How does the theory of general relativity explain gravity?

[San K]

Not sure whether this post should be in the relativity forum. However a few years down the line it could be in-between relativity and QM.

What is the process of creation of gravity?

How does gravity effect two quantum entangled photons?...say when one of them passes through a bend in space-time...like the one that surrounds the earth.

Mass bends space-time. What does space-time bend in? Is there still a straight line (that would be without gravity) when space time is bent?

Can a hole/tear be created in space-time?

Which things are unaffected by gravity?

What is the effect of gravity on gyroscopes?

 

[Simon Bridge]

That's a very wide range of questions - a great deal has been written on all of them.

What have you done to attempt to discover the answers.

Note: gravity is currently best understood in terms of general relativity.
You have not asked anything that remotely approaches quantum gravity.

1. it is not something that gets created as such - it is just there, and is strongly related to energy densities.

2. what we mean by the curvature of space time is well defined in GR - think of it as a metaphor: in GR, "space-time" is not thought of as bending inside some higher-order meta-volume. The word is used to describe the kind of maths you get.

3. Define "hole" or "tear". If you are thinking in terms of tearing a fabric then: no.

4. Nothing known.

5. Same as on anything else.

If you are just starting out then try:
http://www.space.com/17661-theory-general-relativity.html