Timeline for What was Albert Einstein's proof for $E=mc^2$?
Current License: CC BY-SA 4.0
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| Jul 7, 2018 at 4:31 | history | edited | Abhimanyu Pallavi Sudhir | CC BY-SA 4.0 |
added 8 characters in body
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| Jul 7, 2018 at 4:23 | comment | added | Abhimanyu Pallavi Sudhir | @JánLalinský You're right -- we just need $E=pc$ for light. Deriving it from $p=vE$ just seems un-motivated (and also trivial). | |
| Jul 5, 2018 at 22:13 | comment | added | Ján Lalinský | In this derivation you assume Einstein's relation $E=h\nu$ for the light pulses, which is unnecessarily special assumption. The formula at question is valid for any energy loss via EM radiation, not just those that conform to that idea of quantization. What is really needed are the transformation properties of momentum and energy of a light pulse (the relation $p=vE$ you have used above). These follow directly from EM theory and Lorentz transformations, no quantum theoretical assumptions are needed. | |
| Jul 5, 2018 at 18:46 | history | answered | Abhimanyu Pallavi Sudhir | CC BY-SA 4.0 |