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Racer Adam (shoelegend88)
Race Number 12
Date Sat, 2 Feb 2019 23:19:46 +0000
Universe o4do0q2x8u
Speed 113 WPM Try to beat?
Accuracy 97.5%
Rank 1st place (out of 2)
Opponents omk1 (2nd place)

Text typed:

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 (see stats)

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