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Physics question by hagar2006-10-26 20:56:26
  Mu. by raptor_872006-10-26 21:08:31
    A photon itself may be assumed massless. by hagar 2006-10-26 21:12:55
But now I am thinking how the telescope lens will collide with photons when it is moving in the same direction with twice the speed,hmm. Maybe not a lens but a redirecting tube of some sort.
[ Reply ]
      Photons have zero rest mass by admeralthrawn2006-10-26 21:24:53

 

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