From: nedlatham@internode.on.net   
      
   Tom Roberts wrote:   
   > raymond.yohros wrote:   
   > >   
   > > Why then can we not determine what % of the speed of light   
   > > the [neutrinos] where traveling at and with some algebra as usual   
   > > determine their masses as well?   
   >   
   > The resolution in measuring their speed is too poor to distinguish it   
   > from c, by many orders of magnitude. So their mass cannot be determined   
   > from their speed. And as the moderator mentioned, one would also need to   
   > know the energy of the neutrinos.   
   >   
   > Also, KATRIN did not actually measure the mass of the electron neutrino,   
   > they only put an upper limit of 1.1 eV on it. They may be able to reduce   
   > that somewhat, but it is a very challenging measurement.   
   >   
   > Note that neutrino oscillation measurements imply nonzero   
      
   Which in turn implies irregularity of shape?   
      
   > but much smaller mass differences between the different neutrino   
   > mass eigenstates;   
      
   Three masses gives two differences; is there anything like an integral   
   common denominator?   
      
   > they cannot determine the mass of any of them.   
      
   So how are the differences determined?   
      
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