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fxdung
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Velocity of light in uniform motion frame is the same.But does velocity of light change in acceleration frame? Does the Cagnac effect(the shift of diffraction pattern in rotation frame) result of this change of velocity in the acceleration frame?If velocity of light in acceleration still is c why we have Cagnac effect because the rotation tranformation is only mathematical tranformation,it only ''rearrange'' the variables of space and time,but not physically change the time which affect the diffraction pattern.