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absorption band

noun, Physics.
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.
Origin of absorption band
1865-70 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for absorption band
  • H-aggregates have a blue-shifted absorption band, relative to the monomeric dye absorption wavelength.
  • The upper line is a straight line continuum whose end-points are defined by the reflectance on either side of the absorption band.

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