From: spicedham@dualboot.net   
      
   "Paul F. Dietz"  wrote:   
   > Christopher M. Jones wrote:   
   >   
   > >  However, as has been   
   > > pointed out many times, the reflected photons are red   
   > > shifted, so entropy does increase in the system.   
   >   
   > The second law doesn't require that the entropy increase,   
   > and I don't believe it does necessarily increase here.   
      
   It only absolutely, positively requires that entropy not   
   decrease.  But in reality it almost always increases.  In   
   principle, with a perfectly flat, perfectly reflective   
   mirror, perhaps the entropy will be exactly balanced, but   
   in any real system the entropy is going to increase, due   
   to rough surfaces, absorption, etc.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)