APS Excellence in Physics Education Award
November 2019

Science SPORE Prize
November 2011

The Open Source Physics Project is supported by NSF DUE-0442581.
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Entropy and Boltzmann's Distribution JS Model Documents
This material has 2 associated documents. Select a document title to view a document's information.
Main Document
written by
Fernando Silva Fernandes
This model simulates an isolated system of 1000 distinguishable and non-interacting molecules modeled as quantum harmonic oscillators, inspired by the article "A Computer Problem in Statistical Thermodynamics", P. Schettler, J. Chem. Education, 51, 250 (1974). Through successive random molecular jumps between the energy levels of the oscillators, the entropy of the system tends to a maximum and Boltzmann's distribution is approached. That is, the system evolves to the equilibrium state accordingly the 2 nd Law of thermodynamics. The model can be used as a complemental tool for teaching thermodynamics and statistical mechanics at undergraduate level, requiring only a browser to be executed.
Last Modified January 13, 2024
Source Code Documents
EJS JavaScript source code for the Entropy and Boltmann's Distribution model.
Last Modified January 13, 2024
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