Who can prove this?
回答 (3)
2008-03-02 11:36 pm
✔ 最佳答案
EinsteinEuclid
some others I can't remember
2008-03-03 7:39 am
You mean that geodesics in spacetime are curved?
That's a statement about physics, and so must be demonstrated through experiment.
One way to do it would be to measure the angles of a triangle in a gravitational field, for example the angles between three mountaintops on the Earth. You'd find the sum of the angles was not exactly equal to 180 degrees.
That's a statement about physics, and so must be demonstrated through experiment.
One way to do it would be to measure the angles of a triangle in a gravitational field, for example the angles between three mountaintops on the Earth. You'd find the sum of the angles was not exactly equal to 180 degrees.
2008-03-03 7:45 am
Who has to prove it?
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