exists. But that didn’t answer all of Newton’s questions. Like, why do objects attract each other? What is the source of gravity? And why does Mercury's orbit jiggle? The rest remained a mystery until the era of Albert Einstein. In 1915, #Einstein published his Theory of General #Relativity, or in other words, his theory of #Gravity. In this theory, Einstein explained gravity and its source. He answered all the questions that Newton couldn’t, like Mercury’s precession. Let’s take a step back here to 1905, to truly grasp where these different pieces of the puzzle come to life. This year, Einstein published his Theory of Special Relativity. It deals with the speed of light and the motion of objects. It was fine with non-accelerating objects, but the theory did not apply when gravity was present, or if the object was accelerating. He couldn’t quite figure the rest out. Until one fine day in 1907. He was observing a window washer on a ladder and had an epiphany. He thought about what he would be experiencing while falling. He imagined himself there and realized that while falling, the ground would not be pushing him, so he would be in a free fall. That put some of the pieces together, but he still wasn’t fully finished. He began to think about falling again, this time he imagined himself in a room with no windows. On the surface of the Earth, you would weigh whatever your weight is now. But imagine if the room was in a spacecraft, moving in an upward direction with the same 9.8 meters per second squared as here on the ground. In that moment, if you were to weigh yourself, you would weigh the same as you do on Earth. Einstein realized that the observer would not be able to tell if he is on a spaceship, or on the surface of the Earth. That is because he would be moving at the exact same rate of acceleration. There would be no way to tell the difference. This phenomenon is called the Equivalence Principle, which states that an object that is accelerating free of any gravitational pull is essentially no different than the same object that is stationary but affected by gravity. In other words, something moving in space with no gravity has the same mass as something on earth that is not moving. In his special theory of relativity, he could only deal with non-accelerating objects and the speed of light. Let’s pause here for a second. This means that at that point, he knew how to unify his theory of special relativity with gravity. Luckily, he didn’t stop there. He did another thought experiment. This time he imagined what would happen if he pointed a laser beam from one side of the room towards the other. If the room were in a spaceship that was moving upwards with the same acceleration rate as earth, the height of the beam would slightly be lower on the other side of the room. As the floor moved up, it curved the light and caused it to bend down. But, this principle only applied in space. When he thought about the same experiment on earth, the light would appear to be straight. Of course, these two scenarios only happened in his brain. Let’s just take a brief moment to appreciate how brilliant he is to be able to conduct that experiment, all of that, in his brain. Einstein wasn’t convinced though, as this violated the principle of equivalence. The acceleration of the room on the spaceship was the same as under the influence of gravity. The heights should be the same in both cases, so why were they different? He realized that the only possibility could be that the light beam must be bending under the gravitational influence. But how could this be? What does this bending of light mean? Chapters View all 1,010 Comments rongmaw lin Add a comment... BogdanM BogdanM 1 year ago We owe everything we have today (thus the easy life compared to 200,000 years ago) to a few brilliant individuals that greatly advanced human understanding. Thank you Einstein, Newton, James Clarke Maxwell, Marie Curie, Edwing Schroedinger, Tesla, Stephen Hawking and many others for getting us this far in a short time span! And rooting and cheering on the current scientists who are very hard at work to better humanity! 1.3K Beeyond Ideas Reply 100 replies Säyda Säyda 1 year ago Einstein's knowledge was almost a century in the future. Truly amazing how he could understand and think about that. Takes an exceptionally open and creative mind to be able to do that. 561 Reply 41 replies M L M L 1 year ago I have watched so many videos explaining Einstein's Theory of Relativity. I have found your explanation to be the best. Simple and concise. Thank you! 371 Beeyond Ideas Reply Beeyond Ideas · 9 replies ItsKee ItsKee 1 year ago It's interesting how Einstein's theories all tie together. More interesting the fact that he was able to come up with his Equivalence Theory before man had even left the atmosphere. It goes without saying, but his intelligence is one in a millennia. 176 Reply 17 replies Vinit Shandilya Vinit Shandilya 1 year ago This channel is criminally underrated. It deserves so much recognition. Thank you so much for bringing complex physics to general population. 62 Reply 6 replies Maz Maz 1 year ago "If I have seen further than others, it is by standing upon the shoulders of giants" - Sir Isaac Newton. Just as the giant leaps today we make in science are made possible by Einstein, his leaps were made possible by others, and theirs by others, and so on. We couldn't have made it to where we are without ancient people like Eratosthenes, Gan De, up to Gallileo and Faraday. Hell, without Plato and Socrates, we might not have even had a society that allowed for critical thinking! 221 Reply 9 replies tango dman tango dman 9 months ago Einstein was a rare breed genius who somehow managed to outperform all the other genius of his time. Even 100 years after his theories, we are still verifying and founding everything correct. He has given so much that, it looks like for the next 100 years we will continue to do so. 65 Reply 5 replies Mike - Acts 4:12 Mike - Acts 4:12 1 year ago Awesome video! I understood to some degree each of Einstein's theory separately but you helped me understand better how they tie together 42 Reply Nektarios Nektarios 2 days ago This is a great explanation of how Einstein thought about the Theory of Relativity. Thank you! Reply Brendan Ryan Brendan Ryan 1 year ago Great job Harry .. you took the explanation of a fascinating and extremely difficult theory of relativity and made it a bit clearer for me. thanks for that. 28 Beeyond Ideas Reply Beeyond Ideas · 2 replies GoPlay Man GoPlay Man 1 year ago Thanks for making contents like these! We will support you in anyway man! Knowledge never ends, MUST KEEP LEARNING :) 10 Beeyond Ideas Reply amarjeet kumar amarjeet kumar 11 months ago I probably watched a hundred videos but this is the time i say i understood what it actually means. this was the simplest and best explanation i found so far . Loved it 7 Reply 1 reply I'm nothing I'm nothing 5 months ago After watching plenty of videos finally able to understand this theory in simple words.. thank you very much sir🙏 5 Reply 1 reply Sanju Sanju 1 year ago (edited) Nice video guys. Very nicely made I have to admit. The host was so calm with what he was supposed to explain and the video didn't feel too dragged because of the good explanation. Keep up the good work. 