How does time curvature (not space) create an illusion of gravity?

In this video, we will explore why the curvature of time, and not the space, produces the illusion of gravity. We will also understand how the same time curvature allows the ground to accelerate up without the earth having to expand.

[keemo]

Best description ever. Feynman would be very proud of you taking on his legacy of translating comlicated theories to us simple minded folks. Keep it up.

[RussellSubedi]

That Ryan George reference was TIGHT !!

[elsyiyg]

I don’t usually leave comments, but I have been loving your channel for science videos. No joke, I gasped and paused the video at 17:30 and had to take it all in. I know it’s science and physics and all that, but things like this truly feel magical.

[musicalfringe]

This is the first time I've ever seen someone point out that the rubber-sheet analogy uses gravity to explain gravity. Kudos.

[scienceisdope]

I dunno how you do it, Mahesh, but with every video, relativity becomes clearer for me. I can also see why Einstein called it the special theory. And this, the general theory.

[nukulator]

This channel deserves so much more recognition than it gets. Your videos are amazing!

[francoisnadal]

I'm teaching my 10 years daughter about space time.. And she gets it, naturally, intuitively, she is even one step beyond of my explanations, every litle time. And what you are doing here is absolutely amazing, you're helping people being better in their everyday life because they understand where they live, how things work. Thank you 1000 times 🙏 you're brilliant 😉 (yes we are a subscriber) and you must be as many smart people are, a kid with big dreams.

[faisalkhatri]

I have been around on YouTube for years watching science videos. Coming across your channel feels like a blessing to me. There are so many famous YouTubers with all those animations but they lack simplicity and a good flow of information. What you are describing is one of the most complex subjects in physics to understand. The way you do it is.. (ran out of vocabulary)
This is where I press the bell icon.

[autodoctordr]

This is also why I prefer a different illustration of general relativity, showing space and time curvature as a distorted 3 dimensional grid, where not only are the grid lines distorted around the massive object, but the grid lines move inwards over time

[tripat_singh]

I am in class 6 ( 7th soon exams are over ) and i absolutely love your channel and videos. You are the reason I love physics more than anything else. You also motivated me to learn higher level maths in order to understand physics and... it's beautiful BUT NOT MORE THAN YOUR EXPLANATIONS!! Thank you for everything Mahesh sir.

[anonymes]

I'm not big on blowing smoke up you know where in comments but this is easily one of - if not - _the_ best physics channels on Youtube right now IMO. Simple but so well thought out.

So, y'know, basically, thanks :).

[DxvidEisboerg]

I think that the 7 dislikes are Newton with 7 alt accounts

[skhotzim_bacon]

*This Video Contains Various Misconceptions*
In response to the video titled "How Time Curvature (Not Space) Creates an Illusion of Gravity, " it's crucial to address the misconception perpetuated about the relationship between time dilation and gravity. This misconception stems from misinterpreting a coordinate transformation in general relativity.
It's crucial to first distinguish between relativistic time dilation and gravitational time dilation. The former is observer-dependent and occurs due to relative motion or gravitational fields, while the latter is an inherent consequence of spacetime curvature caused by mass and energy.
Contrary to the video's claim, gravity is not an illusion caused by time dilation. Instead, it's the curvature of spacetime by mass and energy that truly shapes gravity. This understanding aligns with the principle of causality: gravity arises from the presence of mass and energy, leading to spacetime curvature, which, in turn, manifests as gravitational effects such as gravitational time dilation which is a result of this curvature, not its cause.

it's not just the proximity to the Earth's center that causes time dilation but rather the gravitational potential. This means that time runs slower in stronger gravitational fields, regardless of altitude.
It's essential to correct this misconception and spread awareness about the genuine mechanisms behind gravity. By debunking myths and understanding the true nature of gravity, we can foster a more accurate understanding of the universe.

[mawallet]

Finally, a physicist who can explain things using better models. I was always so confused by the two dimensional time/space description. Your cone makes so much more sense!

[IPWCsInTheory]

This has become my new favorite channel rather quickly. This dude's analogies are perfect.

[kashemvai]

The thing I like the most about your channel is that you ask and answer the most critical of questions that NO OTHER content creators are doing

[comicdragoon]

Ive been studying this stuff on my own time for over seven years, and this is by far the most intuitive video explanation I've ever seen. It's been extremely helpful to lock intuition and be able to better explain for friends who are interested.

Thank you for everything you do, and long live first order discovery!

[brettvanwey]

Ahhh so the reason I’m balding, yet my toes just keep getting hairier, is because my head is older than my feet.

[ChrisGlenski]

This is your best video yet! Literally the clearest explanation of curved space time I have heard, I can’t wait to share this to someone

[firasmaaroufi]

This video is a masterpiece. I enjoyed every second of my proper time. I've seen so many videos on spacetime curvature, but yours is by far the most satisfying one, thank you very much.