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.
Historical Examples

Where the curve is highest there the absorption band is thickest; where the curve is lowest there the band is weak.
Poisons: Their Effects and Detection Alexander Wynter Blyth


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  • Absorption costing

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  • Absorption edge

    a discontinuity in the graph of the absorption coefficient of a substance plotted against the wavelength of x-rays being absorbed, representing the minimum energy necessary to free electrons from particular shells of the atoms of the substance.

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