👏 5 Reply Larry Merkle Larry Merkle 1 year ago I really like your commentaries.You present complex concepts in a way that makes them easier to understand. I just subscribed. Good job. 13 Beeyond Ideas Reply Mounika Pulipaka Mounika Pulipaka 1 year ago I love this channel!! Thank you for simplifying all this content. ❤ 4 Reply DeMoN X DeMoN X 1 year ago To be honest, i couldn't understand for 4 years , what you do in only 10 minutes. Worth Subscribing. ❤ 5 Reply The Mandinkan The Mandinkan 1 year ago Great educational video. Love the aesthetics of the editing! 2 Reply Rick Robitaille Rick Robitaille 1 year ago Unbelievable how Einstein could go that deep into his mind..a though experiment..a theoretical physicist like no other..by uplifting Newton's great work einstein seen to be create a quick worm hole to the then nascent quantum world..awesome story telling thankyou🇨🇦 8 Reply Brendan Fan Brendan Fan 2 weeks ago Great explanation, even i have seen many similar videos, but this one is one of the best. 1 Reply TheSoftwareJunction TheSoftwareJunction 1 year ago Finally I understood something about time dilation and gravitational lensing. Thanks man. 5 Reply neko7 neko7 1 year ago The explanation in textbooks and places on the web made me misunderstand/misinterpret what Einstein meant. Your explanation was clear. Thanks 💚 8 Reply mrpoopybuthole mrpoopybuthole 1 year ago He saved us few years of madness as we would have figured out in more than 1000 years without him 7 Reply Debabrata Das Debabrata Das 1 year ago Well, you have successfully explained relativity to me. Physics is interesting once more ! 7 Reply The Luci The Luci 1 year ago Holy shit 7:25 my eyes finally opened now I understand! I knew about light bending and I knew that despite the bend the speed is unaffected which is cool but what I JUST learned was from the way you said “time must slow down” then I clued in to gravity’s effect on light, speed, time is all connected! Finally I get it thanks. I watched so many of these and I’m aware of time dialation and all that stuff but I never seen such an easy visual representation. 32 Beeyond Ideas Reply Beeyond Ideas · 1 reply Mr Random Mr Random 5 months ago How can he imagine on that scale Holy cow 😳😳 1 Reply Firoz Khan Firoz Khan 7 months ago Excellent explanation Sir! Thank you so much for this! 2 Reply TuffKid Gaming TuffKid Gaming 1 year ago man your video quality is insane.. awesome story telling .. love visuals.. cant get enough of this .. love your videos 1 Beeyond Ideas Reply Cícera Tenório de melo Cícera Tenório de melo 13 days ago Quanto mais me aprofundo na ciência mais me aproximo de Deus.🥀✍🏼🙎 Albert Einstein 1 Reply S I N G Y E S I N G Y E 5 months ago Thank you for the wonderful video. Physics was one of my interest from childhood and the greatest scientists like Einstein, Newton, Planck hold no exception. Every time when I hear their astounding achievements that helped us to view the way the Universe functions , it always blows my mind. 5 Reply Christine LaBeach Christine LaBeach 1 year ago I wonder how many universes it took before one with just the right laws of physics for intelligent life to evolve? 21 Reply 5 replies Tiago Pereira Tiago Pereira 1 year ago Very well done! Congratulations. More videos like this. Thank you! 5 Beeyond Ideas Reply Robert Goss Robert Goss 1 year ago Clear, substantive and presented very well. Nice work! 3 Reply Nick Nick 5 months ago can you imagine seeing into the mechanics of the universe through your own imaginative reckoning??? 10 Reply sasuke’s bussy sasuke’s bussy 2 weeks ago (edited) Makes me really sad Einstein isn’t around to see just how much his theories changed our entire perception of the universe and science as it is today. 1 Reply sanat mohrir sanat mohrir 1 year ago Just discovered your channel its very informative. Keep the good work buddy 😁✌️ 3 Reply O Propagador da Real O Propagador da Real 1 year ago “What we mean by relative motion in general is perfectly clear to everyone. If we think of a cart moving along a street, we know that it is possible to speak of the cart at rest and the street in motion, just as it is to speak of the cart in motion and the street at rest. This, however, is a very special part of the ideas involved in the principle of Relativity. ” “It would be fun if we read this in a comic book journal, but when Professor Einstein says this in a lecture at Princeton University, we're supposed to not laugh, and that's the only difference. It's silly, but I can't dismiss the matter with this observation and therefore I will answer very seriously that it is only possible to speak of the street moving while the cart stands still - and believe - when I walk away from the whole experience of a lifetime and I am no longer able to understand the evidence of my senses; which is madness... Self-deception like this is not reasoning; it is the negation of reason; which is the faculty of drawing correct conclusions from the things observed, judged by the light of experience. It is unworthy of our intelligence and a waste of our greatest gift; but this introduction serves very well to illustrate the kind of illusion that lies at the root of Relativity. When he suggested that the street might be moving while the wheeled cart was standing still, he was asking us to imagine that, in a similar way, the Earth we are standing on might be moving as the stars pass in the night. stop. It's an Appeal Case, where Einstein appeals on behalf of a Copernican Astronomy condemned against Michelson's judgment - Morley, Nordmeyer, Physics, Fact, Experience, Observation and Reason. ” - Gregard Hickson, “Kings Dethroned”, p. 65-66. 29 Reply 2 replies science matters science matters 1 year ago I love how he explained I watched so many videos but this is the easiest! 2 Reply Afshan Zubair Afshan Zubair 6 months ago Brilliant! It is the first time that I understood the whole video completely. Moreover, if you are not able to conduct your learning in a simple way, you yourself didn't get it properly. - Einstein You are genius, you did it very clearly means you got it! 1 Reply Eaglehaslanded Eaglehaslanded 4 months ago The strange bit is that these concepts water never taught to us in school. Reply Liudas Norkus Liudas Norkus 1 year ago Wow it such a good explanation even we already know! Gravity it seems simple when we understand it now, but was amazing when Isaac found it, we need to ask ourselves a right questions! 2 Reply Human (Muslim) Human (Muslim) 5 months ago (edited) For some reason i feel like Einstein and Isaac Newton are friends from different era 2 Reply Nicholas Marino Nicholas Marino 1 year ago Hi, as are tired science teacher, this person gets an A+ for this video. Very well done. 6 Beeyond Ideas Reply muhammad shabbir muhammad shabbir 3 months ago Brilliant people like AE learned almost 50% science from nature and natural phenomenas. Only extraordinary people have this ability of deep observance. God gifted such souls to humanity to benefit us. 1 Reply CNOTE CNOTE 3 months ago Dude I just want to say that out of all the videos I have watched on special theory of relativity there was always a small part that I never understood from the explanation of other people and videos, and I just want to say that your breakdown solved that question that I've always been wondering.. or should I say wondering how it worked! So good job on that bro I am now a new subscriber! 