XPost: rec.arts.comics.strips   
   From: tkoenig@netcologne.de   
      
   Scott Dorsey  schrieb:   
   > In article <10k0qgo$3r1s$1@dont-email.me>, BCFD 36     
   wrote:   
   >>I have never run across "tons" when talking about cooling. I don't think   
   >>it is common. I have seen BTUs, CFM at xxx degrees, etc.   
   >   
   > It's pretty common for any industrial AC stuff.  Americans also use   
   > "BTU" when we mean "BTU/hr" which is almost as bad as the whole   
   > "calories meaning kcal" mess.   
      
   A good thing these were thrown out (except in the context of   
   nutrition, where they still occur).   
      
   Having different units for heat and mechanical energy is just   
   fundamentally broken, as is having things like Earth's gravity or   
   the density of certain liquids such as water or mercury in units   
   (except for their historical definition).  Units just need to   
   be consistent.   
      
   I remember cracking up once when I read a definition of the   
   Reynolds number not as   
      
     Re = u * d * rho / eta   
      
   but as   
      
     Re = u * d * rho / (eta * c)   
      
   where c was the correction factor for the units, left unspecified,   
   of course.  Hilarious!   
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