Difference between revisions of "Celsius"

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'''Celsius''' is a [[measurement]] of [[temperature]]. It is also called the Centigrade scale. It was originally defined to be where <math>0^{\circ}</math> Celsius is where water freezes at 1 [[atm]] and <math>100^{\circ}</math> Celsius is where water boils at 1 atm.
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The '''Celsius''' (also '''Centigrade''') scale is a was [[measure|measuring]] [[temperature]]. Originally, <math>0^\circ\mathrm{C}</math> was defined as the temperature at which water freezes at 1 [[atm]], and <math>100^\circ\mathrm{C}</math> as the temperature at which water boils at 1 atm.
  
However different thermometers register slightly different temperatures at these points, so now, two points: the [[absolute zero]] and the [[triple point]] of water are used to fix the Celsius scale. To avoid incompatibility, absolute zero is defined to be <math>-273.15^{\circ}</math> and the triple point is <math>0.01^{\circ}</math>.
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However, since different thermometers register slightly different temperatures at these points, the [[absolute zero]] and the [[triple point]] of water are used to fix the Celsius scale. They are defined, respectively, to be <math>-273.15^\circ\mathrm{C}</math> and <math>0.01^\circ\mathrm{C}</math>.
  
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==Conversion==
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*Celsius to [[Fahrenheit]]: <math>^\circ\mathrm{F}=\tfrac{9}{5}\cdot{}^\circ\mathrm{C}+32</math>
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*Celsius to [[Kelvin]]: <math>\mathrm{K}={}^\circ\mathrm{C}-273.15</math>
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Revision as of 18:02, 18 December 2008

The Celsius (also Centigrade) scale is a was measuring temperature. Originally, $0^\circ\mathrm{C}$ was defined as the temperature at which water freezes at 1 atm, and $100^\circ\mathrm{C}$ as the temperature at which water boils at 1 atm.

However, since different thermometers register slightly different temperatures at these points, the absolute zero and the triple point of water are used to fix the Celsius scale. They are defined, respectively, to be $-273.15^\circ\mathrm{C}$ and $0.01^\circ\mathrm{C}$.

Conversion

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