From: r_delaney2001@yahoo.com   
      
   I was shopping for a flashlight recently, and naturally   
   noticed a trade-off between size/compactness and brightness.   
   The devices range up to 500 Lumens.   
      
   Human perception is logarithmic.  So I wonder, at what   
   point, measured in Lumens, does apparent brightness   
   level off?  For instance, imagine you're in a dark place,   
   and you want to blind an adversary.  How many Lumens required?   
      
   I seek the brightest lamp reasonable, while at the   
   same time portable;  pocket or belt carry   
      
   --   
   Rich   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)