Consider a train traveling at a relativistic velocity, with three observers. One inside the train, and two outside the train traveling at different velocities with respect to it. Say there is a finish line of sorts at a certain point. All observers will agree when the train reaches the line.(adsbygoogle = window.adsbygoogle || []).push({});

Does this mean that length contraction occurs, in layman's terms, with the back of the object contracting toward the front?

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# In what direction does length contraction occur?

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