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- Thread starter Sandeep T S
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If it is a point then how lift experiment could possible,

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And how we can prove light bend by gravity

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Because the lift is a small region and the equivalence principle applies approximately. Calculate the different (Newtonian) accelerations at the bottom and top of a typical lift. Could you detect that difference?If it is a point then how lift experiment could possible,

Formally, the equivalence principle means that the second derivatives of the metric can be made to vanish at a chosen point by an appropriate choice of coordinates, and the smoothness of the metric means that the second derivatives are small nearby. So no matter how precise your experiment, there's always a smaller separation where you will not be able to detect a difference between being on a rocket and on a planet.

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Google for Eddington's measurements during a solar eclipse.And how we can prove light bend by gravity

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Sandeep, you don't seem to realize how many of your questions could be answered with a simple Google search: For example:And how we can prove light bend by gravity

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