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The special theory of relativity describes the motion and dynamics of objects moving at significant fractions of the speed of light.

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Lorentz contraction (or not) of an accelerated electron bunch

Hello I do not interpret length contraction but length expansion. Whether V1 or V2, the lab observer sees the electron bunch, so the bunch is 10 Lo in length. V = Vo: Lo, Length of electron bunch r …
length expansion 's user avatar