3 Reply MUSCULAR com MUSCULAR com 10 months ago Damn that explanation is so simple but covers everything. Thanks man! 2 Beeyond Ideas Reply YOUSUF ALI YOUSUF ALI 1 year ago So simple so clear and yet deep 1 Reply Jerry G. Jerry G. 5 months ago Excellent video about Theory of Relativity. Thanks! 1 Reply Syed Uzair Raza Syed Uzair Raza 1 year ago Videos like these re-ignite my love for science. 5 Reply 1 reply Andrew hirschhorn Andrew hirschhorn 1 year ago Well stated explanation that space-time is called as such because objects in the universe warp the space around it and it also slows time down around it. It makes sense now. Objects warp time and space, in their backdrop which is an elasticized , responsive fascia of sorts , similar to the deep tissues (fascia) which hold bone muscle and organs in Place 1 Reply Alessandro Giolitti Alessandro Giolitti 1 year ago 4:03 In 1915 there were no laser beams. Difficult to think that Einstein could imagine the behaviour of such thing. Even if laser later derived from his work. It was just a light beam he thought about. 17 Reply 1 reply Shubham Singh Shubham Singh 1 year ago (edited) Actually, special relativity worked with accelerating objects (Rindler's Coordinates), but it doesn't account the fact that acceleration and gravity are the same things. In other words, special relativity does not account for gravity in a non-inertial frame but it works fine with an accelerating object, Rindler Coordinate is one such non-inertial frame of special relativity which deals with accelerating object without considering the gravity (or the Ricci Scalar). 23 Reply 5 replies lol whittingham lol whittingham 6 months ago Why am i so infatuated with this subject and trying hard to understand it? I am 70 yrs old, Hated school so much I' sagged off' nearly every day/week, never took any exams and left at 15. This video is very helpful. Many thanks. 3 Reply Pauwer Woman Pauwer Woman 11 months ago Super explanation! Thank you! I finally see the light💡😃 (although it may have a slight curve to it)😉 1 Reply Tong TV Tong TV 1 year ago I never get tired of watching videos About Genius Einstein. 3 Reply 1 reply Krishna Gupta Krishna Gupta 5 months ago Dear sir.. You explained in a marvellous way.. Hats off to you... Thank you so much sir 2 Reply ANURADHA BAIRAGI ANURADHA BAIRAGI 1 year ago Truly wonderful simplified explanation. 1 Reply Ryan Miller Ryan Miller 1 year ago Great video with excellent visuals. Looking forward to more. 1 Reply Weaver Ron Weaver Ron 3 months ago great video I love the way you explain it . 1 Reply Ricky J.C. Ricky J.C. 1 year ago I keep wanting to think another Einstein will change the world around us, but the nagging feeling I have tells me that isn’t a possibility. Feels like we are on the wrong course currently. Hopefully it will be corrected….soon. 2 Reply Rahul BK Rahul BK 1 year ago Best video on YouTube describing Einstein’s theories 8 Beeyond Ideas Reply DailyQuiz DailyQuiz 1 year ago Very simplied presentation. Hats off to you ❤️❤️ 2 Reply sohel japanwala sohel japanwala 1 year ago The best and simplest explanation I have ever found so far! Reply Scrotie McBoogerBalls Scrotie McBoogerBalls 2 weeks ago Best explanation I've heard so far. 1 Reply G11713 G11713 1 year ago The light path around the sun is problematic as it implies light is bent out and then around the sun, which cannot be what happens. Perhaps it's an inadvertent artifact of projecting 3d into 2d but it will confuse people. There are other minor issues but good work. Thanks. 1 Reply Spectrickx Spectrickx 8 months ago This goes to show how smart he was. Reply Maqsood Alam Maqsood Alam 1 year ago The best explanation so far on Theory of Relativity in plain English. 14 Beeyond Ideas Reply Mbah Donald Mbah Donald 4 months ago This really is an epiphany for me. Thank you Reply Kevin Gooniah Kevin Gooniah 1 year ago Your channel deserves much more subscribers......i am sure in the near future i will be congratulating your channel when this will happen! 1 Reply gh gh gh gh 1 month ago AMAZING VIDEO PLEASE MAKE MORE I FEEL SO ENCOURAGED AND FASCINATED 2 Reply Eternity Eternity 7 months ago Wow this video gives the best and clear explanation than any other videos on the internet about this topic..! Thank u 1 Reply shaunak das shaunak das 6 months ago The Best video explaining general theory of relativity found on YouTube yet 1 Reply Black Panda Black Panda 6 months ago Imagine if everyone of us worked together, how much we could accomplish like Einstein did but on scale x100 more efficient. Could probably solve most issues facing the world today. 5 Reply Prashanth Subir p Prashanth Subir p 1 year ago Beautifully explained 1 Reply I N E T I V A B L E I N E T I V A B L E 1 year ago He was naturally enlightened ... Chose to be born where science could prosper ... 2 Reply edwin mhlanga edwin mhlanga 6 months ago This young boy really changed life and made our academic life a hell 1 Reply Rex Yan Rex Yan 1 year ago Your explanations are the best! 1 Reply Nadav Korene Nadav Korene 1 year ago Keep up the good work! 1 Reply harpuia harpuia 1 year ago imagine being that intelligent, more than a hundred years ago, absolutely baffling to me 3 Reply Steve Smith Steve Smith 1 year ago (edited) In theory then, if you could accelerate enough to counteract the gravitational effect would you minimise time dilation? Or is the mass created by the multiple objects and therefore gravitational effect in you path having such an impact that you would have to speed up and slow down in relation to the mass and gravity of each fixed point? E.g. put two weights of different amounts on the trampoline and plot a path past them with the marble in a straight a line a possible without being drawn to them, you would have be traveling faster to pass the bigger mass to stop the effect of gravity right? 3 Reply 1 reply Job Region Job Region 9 months ago amazing lecture brother you have a very good command on your subject. 1 Reply bgram. bgram. 13 days ago Bro you explained this in such an easy way to understand 1 Reply gertwallen gertwallen gertwallen gertwallen 3 months ago Thanks Einstein, Newton, Maxwell, Galileo, Planck, Schrodinger, Heisenberg, Feynman, Gauss, but most importantly, thanks Diego Armando Maradona, the greatest of all. 2 Reply Robert stark Robert stark 8 months ago Well !!! Bravo for this explanation. Damn man, Today I got the theory of relatively & most important in space light bends & In Earth's gravity it doesn't.. Love it 🙌❣️ 1 Reply sourabh bakshi sourabh bakshi 11 months ago Einstein in a way was an enlightened being 3 Reply EliteTeamKiller EliteTeamKiller 6 months ago Special relativity can deal with accelerating objects. In Einstein's very first paper on special relativity he derives the equations of motion of a slowly accelerating electron in an electromagnetic field. 