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GR Postulates Local Equivalency Between Gravity And Acceleration

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Posted by Alexander on October 2, 2001 00:23:44 UTC

This means "In infinitely small volume of space" (the case of "flat Earth"). And then it integrates over large volume to calculate actual geodesics for actual mass-energy distribution.

So, globally gravity is NOT equivalent to acceleration - indeed two masses will move toward each other if placed horisontally and away from each other if placed verically in a free fall.

But GR does not fall apart because all events in universe are local (connected locally, not globally). Even gravity itself propagates with the finite speed (=of light c) making all gravitational events local and causal.



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