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・ Absorbing set
・ Absorbing set (random dynamical systems)
・ Absorbing the Disarray
・ Absorptance
・ Absorption
・ Absorption (acoustics)
・ Absorption (chemistry)
・ Absorption (economics)
・ Absorption (electromagnetic radiation)
・ Absorption (logic)
・ Absorption (pharmacokinetics)
・ Absorption (psychology)
・ Absorption (skin)
・ Absorption band
・ Absorption cross section
Absorption edge
・ Absorption hardening
・ Absorption heat pump
・ Absorption law
・ Absorption of water
・ Absorption refrigerator
・ Absorption spectroscopy
・ Absorption unit
・ Absorption wavemeter
・ Absorptive capacity
・ Absorptive state
・ Absorptivity
・ Absouya Department
・ ABSS
・ ABSS Institute of Technology


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Absorption edge : ウィキペディア英語版
Absorption edge
An absorption edge, absorption discontinuity or absorption limit is a sharp discontinuity in the absorption spectrum of a substance. These discontinuities occur at wavelengths where the energy of an absorbed photon corresponds to an electronic transition or ionization potential. When the quantum energy of the incident radiation becomes smaller than the work required to eject an electron from one or other quantum states in the constituent absorbing atom the incident radiation ceases to be absorbed by that state. For example, incident radiation on an atom of a wavelength that has a corresponding energy just below the binding energy of the K shell electron in that atom cannot eject the K shell electron.〔"The Penguin Dictionary of Physics", 3rd ed., Longman Group Ltd. (2000), p. 3〕
==See also==

*K-edge

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