1 Reply Shoaib Nature Shoaib Nature 1 year ago Very good 🤗. Thanks Subscribed!!!!! I am watching science videos more than 6 years. I never stop. This video is very to the point. No extra or irrelevant points 1 Reply Satyam Vats Satyam Vats 1 year ago The man of the century, No doubt Reply Indraneel Palsapure Indraneel Palsapure 11 months ago this video made all my doubts clear. Thank you 1 Reply kor.E Reno. kor.E Reno. 1 year ago Hey I really like this type of science, I sub'd buddy keep up the interesting content 👍 1 Reply Chris Bevan Chris Bevan 1 year ago Imagination - is man's greatest tool. 4 Reply S Chapman S Chapman 3 weeks ago Einstein was heavily influenced by the British scientist Karl Pearson and in particular Pearson's book The Grammar of Science in which he has discussed both a relativistic view and also the space-time continuum. 1 Reply Ravi Singhal Ravi Singhal 1 year ago Thank you so much for this video...... Brilliantly explained 1 Reply ENGLISH TRANSLATION ENGLISH TRANSLATION 7 months ago Very good explanation indeed 1 Reply C Justin Toekes C Justin Toekes 4 months ago Beautiful explanation. Reply Jamil Ur Jamil Ur 3 months ago I am 16. I think how to pass my exam and this dude thought of chasing light 2 Reply Aleksandar Ilic Aleksandar Ilic 8 months ago When they asked Albert what it's like to be the most intelligent man in the world. Albert answered that he did not and that he did not know that, and that journalists should ask Nikola Tesla. Tesla introduced us to the 21st century. 4 Reply 1 reply Reece Eyles Reece Eyles 1 year ago Great video, well done 2 Reply Anush Hariharan Anush Hariharan 1 year ago Thank You so much. Very beautifully explained 2 Reply Prashant Dobhal Prashant Dobhal 11 months ago I liked the way you explained. 1 Reply B-Ri B-Ri 1 year ago Really digging this channel. Thank you 2 Reply Praveen Ranganathan Praveen Ranganathan 1 year ago Excellent video... probably best ... Can u please make detailed video of each of theory with explanation of how he derived... also he had to take consideration of length dilation.... please explain y 2 Reply Mayur Kharat Mayur Kharat 1 year ago Very Knowledgeable videos..Liked it 👍 3 Beeyond Ideas Reply grzech o grzech o 1 year ago great explanation - thank you very much, greetings from Poland 1 Reply Cosmic Kitteh Cosmic Kitteh 4 months ago Every calculus test had 10 to 20 questions every friday in my highschool. I could only ever answer 0-3 correctly without using any kind of formula.. just simple math and my brain. The teacher one day decided to announce that someone is able to get some answers right without showing work; But that it was weird because she didn't think they was cheating as they had simple math on every question but none of the others was correct stating afterwards "why would you cheat for only one question you still would fail" I knew she was talking about me so I raised my hand and asked if she was referring to me. She smiled and said yes. I'm guessing she was saving me from the embarrassment of failing every test like I did; But I didn't care and was open about how much I hated math. Reply Xerneas 23 Xerneas 23 5 months ago I want this vid never to end 1 Reply Meena Upadhyay Meena Upadhyay 1 year ago You deserve millions and millions of subscribers.... 2 Reply Johnny Betancourt Johnny Betancourt 1 year ago Great explanation! 1 Reply Larry Menasco Larry Menasco 1 year ago How could Einstein have “thought” about pointing a laser beam when lasers were invented after his death? 13 Reply 9 replies Aaron Reiss Aaron Reiss 1 year ago This is the first video where I actually am able to understand relativity and it is 1:30 AM and now I cant sleep 1 Reply Uurkubaalle Uurkubaalle 2 weeks ago In the universe, if a light has to be generated by specific stars, objects or so then darkness is the dominant presence and light is the only smaller temporary thing in generated form. Regardless of how much we consider the sun and other stars permanent, it is still logic to say any generated thing is temporary and is gonna come to an end as it came to begin in certain point. I would use the term duration instead of time which is not meaningfully not that different in most or all cases. Beautiful to watch and appreciate his contributions along with all great minds of past, present and future. Reply Bowi Bowi 1 month ago What a brilliant mind! Reply Yes Family Yes Family 5 months ago (edited) Chasing the light was because Albert Einstein wanted to chase the day of the sun. This would have been a child’s point of view. 1 Reply Dan Conser Dan Conser 1 year ago Well done. 2 Reply Vidy Saras Vidy Saras 1 year ago Another knowledge to consume this morning! So cool! 🕵🏻‍♀️👩🏻‍💻❤️ 19 Beeyond Ideas Reply onlythewise1 onlythewise1 3 weeks ago the problem is if energy's are so small and undetectable then we dont know what is really happening as they couldn't believe there was mini bacteria until they found them just twenty years ago so we maybe haven't found the smallest energy smaller than quarks or photons 1 Reply DasItMane DasItMane 3 months ago Einstein was able to visualize his theories before putting them down as equations. The next Einstein will either have that same ability or will simply have done tons of lsd. 2 Reply norenemies norenemies 1 year ago clear explanation and great video 2 Reply Beeyond Ideas · 1 reply M.A. K M.A. K 10 months ago I had to pause a few times to let it absorb. Thanks for the explanation! Reply kishan Agarwal kishan Agarwal 7 months ago Thanks for lucid explanation. 👍👍 Reply Speed Edits Speed Edits 1 year ago Cool animations! Loving the thug life Einstein 😆 63 Beeyond Ideas Reply روناء سعد ابوطالب روناء سعد ابوطالب 3 weeks ago Thank you very nice explanation ❤️ Reply ravi n ravi n 1 year ago I am able to understand "Theory of Relativity" and "space-time" now. 1 Reply HELIFY NOE HELIFY NOE 5 months ago One thing that I find odd, is that if you analyze motion to figure out what it is, you soon discover the cause of the Special Relativity(SR) phenomena, and at the same time you derive the SR equations. What is odd about this, is the fact that it is so easy to do such a thing, but few have done it. You don't even have to have any physics education to be able to do this. In fact, the less you know about physics, the easier it is to do. Reply 1 reply xcloudx01's Alt Account xcloudx01's Alt Account 3 months ago The experiments conducted by Sir Arthur Eddington to prove Einsteins theory is fascinating of it's own sense. Afaik there were several failed attempts to capture this solar eclipse because it was just so damn hard to do so. This video covers it: https://youtu.be/HLxvq_M4218 2 Reply Fake smiles Fake smiles 1 year ago Imagine what if Everyone becomes intelligent like these super humans... How far can we go? .... Not possible to imagine..... 