XPost: sci.physics.relativity   
   From: ram@zedat.fu-berlin.de   
      
   ram@zedat.fu-berlin.de (Stefan Ram) wrote or quoted:   
   >Some may confuse mass with /matter/. Matter usually is taken   
   >to be fermions. In the process, non-matter (bosons) is in   
   >fact converted into matter (fermions). So you /can/ say,   
   >"matter appears where there was none".   
      
     Or, one could say: "Radiation is converted into matter.".   
      
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