From: into@oblivion.nothing.com   
      
   Helpful person  wrote in   
   news:95af3685-7702-42d4-81da-3b792033c3fb@googlegroups.com:   
      
   > It breaks photometry down to basics.   
   >   
   > Luminance   
   > Illuminance   
   > Intensity   
   > Flux   
   >   
   > From these simple concepts it is fairly easy to derive everything else.   
      
   So are you saying that if I can understand these four terms I   
   should be on a good path to understanding the rest?   
      
   In lieu of the book (which I was unable to download) I'll see   
   if concentrating on those topics in wikipedia will help.   
      
   Brian   
   --   
   http://www.skywise711.com - Lasers, Seismology, Astronomy, Skepticism   
   Sed quis custodiet ipsos Custodes?   
      
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    * Origin: you cannot sedate... all the things you hate (1:229/2)