2 Reply Monarita Dash Monarita Dash 1 year ago Education is the manifestation of Perfection 6 Reply 91lovemusic&sports 91lovemusic&sports 9 months ago Omg thanks for this video 🙏 I want to understand more😊 Reply M L M L 11 months ago He didn't change the world... he made people think different 1 Reply 1 reply Mohammad Hasan Mohammad Hasan 1 year ago Deserves more subscribers 👍👍 1 Reply LockHändle ❶ LockHändle ❶ 5 months ago This is one of the top 5 videos on Einstein on YT. Reply neyney neyney 1 year ago (edited) Was there laser in 1907 ? By the you have the best explanation for times slowing down , in every where I have seen , can even say better than Brian greener . Well done man 1 Reply 1 reply leccy leccy 1 year ago I wish we could clone copies of Albert, imagine what 50 or 1000 of him could achieve in there lifetime. He was very intelligent, but beyond that his imagination was amazing. I sometimes wonder what other ideas he had in his head, and if he could use all the current data we now have what he could come up with. 3 Reply Fatima Lmasri Fatima Lmasri 10 months ago Ur content is extremely underrated , im in love 😍 1 Reply 21M42 Rg Pandey 21M42 Rg Pandey 1 year ago Genius ❤️ 1 Reply Prabhakar V Prabhakar V 1 year ago Very nice and informative 1 Reply George V Prochazka George V Prochazka 4 months ago First explanation that I can understand ! Thanks 1 Reply Karunathilaka Abeysekara Karunathilaka Abeysekara 1 year ago Very good explanation 2 Reply CJRock CJRock 11 months ago (edited) 200 years passed from Newton until Einstein explained gravity, thanks to the work of many other physicist in between. Will it take 200 years for Einsteins quantum to be explained. We're already passed the 100 year mark. 3 Reply 3 replies Randy Foss Randy Foss 1 year ago I'm not a scientist, but I like science. I've heard that based on measurements, the universe is flat. I've also heard that because we cannot measure beyond the observable universe, it might not be flat. That makes sense to me if the universe started in the Big Bang. If gravity bends spacetime, then the matter, in the beginning, must have bent it but gradually straightened it, yet never perfectly because there was no matter until it came into existence unless there was already a prior universe into which it exploded. Even then, how many prior universes could there be requiring a big bang of themselves unless, at some point, an infinity of unbent spacetime existed without matter and energy in some way? However, I've heard no discussion of that. It's puzzling and someday we might get an answer, maybe? 1 Reply afnan khan afnan khan 2 months ago I feel truly amazing just coz i can understand........ 1 Reply Petro Ciruna Petro Ciruna 2 weeks ago Excellent explanation 1 Reply Ghost of the Universe Ghost of the Universe 3 months ago Hello. Thank you for the video. To test the modern theory, Michelson Morley's experiment gives the necessary results by 50%, with the experience of Zhavlan MASER, you can get all 97%. The Michelson-Morley experiment should use a solid-state continuous MASER, developed in England in 2018, as a light source. This experience can be used inside the vehicle while it is moving to determine the vehicle's speed relative to the DGF of the Earth's dominant gravitational field. The installation will almost also work as a traffic police radar, that is, the results will exceed the interference… 1 Reply The Explorer The Explorer 6 months ago I Think Einstein Could Imagine A New Colour 3 Reply Ajay krishna A Ajay krishna A 1 year ago 7:43 There is a mistake: Time moves slower for astronauts on ISS, not for us on Earth. 6 Reply 2 replies z z 5 months ago (edited) BLows my mind since i was 16 and i am now 42, the fact that time is slower near big mass is just something i cant grasp and i now know i´ll never be able to really understand it, i mean, i can on a paper but can´t really think it. 1 Reply 1 reply Drake Mitri Drake Mitri 4 weeks ago This is the first time every discussed made sense. I loved the trampoline experiment it helped me sooo much to understand what was happening!! 2 Reply Raisul Shishir Raisul Shishir 1 year ago Dammit! U kidding me? This channel is soooooooooo underrated! 2 Reply Rockz Rockz 1 year ago Can't say anything rather than "underrated YT channel" 2 Reply Electro BGM Electro BGM 6 months ago The same light beam tech use in James webb telescope also 😀 thanks to sir einstein 🕴️ 1 Reply Sandeep Ozarde Sandeep Ozarde 1 year ago Dr George Gheverghese Joseph from The University of Manchester says the 'Kerala School' identified the 'infinite series'- one of the basic components of calculus - in about 1350. The discovery is currently - and wrongly - attributed in books to Sir Isaac Newton and Gottfried Leibnitz at the end of the seventeenth centuries. The team from the Universities of Manchester and Exeter reveal the Kerala School also discovered what amounted to the Pi series and used it to calculate Pi correct to 9, 10 and later 17 decimal places. And there is strong circumstantial evidence that the Indians passed on their discoveries to mathematically knowledgeable Jesuit missionaries who visited India during the fifteenth century. That knowledge, they argue, may have eventually been passed on to Newton himself. 3 Reply 1 reply irfan lone irfan lone 2 months ago Albert Einstein is the only physicist in the history of Science that can be compared with Isaac Newton~Stephen Hawking! 1 Reply jovam kw jovam kw 1 year ago i love it 😍 1 Reply George Will George Will 1 year ago Wow, your channel ROCKS! 1 Reply Beeyond Ideas · 1 reply Rod Rod 1 year ago (edited) I have a question... Imagine two guys named John and Ken have the same life span of exactly 75 years. John has been living near the sun and Ken has been living in space afar from any massive objects. If John has been living near the sun without being affected by any health issues, he would still get that 75 years of life. And Ken would also get 75 years of life. But Ken would die earlier than John, because time is not abolute. question: is this right? 1 Reply 1 reply Binod Binod 1 year ago Why this channel is not in millions? 🥺 2 Reply Sandeep Ozarde Sandeep Ozarde 1 year ago Ancient Indian mathematician Bhaskaracharya, in his book Siddhanta Shriromani, had defined laws of gravity in 12th century, 500 years before Newton defined them for us. The speed of light was known to Indians since Vedic period, centuries before it was calculated by the Western world. 8 Reply 7 replies christhoper valentino christhoper valentino 1 year ago You deserve more subscribers!!! 1 Reply Joe Nahhas Joe Nahhas 8 months ago As an example: A telescope watching the Moon reveals that the moon reflects light and does not move, and the 27.321 days of the moon actually are the sun’s cycle, and the error is Newton and Einstein 1 Reply Warsame Jama Warsame Jama 11 months ago imagine you're in the class And einstein next to you 2 Reply K. Elboubbou K. Elboubbou 1 year ago Just fascinating📵🔦 Reply MQ MQ 1 year ago cool bro, very informative 👍🏼 2 Reply Beeyond Ideas · 2 replies apondo100 apondo100 1 year ago (edited) Interesting, but imo you need the explain what time is, simply saying time slows down does not really give the viewer an understanding of what that means 3 Reply 2 replies Adn Ben Adn Ben 1 month ago I love the idea of dilatation time amd the curve of the light. Even I am not physician or astro physician but I know the physics of the space out of earth atmosphere is diffrent Reply anthony collins anthony collins 8 months ago best explanation for them subjects i have heard in ages, 1 Reply Haider Kazmi Haider Kazmi 2 months ago first time i actually understood the theories ..greattt 1 Reply dasun wimalarathna dasun wimalarathna 1 year ago Great job❤️❤️❤️❤️ 1 Reply SUPREMO SUPREMO 1 year ago New subs here. Love your content men♥️ 1 Reply Beeyond Ideas Beeyond Ideas 1 year ago (edited) Visit https://brilliant.org/BeeyondIdeas/ to get started learning STEM for free. The first 200 people will get 20% off their annual premium subscription. Hope you guys enjoy this episode. Comment which topic we should cover next in our video. See you guys around! 