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A theory that describes how matter interacts dynamically with the geometry of space and time. It was first published by Einstein in 1915 and is currently used to study the structure and evolution of the universe, as well as having practical applications like GPS.

1
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The rate of acceleration is independent of the rate of motion so this formula still applies even when the two objects are moving relative to each other. The only time you need to use a different form …
answered Feb 15 '16 by Anders Gustafson
0
votes
1answer
The Schwarzchild metric is for the gravitational field of an object of mass $M$ with no electric charge and no angular momentum. The metric is $$ {ds}^{2} = \frac{dr^2}{1 - \frac{r_\mathrm{s}}{r}} - …
asked Aug 29 '18 by Anders Gustafson
6
votes
4answers
Time tends to slow down near objects with large amounts of positive mass relative to observers in micro gravity. Considering that negative mass is the opposite of normal mass and would time tend to s …
asked Apr 12 '16 by Anders Gustafson
4
votes
4answers
In Newtonian Physics there is an equation that for the Gravitational Flux of an object known as Gauss's Law For Gravity. Gauss's Law for Gravity describes the number of Gravitational Field Lines comi …
asked Dec 6 '15 by Anders Gustafson
1
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Repulsive Gravity would require Negative Energy and pure Negative Energy is not known to exist or at least as real particles. Negative Energy would also have Negative inertia and so it would tend to …
answered Dec 28 '15 by Anders Gustafson
2
votes
If you travel faster than light you wouldn't be going back in time from all reference frames, just some reference frames. If you were going faster than light then from some reference frames you would …
answered Sep 15 '15 by Anders Gustafson
0
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0answers
A spacetime with 2 indistinguishable dimensions and all spacetime directions equivalent would have the signature (++) meaning that there would be no difference between spacelike and timelike direction …
asked 4 hours ago by Anders Gustafson
0
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2answers
If I understand correctly the equation for kinetic energy in relativity is $$ E_k= mc^2 \left(\frac{1}{\sqrt{1-\frac{v^2}{c^2}}}-1\right) \;,$$ and the equation for escape velocity in General Relativi …
asked Jan 5 '18 by Anders Gustafson
-2
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2answers
In the Schwarzschild Metric as the spacetime interval between two points in spacetime approaches $0$ for any ratio between the length of time and space the spacetime interval between the points in spa …
asked May 23 by Anders Gustafson
-2
votes
1answer
There is an object in free fall above the surface of some planet. This planet has no significant atmosphere so there is no significant air resistance on the object. Also there is no significant elec …
asked Jan 25 '18 by Anders Gustafson