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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.

2
votes
The only well-defined point around which to define contraction is the center of the object along its direction of motion. This value is independent of the apparent length of the object. Additionally, …
answered May 5 '18 by Josh McK
2
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"Connected by propagation of a ray of light" means that the two events have a separation in spacetime such that if a ray of light were emitted from the location of event 1 at the same time as the occu …
answered Jan 8 '17 by Josh McK