On Wednesday, December 23, 2015 at 6:42:10 PM UTC-5, RichD wrote:   
   > 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   
      
   Well if the speed of light was infinite, then the photon momentum would be   
   zero...   
   (one over infinity.... )   
      
   George H.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)