All Questions
14
questions
2
votes
1
answer
68
views
Understanding Wormholes Geometrically
Is the folding sheet analogy really that good for understanding what a wormhole is? After all, space-time curvature doesn't require any ambient space (it's intrinsic), as such a picture would suggest. ...
- 323
9
votes
3
answers
6k
views
Why is Spacetime described as flat even though we live in 3 dimensions of space?
I’ve always heard and seen diagrams that show spacetime as being “flat” or in 2 dimensions with curvature. How does this correspond to the 3 spacial dimensions that we perceive to exist in?
- 135
1
vote
0
answers
51
views
Gravity and space bending question [duplicate]
Not a physicist here but something has been puzzling me for a while.
As I understand gravity in General Relativity, it bends the space time as this Picture. Now this is all nice and elegant if I look ...
- 111
4
votes
3
answers
1k
views
Is there a way to visualize curvature of time?
Is there a way to visualize curvature of time? I mean curvature of space is both mathematically and physically is comprehensible. I have doubt about curvature of time.
- 1
-4
votes
2
answers
165
views
Einstein's spacetime thought doubt [closed]
In the animation of this image you can see spacetime is constantly going towards the earth's center of mass, and when a layer of spacetime reaches to the earth's center of mass another layer of ...
- 1,070
0
votes
0
answers
42
views
Doubt regarding Space-time Grids [duplicate]
I had a doubt regarding space-time grids... I just don't understand, if the universe is three-dimensional (excluding the time dimension) why do we represent the universe as a single 2D fabric of grids ...
- 25
0
votes
1
answer
157
views
How would you visualise a curvature in spacetime? [duplicate]
Just wondering how one could visualise a curvature in spacetime. If anyone has a site, image or video showing this it would be appreciated.
- 11
6
votes
1
answer
322
views
Pseudo-Riemannian 2D manifold (visualize time curvature)
My goal is to visualize somehow the curvature of time, as opposed to the curvature of space. I know that we generally talk about spacetime curvature altogether; however, the fact that spacetime has ...
- 719
1
vote
2
answers
8k
views
What is the Fabric of Spacetime? [duplicate]
I always get the analogy of the pretend sun on a piece of cloth pulling everything down such as the image attached below:
But What I never really understood is what IS that piece of cloth. Like is it ...
- 13
-1
votes
2
answers
727
views
How does one imagine the curvature of spacetime in 3D? [closed]
I'm learning about general and special relativity, but I can't seem to wrap my head around the concept of spacetime being curved in 3D. The 2D flat drawings are very explanatory, but how does one ...
3
votes
4
answers
3k
views
Visualizing gravity
When you see graphics trying to help people visualize what gravity in Einstein's relativity "looks" like it will often be a mostly two-dimensional plane with a concave warp where a massive object is ...
- 147
4
votes
3
answers
2k
views
How does warped space actually look (visually)?
Recently, I was reading about space warping due to extreme gravity and at speeds approaching c, but in books, they always show space in 2D and depth to show space distortion. I was wondering how ...
- 143
9
votes
2
answers
15k
views
Visualizing gravity in 3D
We've all seen the depiction of gravity bending space downwards, and so attracting objects into the dent it creates, cf. e.g. this and this Phys.SE posts. That's intuitive and makes a lot of sense, ...
- 415
8
votes
5
answers
1k
views
How can I vizualize and understand curved spaces in general relativity?
I'm taking a basic physics class and the teacher described space with a special table that has curves and black holes etc. He would throw a metal ball down onto it and the class would watch it circle ...
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