Physics 202, Lecture 5 - Web services at PCCspot.pcc.edu/~dulrich/2013p202/2013p202ln05.pdf · The...
Transcript of Physics 202, Lecture 5 - Web services at PCCspot.pcc.edu/~dulrich/2013p202/2013p202ln05.pdf · The...
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Kinetic Theory
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The kinetic hypothesis identifies heat energy with the random mechanicalenergy of molecules
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The simplest thermal system is one with no molecular interaction at all —an ideal gas
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The Maxwell-Boltzman distribution depicts the molecular speeds in anideal gas
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Entropy measures the distribution of internal energy in a system
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Fick’s law of diffusion and Brownian motion also follows from the kinetichypothesis
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Statistical mechanics based on Newton’s laws is not as successful as itshould be
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The root cause of this failure appears to be “frozen” degrees of freedom
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These considerations paved the way to a new theory of quantum mechanics
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