From: r_delaney2001@yahoo.com   
      
   How do chemists determine the precise locations   
   of individual atoms within a molecule?   
      
      
   For atomic physics, the only thing we can observe   
   is spectra.  Bombard the sample with radiation,   
   modulate the temperature, read the spectra.  But   
   we can't micro-photograph and see the locations   
   of the components.   
      
   For instance, fatty acids:   
   https://tinyurl.com/fatty-acid00   
      
      
   --   
   Rich   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)