Isn't the point that photons have kinetic energy, but no rest mass. i.e., if a photon could possibly be at rest (which I don't think it can), then it would have no rest mass. We've got a lot of real estate up there on the roof; how much power could we get by lining our Vanagon roofs with solar cells? YauMan Chan wrote: >And the question is, if in fact photon really don't have mass, then what >make this thing spin? Or does this proof photon have mass? |
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