180 Reply 39 replies Bendy Bruce Bendy Bruce 4 weeks ago Einstein videos never get old. 1 Reply Global Digital Direct Subsidiarity Democracy Global Digital Direct Subsidiarity Democracy 6 months ago Einstein was great because he figured out later that reality was an illusion. Science has kind of shown that only recently but you can figure it out with relativity and logic alone. 1 Reply Your Video Hub Your Video Hub 1 year ago well explained 1 Reply GAM3R5 N3V3R D13 GAM3R5 N3V3R D13 7 months ago Really great presentation,soothing not soo loud voice and cool bgm's Reply meghna baskar meghna baskar 4 months ago me watching this to figure out how to get a research idea 1 Reply Ricky Christie Ricky Christie 1 year ago This video has a lot of armchair non-physicists spouting nonsense in the comments lol 7 Reply 1 reply Yarrabhumi Sainathreddy Yarrabhumi Sainathreddy 1 year ago (edited) I think maybe the acceleration due to gravity increases the speed of light so it get bent and reach the destination in least possible time.Of course u are going to say the speed of light is constant.But how can it reach it's destination in same time if the distance get increase through the bented path? 1 Reply 1 reply Gaming Noobie Gaming Noobie 1 year ago after a long time i understand the whole concept in a online class Reply NEERAJKRISHNA K R NEERAJKRISHNA K R 1 year ago Best channel❤ 1 Reply Nico Niemeyer Nico Niemeyer 1 year ago I love einstein I consider him the greatest role model for using imagination that thing deep supreme within our brain that can make visions into reality! 1 Reply Monika Ramani Monika Ramani 1 year ago This video also solves problems of interstellar viewers or Time dilation 1 Reply Rhamia Jordan Rhamia Jordan 1 year ago We person can study this type of thing but usually god has all the perfect answer. 4 Reply KiLLA CAiN KiLLA CAiN 1 year ago Does the frequency change as the planet decreases in its spin? Reply DEEPAK KAPUR Virtual Class DEEPAK KAPUR Virtual Class 1 year ago There are theories that speed of light might vary in inter-galactic space... Might be wrong, just heard from somewhere.. 1 Reply Nikolay Tonev Nikolay Tonev 1 year ago Superb video! 1 Reply David Boateng David Boateng 7 months ago Einstein was a mad genius...too bad he couldn’t use all this on himself.Else he would’ve been the first Superman or flash 1 Reply Dale Caruso Dale Caruso 4 weeks ago My theory of relativity is I need more time and space away from my relatives. 1 Reply dave z dave z 1 year ago (edited) 7:29,light in gravitational field travels at the same amount of time as in vacuum. Well, that is an assumption. Why can’t it travel with minimum energy losses, not in shortest of time duration? Even it travels in shortest of time, why can it travel in a path with the shortest of time under circumstances of gravitational field itself, not to be the shortest compared with vacuum? Take another step back, due to space time curvature, AB points are not the same AB points at gravitational field any more. Also, time dilution is defined as an observer in a slower reference frame measuring a faster moving object. So time dilution is from outside observer. But now light travels with time dilution without observer as long as it is in gravitational field. Well according to Relativity, t=0, clock stops, if travels at speed of light. Even so, it needs double time dilution, because it not just travels longer path also travels slower in gravitational field, which is not in vacuum. 4 Reply Sha The OT Sha The OT 2 months ago It’s like lookin at a full built plane from the outside , and from imagination come up with a very accurate theory on how to build it , now take that and times it by 10 Reply Apsteronaldo Apsteronaldo 5 months ago Great exposition 1 Reply Eaglehaslanded Eaglehaslanded 4 months ago Fantastic video. Reply Ken Davis Ken Davis 5 months ago Here is exactly what Einstein thought of rekativity: one hour of digging a ditch is a lot longer than one hour spent with your girl friend. 1 Reply cyb3r kitsun3 cyb3r kitsun3 7 months ago Since a human was able to think of it doesn't that imply that our minds have quantum properties? Reply aCambridgePoet aCambridgePoet 1 year ago He was a genius, I'm sure it was RELATIVELY easy... Come on, come on, that was excellent. Where are my likes? 5 Reply Sky Darmos Sky Darmos 3 months ago Mercury’s orbit would jiggle anyway, it is about the amount of jiggling. When applying Lorentz/Schwarzschild, then there is twice as much jiggling. 1 Reply Gabe M Gabe M 1 year ago You got it backwards, faster moving objects experience time more slowly than slower ones. Michio Kaku even did a show on this. Please include your sources in the description. 1 Reply 1 reply TheHoodGuru TheHoodGuru 1 year ago Great video. 1 Reply Kunal Deb Barma Kunal Deb Barma 1 year ago Mankind does stand on the shoulders of these giants to make great leaps forward 1 Reply Kalinya-Chris Ampere Kalinya-Chris Ampere 1 year ago New subscriber. Thanks for sharing. 1 Reply Rainy Yumkhaibam Rainy Yumkhaibam 1 month ago these visual representations are showing space as 2D structure where a sphere bends it, i can't seem to imagine wrapping a 3 dimensional space though Reply George Qualls George Qualls 1 year ago I am always bothered by the trampoline example as gravity is acting on the weight and the ball. 1 Reply Sagar Ranga Sagar Ranga 1 year ago Genius ( maybe beyond ) for a reason. 2 Reply E Watching E Watching 1 year ago Me : understanding the video and feeling like I'm at par with Einstein 😂. Meanwhile ion know shit abt maths😂 1 Reply Ali M Maqsa Ali M Maqsa 1 month ago awesome explination 👍 Reply HMQ HMQ 1 year ago So Einstein invented the idea of a space shuttle 1 Reply Yash Chincholikar Yash Chincholikar 1 year ago At 3:03 won't we weigh double when a spaceship moving upwards with 9.8m/s2 ? 