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 sh-lls of the atoms of the substance.

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  • Absorption dynamometer

    a device for measuring the torque or power of an engine in a process in which the energy supplied to the device by the engine is absorbed.

  • Absorption hygrometer

    a hygrometer that uses a hygroscopic chemical to absorb atmospheric moisture.

  • Absorption nebula

    . a cloud of interstellar gas and dust that absorbs and thus obscures the light from stars behind it, appearing as a dark patch in front of a bright nebula or in an otherwise bright area of sky. noun a type of nebula that is observed by its blocking of radiation from other sources see […]

  • Absorption spectrum

    the spectrum formed by electromagnetic radiation that has p-ssed through a medium in which radiation of certain frequencies is absorbed. historical examples the liquid is without colour, and gives no absorption spectrum. encyclopaedia britannica, 11th edition, volume 16, slice 7 various this colour possesses an absorption spectrum (figured at p. 55). poisons: their effects and […]

  • Absorptive

    able or tending to ; . historical examples their clay seemed like some other kinds, which have their absorptive powers strengthened by the more they take up. the red acorn john mcelroy why does under-draining increase the absorptive power of the soil? the elements of agriculture george e. waring considering epithelium from the point of […]


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