72 Maxwell–Boltzmanngases
- However,itisevidentfrom expressionsforSandCthat classical ideasmust fail
at low enough temperatures. - Surprisingly, calorimetric methods candetermine Planck’s constant throughthe
entropyconstantS 0 (6.15). - MB statistics differs from Boltzmann statistics by having a (necessary) extraN!
term in the free energy expression ( 6 .1 6 b). This arises from the indistiguishability
of gaseous particles, a matter ofcontroversyinBoltzmann’sday.