XPost: sci.electronics.design   
   From: nospam@de-ster.demon.nl   
      
   DJ Delorie  wrote:   
      
   > ram@zedat.fu-berlin.de (Stefan Ram) writes:   
   > >   In general relativity, photons should attract each other, but   
   > >   this effect should be very weak and should hardly be observable.   
   >   
   > If the photons are travelling at the speed of light (duh) wouldn't time   
   > dilation make any effect "over time" go to zero anyway?  I.e. it doesn't   
   > matter how much photons attract each other if there's no time in which   
   > to be affected by it.   
   >   
   > (I am *not* an expert here)   
      
   Photons have all the time of the world.   
   (they travel an infinite distance in zero proper time)   
      
   If you want to be naive about it, that is,   
      
   Jan   
      
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