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absorption band

absorption band
a dark band in the absorption spectrum of a substance, corresponding to a range of wavelengths for which the substance absorbs more strongly than at adjacent wavelengths.

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Universalium. 2010.

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  • Absorption band — An absorption band is a range of wavelengths (or, equivalently, frequencies) in the electromagnetic spectrum which are able to excite a particular transition in a substance. See absorption spectrum. Since energetic transitions can take place in… …   Wikipedia

  • absorption band — noun a dark band in the spectrum of white light that has been transmitted through a substance that exhibits absorption at selective wavelengths • Hypernyms: ↑optical phenomenon * * * noun : a dark band in an absorption spectrum * * * Physics. a… …   Useful english dictionary

  • absorption band — noun Date: 1865 a dark band in an absorption spectrum; also absorption line …   New Collegiate Dictionary

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  • absorption band — noun one of any number of ranges of wavelengths of electromagnetic radiation absorbed by a substance …   Wiktionary

  • Infrared (absorption) band — Инфракрасная полоса поглощения …   Краткий толковый словарь по полиграфии

  • absorption — noun 1. (chemistry) a process in which one substance permeates another; a fluid permeates or is dissolved by a liquid or solid (Freq. 4) • Syn: ↑soaking up • Derivationally related forms: ↑absorb • Topics: ↑chemistr …   Useful english dictionary

  • absorption edge — noun : a clear cut long wavelength boundary of an absorption band in an X ray spectrum * * * Physics. a discontinuity in the graph of the absorption coefficient of a substance plotted against the wavelength of x rays being absorbed, representing… …   Useful english dictionary

  • absorption — /ab sawrp sheuhn, zawrp /, n. 1. the act of absorbing. 2. the state or process of being absorbed. 3. assimilation; incorporation: the absorption of small farms into one big one. 4. uptake of substances by a tissue, as of nutrients through the… …   Universalium

  • band — 1. Any appliance or part of an apparatus that encircles or binds a part of the body. SEE ALSO: zone. 2. Any ribbon shaped or cordlike anatomic structure that encircles or binds another structure or that connects two or more parts. See fascia,… …   Medical dictionary