Charles's law states: If the pressure is constant, the volume of a mass of gas is proportional to the absolute temperature. The absolute temperature is always 273 Kelvin more than the centigrade temperature.
A useful expression of this physics law is:
![Charles's Law Equation](/cms/sites/default/files/wiki_images/charles-law1.jpg) |
Where V1 is the volume of a mass of gas at temperature T1 kelvins and V2 is its volume after the temperature has changed to T2 kelvins. |
![Charles's Law Illustration](/cms/sites/default/files/wiki_images/climage.jpg)
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Another illustration that is helpful to understand Charles's law is when you have the same amount of molecules in two separate volumes, yet they have displace different volumes caused by 2 different temperatures. |
This graph plots the formula and will show either the volume or the temperature as they change. |
![Charles's Law Graph](/cms/sites/default/files/wiki_images/clgraph.gif) |