twin paradox: Quick Facts

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Also Known As	clock paradox

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Lorentz transformations time relativity paradox Ship of Theseus time dilation Paradoxes of Zeno anachronism Liar paradox Sorites problem time perception 22 Questions About Time and Timekeeping Answered dynamical time geologic time

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relativity: Relativistic mass

Italian-born physicist Dr. Enrico Fermi draws a diagram at a blackboard with mathematical equations. circa 1950.

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