Difference between revisions of "Celsius"
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(used by scientists to measure temperature) |
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| − | '''Celsius''' is | + | The '''Celsius''' is used by scientists to measure [[temperature]]. 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. | 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. | ||
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[[Category:Units of Temperature]] | [[Category:Units of Temperature]] | ||
| + | [[Category:Metric System]] | ||
Revision as of 13:59, March 11, 2008
The Celsius is used by scientists to measure temperature. 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.
