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E2P2c2throwaway
searching PlanetScale…
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by
E2P2c2throwaway
3y ago
If the particle has zero rest mass, like a photon, it still has energy. E^2 = p^2 c^2 + m_0^2 c^4 captures that correctly, while E = mc^2 where 'm' is the relativistic mass, does not.