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I came across a book this afternoon called, "Einstein's Mistakes" by Hans C. Ohanian. If I'm remembering correctly, he said that the first error-free derivation of [itex] E=mc ^2 [/itex] did not exist until Max von Laue produced one in 1911, and that it was based on "mathematical properties of the stress-energy tensor".

Is this correct? I know one can arrive at

[tex]

d(KE) = d (\gamma m_0 c^2)

[/tex]

with a couple thought experiments and a little calculus, but can one find that the

Is this correct? I know one can arrive at

[tex]

d(KE) = d (\gamma m_0 c^2)

[/tex]

with a couple thought experiments and a little calculus, but can one find that the

*rest energy*of an object is [itex] m_0 c^2 [/itex] in a similar manner?
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