inundate
发表于 2025-3-23 11:09:23
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细胞学
发表于 2025-3-23 16:56:30
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MULTI
发表于 2025-3-23 21:03:31
https://doi.org/10.1007/978-3-322-80721-2st by Albert Einstein, the energy spectrum of the phonons is given by Planck’s radiation law, resulting in a distinct deviation from the classic law of Dulong and Petit. Subsequently, the Einstein model, based on a single phonon frequency, was extended by Peter Debye by including the complete phonon
intertwine
发表于 2025-3-24 00:47:13
Thomas Jäger,Alexander Höse,Kai Oppermanny forbidden energy gaps. The approximations with bound electrons (F. Bloch) and with nearly-free electrons (R. Peierls) are discussed. Depending on how the energy states within the bands are occupied by electrons, we deal with electrical conductors, semiconductors, or insulators.
辩论的终结
发表于 2025-3-24 04:30:30
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PURG
发表于 2025-3-24 07:03:32
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漂亮
发表于 2025-3-24 11:55:17
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易发怒
发表于 2025-3-24 16:16:02
Kathrin Brockmann,Eva Strickmannn 1911 he discovered superconductivity, where electric current flows without detectable resistance. Superconductivity requires that distinct critical values of the temperature and magnetic field are not exceeded. Eventually it was found that a magnetic field is expelled from the interior of a superc
conformity
发表于 2025-3-24 21:05:59
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A精确的
发表于 2025-3-25 01:46:36
https://doi.org/10.1007/978-3-658-41564-8magnetism. In an external magnetic field the magnetization of a paramagnet is described classically by the Langevin function, to be replaced by the Brillouin function in the case of quantization effects. In a ferromagnet the elementary magnets are spontaneously oriented along a distinct direction. T