Temperature: Difference between revisions
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The '''temperature''' of a system in [[classical thermodynamics]] is intimately related to the [[zeroth law of thermodynamics]]; two systems having to have the same temperature if they are to be in thermal equilibrium. | The '''temperature''' of a system in [[classical thermodynamics]] is intimately related to the [[zeroth law of thermodynamics]]; two systems having to have the same temperature if they are to be in thermal equilibrium (i.e. there is no net [[heat]] flow between them). | ||
However, it is most useful to have a temperature scale. | |||
By making use of the [[Equation of State: Ideal Gas |ideal gas law]] one can define an absolute temperature | By making use of the [[Equation of State: Ideal Gas |ideal gas law]] one can define an absolute temperature | ||
Revision as of 15:41, 7 February 2008
The temperature of a system in classical thermodynamics is intimately related to the zeroth law of thermodynamics; two systems having to have the same temperature if they are to be in thermal equilibrium (i.e. there is no net heat flow between them).
However, it is most useful to have a temperature scale.
By making use of the ideal gas law one can define an absolute temperature
- Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle T = \frac{pV}{Nk_B}}
having the SI units of Kelvin (named in honour of William Thomson).
- Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \frac{1}{T(E,V,N)} = \left. \frac{\partial S}{\partial E}\right\vert_{V,N}}