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QUDT VOCAB Quantity Kinds Release 2.1.25
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quantitykind:EffectiveMass
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http://qudt.org/vocab/quantitykind/EffectiveMass
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Effective Mass
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http://en.wikipedia.org/wiki/Effective_mass_(solid-state_physics)
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http://www.iso.org/iso/catalogue_detail?csnumber=31897
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\(m^* = \hbar^2k(\frac{d\varepsilon}{dk})\), where \(\hbar\) is the reduced Planck constant, \(k\) is the wavenumber, and \(\varepsilon\) is the energy of the electron.
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"Effective Mass" is used in the motional equation for electrons in solid state bodies, depending on the wavenumber and corresponding to its velocity and energy level.
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m^*