The Equivalence Principle and Roundtrip Times for Light
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چکیده
If an observer, at rest (in flat spacetime) between a pair of mirrors each at distance D but in opposite directions, emits two pulses of light simultaneously they return to the observer simultaneously after time 2D/c, where c is the speed of light. Discuss the case that the observer and mirrors have uniform acceleration (with respect to the inertial lab frame) along their common line. Compare with the case that the observer and mirrors are at rest in a “uniform gravitational field.”
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