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Results tagged with special-relativity
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user 244698
The special theory of relativity describes the motion and dynamics of objects moving at significant fractions of the speed of light.
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How come photons have no mass if they have energy and $E=mc^2$? [duplicate]
If photons have no mass, and yet have energy, how is that compatible with $E=mc^2$? Anything having mass should have energy (and the opposite should be true as well no)?
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