Celsius
This is an old revision of this page, as edited by Learn together (talk | contribs) at 22:22, January 15, 2008. It may differ significantly from current revision.
Celsius is a temperature scale in the metric system. The scale was originally defined such that at standard atmospheric pressure water freezes at 0 ºC and boils at 100 ºC. To convert from Fahrenheit to Celsius take the Fahrenheit temperature, subtract 32 then multiply by 5 and divide by 9.
One Celsius degree is equal to one degree Kelvin, with an offset such that T(°C) = T(K) - 273.15. So Kelvin's absolute zero (the temperature at which there is no heat) is -273.15 degrees Celsius.
Celsius is the commonly used unit of temperature in Europe and Canada, but in the United States, Fahrenheit is still preferred. Centigrade was a term commonly used as a synonym of Celsius in the past.