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Richard Clark writes:
On Thu, 10 May 2007 00:18:25 -0500, (Richard Harrison) wrote: "----Unlike protons and neutrons, photons have zero rest mass. (Albert Einstein`s special relativity theory predicted that massless particles travel at the speed of light in a vacuum.) It should be added that "particles" accelerated to the speed of light (radiation) have infinite mass requiring infinite energy to get them there. Particles with non zero rest mass, that is. |
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