Equation of Change for Entropy

The most important aspect of this development of the microscopic equations of change for kinetic, internal, and total energies is the identification of conductive energy flux, which allows one to construct an equation of change for specific 

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When the fluxes are taken to be and q, — (9kr/2m )j , as suggested by the equation of change for entropy, then the numerical coefficients in the cross terms are the same, in agreement with the Onsager reciprocal relations. This provides one check on the evaluation of the flux expressions for the Hookean dumbbell model. 

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