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Results tagged with reference-frames
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user 57610
A reference frame is a particular coordinate system chosen to represent physical entities. The notion is most often used in special and general relativity to denote particular coordinates chosen on the spacetime manifold.
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Why don't clocks on a train read the same time?
Two clocks are positioned at the ends of a train of length $L$ (as measured in its own frame). They are synchronized in the train frame.
The train travels past you at speed $v$. It turns out t …
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