1 Reply kilroy987 kilroy987 1 month ago People might be able to apply Einstein's theory, but he was the one who extrapolated its aspects from what he already understood, and the mental thought experiments he conducted. Reply Study account 1 Study account 1 1 year ago (edited) 4:03 How he could have thought a out Laser beam if they weren't even invented untill 1960 1 Reply 1 reply Cesar Omiste Cesar Omiste 6 days ago 7:45 you missed something here, in fact time on the ISS (in Earth orbit) is actually elapsing slower, not faster than time on Earth. The reason for this is b/c Special Relativity (SR) also has a time dilation effect which is different from General Relativity (GR) gravitational time dilation. In SR, time dilation results in slowing down time for observer in motion (ISS) relative to other (on Earth). Both dilation effects go unnoticed b/c, the difference and strength in gravity (spacetime curvature) is not significant enough between Earth and orbit of ISS and the speed of ISS motion is still only a fraction of speed of light. In the case of the ISS, the effect of time dilation from SR and GR counter each other and after you do the calculations from both theories, you find a greater time dilation effect on the ISS from SR, hence overall time will slow down. 1 Reply Ajay Ch Ajay Ch 10 months ago yess..if a field of higher gravitational force time runs slower..so as you move away from a planet time runs faster..But I think time in iss runs slower than earth as it is moving with higher velocity. 1 Reply Mavlan Yasin Mavlan Yasin 1 year ago excellent illustration 1 Reply Mrs. Beast Mrs. Beast 1 year ago (edited) I don't get the source of his thinking that light in space would bend but not on Earth, i mean just how he supposed that? Although the a in space craft and g on Earth are same and later he suggested that maybe a curvature was present in space but how he suggested the bend before that man!? However he suggested it right, what a legend! 2 Reply 1 reply Amandeep Singh Amandeep Singh 8 months ago I m Lucky I learned this from you thank you 1 Reply K M Rao K M Rao 4 months ago Presentation is brilliant and simple to understand this complex phenomenon 2 Reply Bill Bill 2 months ago Did you ever stop and think about how GOOD the German school system of the early 20th century must have been? Einstein, Heisenberg, von Braun and so many more. 1 Reply twice ff twice ff 1 year ago Sir next video: arrow of time ❤️ 2 Reply Beeyond Ideas · 2 replies Aninda Sircar Aninda Sircar 4 months ago very paradigm and genius mind Reply Qui Nguyen Qui Nguyen 1 year ago Hi, love the video. What I don't understand is that at 6:58 mark, isn't the laser beam between point A and B supposed to curve to the direction of the sun due to gravity? 1 Reply 1 reply Fareed Ezzedeen Fareed Ezzedeen 6 months ago The only way I can think of how he came up with his theory is "It is a Revelation from God" nothing else can explain that. 1 Reply Muhammad Muhammad 10 months ago 4:30 isn't light beam still straight! just rocket moved up right? 1 Reply Posteuca Daniel-Marcel Posteuca Daniel-Marcel 4 months ago (edited) For you it feels like this, for me it feels like that; but its the same word we are talking about! Boom Relativity.Just so we can say ,,i can relate to that shit." AKA ,,i feel ya bro."!!! Reply The Lord A The Lord A 8 months ago I DON'T KNOW WHY but I love your videos Reply Abhijeet Singh Abhijeet Singh 2 months ago So here the warping of Space-Time Fabric is bending towards the pole of the earth. But if we dig a tunnel from one pole to another of the earth(hypothetically) then we experience gravity towards the centre of the earth while moving from one pole to another. So how do correlate bending of space time fabric and the gravity that we experience and what the planets experience? Reply Beena Plumber Beena Plumber 11 months ago Massive objects cause a curvature of spacetime. Why? Because Einstein says so? How does that work? We know it happens, and we can easily measure it, but I have never heard an explanation of the mechanism by which mass influences the shape of spacetime. In this video, it has to happen to avoid violating the universal speed limit. I get the relationship, and I've watched too many videos that describe the relationship. I want to know how it works. Anyone know? 2 Reply 2 replies Fatai-Ayoade Yusuph A. Fatai-Ayoade Yusuph A. 1 year ago Great. I am EINSTEIN addict. Nice video! 1 Reply Electro BGM Electro BGM 6 months ago Einstein and Tesla are the visionary of world they both make decisions on brain before going into practical 1 Reply Jose Morales Jose Morales 4 months ago loved the video 1 Reply Aasaimani S Aasaimani S 1 year ago Excellent explanation ❤️.But the trampoline analogy is misleading. A better animation is available in YouTube channel Scienceclic English about warping of space-time. 1 Reply Lee McLoughlin Lee McLoughlin 3 months ago Einstein did not think of relativity. His theory was a compilation of other scientist's work: Hendrik Lorentz, Albert Michelson and Edward Morley. It is no accident that Einstein did not receive a Nobel prize for his theories on relativity. The Nobel prize that Einstein was eventually awarded is one that he practically begged for and was for his discovery of the photoelectric effect. 1 Reply gravy boat gravy boat 1 year ago TV quality video 👍 Reply ǝʌǝʇs uʍop ǝpısdn ǝʌǝʇs uʍop ǝpısdn 1 year ago If and when you have a big and smaller object circling it. Eventually they will collide. The force of the sun is what does keep them from colliding. If you have a strong magnet and draw a candle close to the magnet the force of the flame will actually push away from the magnet not wanting to touch it, but the flame will bend until it has to touch the magnet. It will not leave it's source of energy and eventually will come in contact with the magnet but if the flame is stronger than the force of the magnet it will keep it pushing against the magnet and actually push it away. The combustion of the sun is what will keeps the planets from colliding into the sun 1 Reply Nick Harrison Nick Harrison 1 year ago can you explain how objects like earth, sun bend space ? 2 Reply 8 replies SUN1GOLDN SUN1GOLDN 4 months ago The more dense an object (piece of matter) is, the more it warps space-time, that's why one who is within matter can experience time. Matter is compacted energy and the more compacted it is, the more dense it becomes therefore whatever lifeform experiences within that dense matter, seems to experience slower time. The Physical Dimension. Reply lia lia 5 months ago on a small scale though, we use newtonian physics. the reason newtons physics dont work is cause according to him, gravity is instantaneous, but nothing can travel faster than the speed of light. einstein however, allows as to draw the spacetime geometry, proving that the universe is dynamic and thus works well with the big bang theory Reply Yahoo! Yahoo! 1 year ago Thanks sir for the Vedio !! 1 Reply JanPBtest JanPBtest 7 days ago 2:18 Special relativity does apply to accelerated objects and observers, just like Newton's theory does. 5:45 This "model" only creates confusion as it explains gravity by... gravity: it cannot work without the Earth underneath. I remember seeing this "explanation" in a pop-sci book in high school and being completely befuddled by it. The correct explanation uses spacetime curvature (which is what Einstein's theory is about), not space curvature. Only then the theory makes sense. 