The Celsius temperature
scale employs a degree of the same magnitude as that of the ideal gas scale,
but its zero points are shifted, so that the Celsius temperature of the triple
point of water 0.01 degree Celsius or 0.010C.
If t denotes the Celsius
temperature, then
t = T - 273.150
Thus the Celsius temperature ts at which steam condenses at 1-atmosphere pressure
ts = Ts
- 273.150
= 373.15 -
273.15 = 100.00 0C
Similar measurements for
ice points show this temperature on the Celsius scale to be
0.00 0C.