At 02:23 PM 4/19/02 +0200, you wrote:
   Since when has
'Celsius' been an SI unit? And since when has the
 abreviation for it been 'C'? C _is_ used for an SI unit -- the Coulomh. 
It
is a derivated unit, as Coulomb, but you'r right, the
name is Degree Celsius (?C), and youre right, C is Coulomb.
Gruss 
 
wait - isn't the Kelvin the SI unit?
carlos.
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Carlos E. Murillo-Sanchez   carlos_murillo(a)nospammers.ieee.org