Relativity and Cosmology

    

What is Mass?

Authors: R. I. Khrapko

Does the mass of bodies depend on their velocity? Is the mass additive if separate bodies are joined together to form a composite system? Is the mass of an isolated system conserved? Different teachers of physics and specialists give different answers to these questions because there is no general agreement on the definition of mass. We shall show that the notion of the velocity-dependent relativistic mass should be given preference over that of the rest mass.

Comments: 9 Pages. Physics – Uspekhi, 43 1267–1270 (2000) (including V.L. Ginzburg’s note and L.B. Okun’s Reply)

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[v1] 2014-07-16 03:37:46

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