In this paper,the Nernst equation is applied to illustrate that when the temperature is equal to absolute zero,all the processes of a thermodynamic system are reversible and iso-thermal,overlapping with reversible adiabatic processes,and there is no zero-point heat.This solves the problem raised in textbooks and literature but not answered.For the thermodynam-ic system that does not satisfy the Nernst equation,further research is needed to determine whether there is zero-point heat.
Nernst equationabsolute zero temperaturereversible isothermreversible adia-batzero-point heat