KnowraSommerfeld modelLinked fromLinked fromThe 9 pages that link to Sommerfeld model, each with the reason it gives.All 9Broader topic 4Related 3Compared with 2Bohr modelRelated: It refined the original model to account for some spectral details Bohr’s version missed.Fermi–Dirac statisticsRelated: Fermi–Dirac occupation explains the model’s electronic heat capacity and conduction properties.Drude modelCompared with: It corrects Drude’s classical statistics while retaining a related free-electron picture.Arnold SommerfeldBroader topic: This named atomic model is Sommerfeld’s most direct contribution to early quantum theory.Fermi gasBroader topic: It uses the Fermi-gas picture to improve the classical theory of metals.Free electron modelBroader topic: It replaces classical electron statistics with quantum statistics while retaining free motion.Electron gasBroader topic: It turns the electron-gas picture into a successful account of metal heat capacity and conduction.Felix BlochCompared with: It improves on classical conduction theory but omits the periodic lattice central to Bloch’s account.Wiedemann–Franz lawRelated: It derives the law more accurately by accounting for the electrons’ quantum statistics.