XPost: rec.arts.comics.strips   
   From: kludge@panix.com   
      
   Thomas Koenig   wrote:   
   >   
   >What is R-20 and R-30?  Another kind of liberty unit? :-)   
      
   Yes, it's a measure of thermal resistance.  Ironically, it appeared in the   
   US at a time when we were actively moving toward the metric system, back   
   in the seventies.   
      
   Nobody outside of construction folks actually use it.  It was never mentioned   
   in my thermo class.  I saw how it was calculated and it was kind of a mess.   
   --scott   
      
   --   
   "C'est un Nagra. C'est suisse, et tres, tres precis."   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)