Difference between revisions of "Absorption"
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Absorption
1. The process by which radiant energy is absorbed and converted
into other forms of energy. See
attenuation.
Absorption
takes place only after the radiant flux enters a medium and thus
acts only on the entering flux not on the incident flux, some
of which may be reflected at the surface of the medium. A substance
which absorbs energy may also be a medium of
refraction, diffraction,
or scattering; these processes, however, involve no energy retention
or transformation and are to be clearly differentiated from absorption.
2. In general, the taking up or assimilation of one substance
by another. See
sorption,
adsorption.
3. In vacuum technology, gas entering into the interior of
a solid.
References
This article is based on NASA's Dictionary of Technical Terms for Aerospace Use
