How did Einstein derive his most famous equation: $$E=mc^2$$
Is the above equation a special case of $$E^2=m^2c^4+p^2c^2$$
Its derivation?
What is the difference between them?
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Qmechanic
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Quantum Sphinx
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do you mean Einstein's original derivation or any derivation will do? – Nikos M. Oct 29 '14 at 11:12
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3the original 1905 paper of Einstein on the electrodynamics of moving bodies already contains a form of this relation – Nikos M. Oct 29 '14 at 11:13
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2this is a second paper of Einstein on the relation between inertia and energy and contains a further form of the relation – Nikos M. Oct 29 '14 at 11:15
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@Nikos M it would be helpful if you can furnish me with Einstein's original derivation, as long as it does not involve too much calculus(I am fine with basic calculus); although I will be indebted to you for any logically consistent proof – Quantum Sphinx Oct 29 '14 at 11:18
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Einstein's papers of 1905,1906 on special relativity, do not involve contrived mathematics apart geometry and physical reasoning – Nikos M. Oct 29 '14 at 11:19
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a summary of the derivations in modern form in wikipedia and wikipedia2 – Nikos M. Oct 29 '14 at 11:26
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Possible duplicates: http://physics.stackexchange.com/q/43813/2451 , http://physics.stackexchange.com/q/143652/2451 and links therein. – Qmechanic Oct 29 '14 at 11:37
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@Qmechanic, this question is older than one of the possible duplicates (maybe that could be a duplicate, it has answers of course) – Nikos M. Oct 29 '14 at 13:06
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1@Nikos M.: Note that age is not always decisive when deciding which is a duplicate of which. – Qmechanic Oct 29 '14 at 13:11