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Unformatted text preview: are based on rather rough approximations (anharmonicity is neglected, phonon spectrum is approximated by ν 2 in Debye model, etc.). In practice c p (T) in normally measured experimentally and the results are described analytically, e.g. C p = A + BT + CT2 for a certain range of temperatures. MSE 3050, Phase Diagrams and Kinetics, Leonid Zhigilei Summary (2) Equipartition theory is only valid if all degrees of freedom are “fully” excited. Low T, C v → High T, C v → 3R T C v , J K1 mol Quantized energy levels Δ E/kT n e ~ P − Δ E << kT  classical behavior Δ E ≥ kT  quantum behavior 24.9 Energy...
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 Spring '12
 Zhigilei
 Thermodynamics, Energy, Fundamental physics concepts, Leonid Zhigilei

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