Abstract: The parity symmetry in physics shows that the motions in two different reference frames are related to each other. By comparing the displacement and the velocity from two reference frames, the elapsed time can be shown to be conserved in both reference frames. For two frames in relative inertial motion, the elapsed time is conserved in all inertial reference frames. If both frames are in circular motion, then the elapsed time is conserved in all local reference frames on the same circle. If both frames are free to move in any direction at any speed, then the elapsed time is conserved in all non-inertial reference frames. Two simultaneous events are simultaneous in all reference frames.
Publication Year: 2019
Publication Date: 2019-02-01
Language: en
Type: preprint
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