I have to say I was not familiar with inertial mass and gravitational mass of a photon. Or I have forgotten about it? They always leave (pc)2 part out of the famous equation.
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I have to say I was not familiar with inertial mass and gravitational mass of a photon. Or I have forgotten about it? They always leave (pc)2 part out of the famous equation.
E=mc2 is only valid for objects at rest :)