7:10 It actually does take a longer time, it's called the Shapiro delay. The argument that it should not be so because special relativity says the speed of light is independent of the frame of reference is incorrect: the special theory says it's independent of the inertial frame of reference. So in general relativity the speed of light at a distance need not be constant. The most extreme example of it is a photon hovering at the horizon of a black hole: it's at rest with respect to a distant stationary observer. Reply Eleonora Eleonora 1 year ago Кога стоиш на работ од нашата галаксија, само со еден скок можеш да стигнеш до работ на другата галаксија, исто како што скокаш река со еден чекор. Тоа е галактички скок, ако паднеш во реката те носи во друго време, тоа е патување низ времето. Reply Eugene Eugene 4 months ago Hi, I thought that mass affects the straight path that matter travels through space time rather than matter falling to the earth. Gravity is an illusion, there is no gravity. Please can someone clarify? 1 Reply the world through my eyes the world through my eyes 1 year ago Albert looked up at the sky and thought to himself... Im going to make loads up about space 1 Reply Paul Atreides Paul Atreides 10 months ago good one ! 1 Reply jack daniels jack daniels 1 year ago I wonder if Einstein ever wondered if his eyes created the bend in the laser ND not gravity or acceleration 2 Reply 1 reply Gabriel Gabriel 8 months ago So why have we not fallen into the sun? 1 Reply Sky Darmos Sky Darmos 3 months ago “Gravity is the reason the universe exists” is just a clever sounding claim by Hawking. It relies on a close universe. It can now be dismissed as 100% wrong. 1 Reply Time Factor Theory of Gravity and Relativity. Time Factor Theory of Gravity and Relativity. 1 year ago Einstein originally thought of Time-Space but conceded that Space-Time is easier to understand. Time-Factor-Theory. Click the big T to the left! 1 Reply Debajyoti Roy Debajyoti Roy 5 months ago Very very good channel... Reply 157 157 (James Henderson) 157 157 (James Henderson) 7 days ago If light reflected by the interior of a moving vehicle would increase in speed if it weren't for time dilation then why shouldn't this apply to light reflected by the exterior of the vehicle and time everywhere outside the vehicle [and, therefore, is time relative to speed?] and if time 'slows down' inside a moving vehicle would sunlight entering its interior and not having been reflected and 'sped up' by its surfaces not be caused by the dilation of time inside the vehicle to slow down to a speed below 'the speed of light'? How would length contraction of a moving vehicle mean that light reflected between its floor and ceiling would not still have to travel non-perpendicularly/'diagonally-zig-zaggingly' in relation to the direction of travel/floor/ceiling which would mean that light would still have to exceed 'the speed of light' as it travelled a longer route between a point on the floor of a moving vehicle and the exactly/perpendicularly adjacent point on the ceiling, wouldn't it? Reply Ben Ben 5 months ago So light is effected by gravity? 1 Reply David Hine David Hine 11 months ago Best way to "fix" Hubble's Constant is with following equation from "The Principle of Astrogeometry" based on Maxwell's Aether equations 2 X a Mega parsec X C, divided by Pi to the power of 21 = 71 K/S/MPS. All you need to know are values of Pi, a Parsec, & C (light speed). NOTHING else required!! 1 Reply daz knight daz knight 6 months ago The general observation of the world around you and the action and opposite and equal reaction to speed time and distance and charting such relativity on charts to demonstrate the so called law of relativity. People very rarely seem to even recognize the world around them these days as opposed to knowing and understanding how things work and why to have things better suit you through your life here. Do you not agree? The space and time continuim, as that all you have is time. Archangel Michael 2 Reply Aviation life by Devashish Aviation life by Devashish 4 months ago Scientists making new discoveries today realize Einstein was right all the way. 1 Reply Χαραλαμπος Στρογγυλος Χαραλαμπος Στρογγυλος 1 month ago For Newton, the source of gravity interaction, is the mass, and please do not lay that Newton isn't telling that. In the Coulomb law, the electric force source is the charge, please do not say that Coulomb didn't know! 1 Reply Yarrabhumi Sainathreddy Yarrabhumi Sainathreddy 1 year ago How could the gravity affect the time of light? 1 Reply 2 replies Sumant Prajwal Sumant Prajwal 1 year ago Laws and principles of universe is applied only on physical objects with mass/energy and gravity. The Consciousness which discovered these laws/principles and itself is actually beyond all laws/principles and it is eternal and infinite without beginning and end and source of the spacetime. (Personal hypothesis) 1 Reply Patrick Montgomery Patrick Montgomery 1 year ago Hmm. It's interesting, but I'm sure I believe it. Why did Einstein "think" that the light in the accelerating rocket would hit the wall lower? The theoretical concept of time-dilation and timespace is weird. For example you say @7:37 time moves slower or faster near heavy stuff suggesting time "is moving" and clearly time does not move it has no dimensions. We just choose to hang the word hours or seconds on it to describe a journey, or day light hours etc. So, with that in mind, I think the mathematics was developed to fit a weird notion and that enables one to give rise to a whole "imaginary" World/Universe on paper - but luckily mathematics is not tangible - so no harm done. 2 Reply 2 replies Sebastian Cavanaugh Sebastian Cavanaugh 1 year ago I get what you're saying but I still don't know how he came up with them or the train of logic between them 1 Reply Tim Hensley Tim Hensley 1 year ago Every few hundred years the either advances our knowledge of the universe. We advance based on our ability to understand what we are given. 1 Reply Franco Franco 1 year ago Sad that we don't have people like this, that discovered and changed alot in history. People today idolize ho#$ and killers. 1 Reply RER RER 7 months ago Not really though. Like 2 years after he published what is not called relativity, Einstein's own math professor Minkowski published what is basically now General Relativity. Einstein famously said he did not understand it. Fortunately for Einstein, Minkowski died suddenly and everyone forgot about him. Einstein then spent 8 more years trying to figure out Minkowski's work and basically published it as General Relativity. So Einstein was great yes, but General Relativity was not his thing in any real way - Einstein was forced to accept it against his will. Reply Sami Najafi Sami Najafi 1 year ago I'm really trying to understand but I have still difficulties. It's perfectly fine that light travels the shortest path in space, but maybe light photons are be influenced by the gravity as an 'actual force' and not a curvature in time-space. Viewing from this angle, I can't yet see how the Gravitational Lensing proves the correctness of Einstein's theory and refutes that gravity is not a force... 🤔 1 Reply 2 replies Pat Bonde Pat Bonde 9 months ago How about the oscillating universe Reply Matter as Machine Matter as Machine 1 year ago Everything is much simpler. But humanity loves complexity unfortunately Reply Pranjali Pranjali Pranjali Pranjali 9 months ago (edited) 3:38 it seems that it should be weight not mass