From: earlcp@idirect.com   
      
   "Nog"  :   
      
   > If heat cannot rise and draw in cool oxygenated air from the bottom it   
   > seems to me that the fire would tend to smother itself.   
      
   You would think so, however in freefall the flame develops lots of free   
   radicals in the volume the flame occurs in.  Thus even if the flame seems to   
   die out as soon as oxygen makes it into the flame zone the radicals will   
   burn, releasing heat that causes more free radicals to form.   There is a lot   
   more than this going on, but that should give you an idea why the fire never   
   really goes out.   
      
                    Earl Colby Pottinger   
      
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