2002 March 15
This list has discussed centigrade and Celsius. It has been said that
the values are the same.
The Celsius and centigrade temperature scales are defined differently.
There may be small differences in values.
Centigrade has 0 defined as the freezing temperature of water and has 100
defined as the boiling temperature of water, both at STP.
Celsius has 0 defined as 273.15 K and increments are kelvins.
So zero degrees Celsius may not be the freezing temperature of water and
100 degrees Celsius may not be the boiling temperature of water.
An increment of one degree centigrade may not be an increment of one kelvin.
For use by standards laboratories, the definitions are different so the
values may not be the same. Result: for temperature, in SI centigrade
does not exist.
Robert Bushnell
