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Results tagged with gravity
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user 2843
Gravity is an attractive force that affects and is affected by all mass and - in general relativity - energy, pressure, and stress. Prefer newtonian-gravity or general-relativity if sensible.
6
votes
2
answers
4k
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Theories that Relate Gravity, Electricity, and Magnetism [duplicate]
There are some people who (without having a stated theory that I know of) insist that Gravity, Electricity, and Magnetism are related. … Is it possible that there are "Maxwell-like" equations that relate Electricity and Magnetism directly to Gravity? All forms of electromagnetic energy do interact with gravity. …
- 6,044
2
votes
0
answers
74
views
Was Einstein's Cross Predicted by Einstein's Theories? [duplicate]
Possible Duplicate:
How does gravitational lensing account for Einstein’s Cross?
Einstein's Cross is a fascinating phenomena for which I have asked explanation here. However, I'm also inter …
- 6,044
36
votes
8
answers
6k
views
Does the curvature of spacetime theory assume gravity?
Whenever I read about the curvature of spacetime as an explanation for gravity, I see pictures of a sheet (spacetime) with various masses indenting the sheet to form "gravity wells." … Therefore I ask; does the explanation of gravity as the curvature of spacetime assume gravity? If yes, what is the point of the theory? If No, what am I missing? …
- 6,044
5
votes
5
answers
2k
views
How does the curvature of spacetime induce gravitational attraction?
I don't know how to ask this more clearly than in the title.
- 6,044
43
votes
5
answers
15k
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How does gravitational lensing account for Einstein's Cross?
Einstein's Cross has been attributed to gravitational lensing. However, most examples of gravitational lensing are crescents known as Einstein's rings. I can easily understand the rings and crescents, …
- 6,044