From: r_delaney2001@yahoo.com   
      
   In histories of the development of quantum mechanics,   
   they dwell on the question of the momentum carried by   
   a photon.  Apparently this was a big deal.  It goes like,   
   "Experiments determined that a photon carries kinetic   
   energy and momentum, confirming the predictions of the theory."   
      
   My question: is there any other possibility?  I mean,   
   is it conceivable that light could deliver energy, but NOT   
   momentum?  It seems logically and physically impossible.   
      
   I don't see the great significance of this discovery,   
   actually it strikes me as trivial.   
      
   --   
   Rich   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)