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Thermodynamic characterization of electromagnetic fields. (English) Zbl 0647.35074

Summary: A systematic treatment of the thermodynamic properties of electromagnetic fields is presented. Many potential difficulties are avoided by using the pre-existing electric and magnetic fields as thermodynamic variables. Four sets of thermodynamic functions of state may be defined, all of which are interrelated by Legendre transformations, and 96 Maxwell relations may be derived. The functions of state expressed in terms of the pre-existing electromagnetic field variables are then used to determine how the various thermodynamic quantities of interest vary with the applied fields. The analysis points to the need for carefully redefining the pressure when dealing with magnetic fields rather than magnetization as the fundamental independent variable.

MSC:

35Q99 Partial differential equations of mathematical physics and other areas of application
78A25 Electromagnetic theory (general)
80A10 Classical and relativistic thermodynamics
Full Text: DOI

References:

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