From: noelturntive@live.co.uk   
      
   We are all familiar with the equations to quantify energy of EMR from a   
   single wavelength or frequency. But I have been unable to find any   
   reference on how to calculate energy from a *range* of wavelengths or   
   frequencies. In particular with reference to Doppler shifted emr For   
   instance: Can one calculate what difference in energy , if any,  an   
   emitted source of emr between 100-200nm would have if it was redshifted   
   to 200-400nm?   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)