Ehrenfest Paradox
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Ehrenfest Paradox is the retardation in the transmission of centripetal accelerations. It is also plays an important role in time desynchronization. It has been deepened further by Albert Einstein, who showed that since measuring rods aligned along the periphery and moving with it should appear contracted, more would fit around the circumference, which would thus measure greater than 2πR. This indicates that geometry is non-Euclidean for rotating observers, and was important for Einstein’s development of general relativity. It discusses an ideally rigid cylinder that is made to rotate about its axis of symmetry.

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