From: not@here.now   
      
   Peter Fairbrother  wrote:   
      
   > Suppose a volume made from a perfect reflector filled with radiation. A   
   > door opens into a larger volume, also made from a perfect reflector.   
   >   
   > Does the photon energy decrease?   
   >   
   > How?   
      
   From a classical standpoint, no.  I suspect, however, that the entropy   
   will increase when you open the door, but I can't justify that.   
      
   From a quantum standpoint, there may be other factors, so I don't know.   
      
   >   
   > Thanks,   
   >   
   > Peter Fairbrother   
      
   Thanks for that interesting but completely idle question.  HTH, YMMV.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)