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Isentropic Exponent

Isentropic exponent is a variant of "Specific Heat Ratio Capacities}. For an ideal gas \textit{Isentropic Exponent"\(, \varkappa\). is equal to \(\gamma\), the ratio of its specific heat capacities \(c_p\) and \(c_v\) under steady pressure and volume.

http://en.wikipedia.org/wiki/Compressibility

http://en.citizendium.org/wiki/Specific_heat_ratio

http://www.iso.org/iso/catalogue_detail?csnumber=31890

\(\varkappa = -\frac{V}{p}\left \{ \frac{\partial p}{\partial V}\right \}_S\), where \(V\) is volume, \(p\) is pressure, and \(S\) is entropy.

\(\varkappa\)