Difference between revisions of "Celsius"
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'''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. | '''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 [[Kelvin]], with an offset such that T(°C) = T(K) - 273 | + | 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. | 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. | ||
| − | [[Category:Units of | + | |
| + | [[Category:Units of Temperature]] | ||
Revision as of 22:22, January 15, 2008
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.