Volume 55, Number 5, September 2001
|Page(s)||623 - 625|
|Published online||01 December 2003|
Nernst's postulate derived directly from the vanishing heat capacity at zero temperature
Department of Physics, Xiamen University - Xiamen
2 Ørsted Laboratory, University of Copenhagen Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
Accepted: 26 June 2001
We show that Nernst's original postulate follows directly from a vanishing heat capacity at zero temperature without further constraints. Thermodynamic stability of the system along with the independence of the other thermodynamic state variables ensures a sufficiently slow temperature approach to zero that the change of the entropy of the system vanishes at least as rapidly as the heat capacity.
PACS: 05.70.Ce – Thermodynamic functions and equations of state / 65.20.+w – Thermal properties of liquids: heat capacity, thermal expansion, etc
© EDP Sciences, 2001
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