Thread: Length Contraction problem View Single Post
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Length Contraction problem

 Quote by bjgawp Hmm. So if 1.20m is from the electron's frame, wouldn't that mean it is assigned to L0? But, since this is the proper length we're dealing with where we have to measure the tube at the same time, it has to be from the earth's frame .. doesn't it? Sorry, I guess I don't understand the assignation/ the nature of the variables.
The 0 in L0 stands for the proper value, the value in its own restframe. Clearly from the electron's rest frame the tube is not at rest and thus it cannot be assigned L0.