Exploring the Weight of Light: Does it Have Mass?

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Majed Alhemyani
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Majed Alhemyani said:
Does light have a mass?
No, there is no rest mass (photons don't rest!). Although it does have momentum and energy. Or maybe that's momentum or energy; Einstein said they are related E2 = m2⋅c4 + p2⋅c2. For light, m = 0. For rest mass, momentum p = 0.
 
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