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A comment on Einstein's E=mc^2 is only for stationary masses.

Re:Einstein's E=mc^2 is only for stationary masses by BeeBoBub on Sunday April 28, 2019 @02:50PM (#19772894)
For non-accelerating masses, or more precisely within an inertial reference frame
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Re:Einstein's E=mc^2 is only for stationary masses by Fjolsvith on Monday April 29, 2019 @10:12AM (#19778477)
Relatively speaking?
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