From: nedlatham@internode.on.net   
      
   Ned Latham wrote:   
   >   
   > I was thinking about parallel-sided glass blocks, and their   
   > fascinating demonstration of refraction of light on both   
   > entry and exit, and it occurred to me that I've never seen   
   > or heard anything about the beam itself except that it's a   
   > little wider on exit than on entry.   
   >   
   > So I wondered: has anyone ever looked at the exit beam in   
   > sufficient detail to detect a spectrum or dismiss the idea?   
      
   Ten days and no response. I can't find anything relevant on   
   the web. Is there really no info on this out there?   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)