How can we visualize gravity in 4D spacetime?

  • Thread starter Thread starter hover
  • Start date Start date
hover
Messages
342
Reaction score
0
How can we visualize 4D spacetime and how gravity plays a role in 4D spacetime??
 
Physics news on Phys.org
Faq

hover said:
How can we visualize 4D spacetime and how gravity plays a role in 4D spacetime??

This is a FAQ; did you try searching for previous PF threads? This very question was discussed as recently as a few days ago.
 
If you take and combine two of the spatial dimensions say z and y then have time be your third dimension on a graph it is pretty easy. Its used in a lot of examples and what not in books.
 
Last edited:

Thread 'Euclidean geometry and gravity'

I asked a question here, probably over 15 years ago on entanglement and I appreciated the thoughtful answers I received back then. The intervening years haven't made me any more knowledgeable in physics, so forgive my naïveté ! If a have a piece of paper in an area of high gravity, lets say near a black hole, and I draw a triangle on this paper and 'measure' the angles of the triangle, will they add to 180 degrees? How about if I'm looking at this paper outside of the (reasonable)...
View full post »
Thread 'Relativity of simultaneity in actuality'

Thread 'Relativity of simultaneity in actuality'

I’m attaching two figures from the book, Basic concepts in relativity and QT, by Resnick and Halliday. They are describing the relativity of simultaneity from a theoretical pov, which I understand. Basically, the lightning strikes at AA’ and BB’ can be deemed simultaneous either in frame S, in which case they will not be simultaneous in frame S’, and vice versa. Only in one of the frames are the two events simultaneous, but not in both, and this claim of simultaneity can be done by either of...
View full post »

Similar threads

I How is proper time visualized in the FLRW metric's 4D spacetime geometry?
Replies
6
Views
2K
I How Is Intrinsic Curvature Measured in Higher Dimensions Like 4D Spacetime?
Replies
19
Views
367
B Does the gravitational distortion of mass still exist in the past?
Replies
28
Views
1K
I Solving Boundary Conditions in 4D Spacetime Volume
Replies
2
Views
2K
I Reconciling smooth spacetime with variable, rotating, earth gravity
Replies
4
Views
1K
B How to know what maximal atlas to use for spacetime manifold?
Replies
12
Views
1K
B Can there be many Worldlines in 4D spacetime?
Replies
10
Views
2K
I What's the underlying frame of the Einstein's Field Equation?
4
Replies
186
Views
11K
I Why isn't spacetime considered as true 4D?
Replies
22
Views
5K
B Does Spacetime Have Physical Existence?
2
Replies
58
Views
3K

Hot Threads

Recent Insights

Back
Top