http://en.wikipedia.org/wiki/Mass–energy_equivalence#Alternative_version(adsbygoogle = window.adsbygoogle || []).push({});

According to Wikipedia,

"The velocity is small, so the right-moving light is blueshifted by ... Doppler shift factor [tex]1-\frac{v}{c}[/tex]

But [tex]1-\frac{v}{c}[/tex] should not be applied under relativistic conditions.

The formula [tex]\frac{1}{1+\frac{v}{c}}[/tex] should be used instead.

So wouldn't this invalidate Rohrlich's derivation?

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# Rohrlich's derivation of E=mc2 wrong?

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