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We now have to prove that any ray of light, measured in the moving system, is propagated with the velocity c, if, as we have assumed, this is the case in the stationary system; for we have not as yet furnished the proof that the principle of the constancy of the velocity of light is compatible with the principle of relativity.
On The Electrodynamics of Moving Bodies (other) by Albert Einstein
Language: English
Submitted by: spondulix
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