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Results tagged with general-relativity
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user 186417
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.
4
votes
1
answer
946
views
Black hole analogy
There is a well known black hole analogy which considers a bathtub filled with water. It seems to me that the tub creates some kind of curvature in the water comparable to what a black hole does, suck …
- 909
2
votes
1
answer
822
views
Schwarzschild geometry for negative masses
Imagine that in a part of our universe there exists negative masses $M=-|M|<0$.
The metric around this object -- say a black hole -- will be of the form
$$
ds^2 = -\Big(1+\frac{2|M|}{r}\Big)dt^2 + \B …
- 909