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Currently Playing: Thermodynamics 6d - Heat Capacity and the Third Law IV

We have seen how quantum mechanical "freezing" of degrees of freedom accounts for heat capacities below the classical prediction. Here we examine how anharmonic oscillations explain heat capacities above the classical prediction. Thermodynamics playlist: https://www.youtube.com/playlist?list=PLsp_BbZBIk_4balQI5tY_Xo0y_9i-jYZ2