| absorbance |
Used mostly by chemists, the negative logarithm (base 10) of the transmittance of an absorbing sample, often corrected for reflection by its container. Despite its name, absorbance is a consequence of both scattering and absorption, although scattering is usually assumed to be negligible. To within a constant multiplier, absorbance is absorption optical thickness and depends on the physical thickness of the sample. Compare absorptance.
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| absorption line |
A line of finite width in the absorption spectrum. Absorption lines are characterized by their central wavelength, line intensity, and line width.
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| absorption spectrum |
The detailed dependence on wavelength of the intensity of radiation absorbed by a given medium. Absorption spectra of gases are typically composed of discrete spectral lines and bands of overlapping lines that depend on the molecular or atomic composition of the absorbing substance and that may be used to identify it uniquely. ...
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| absorptivity |
The fraction of incident radiation that is absorbed by matter. Absorptivity may be a function of wavelength and/or direction, and is related to the emissivity of the region by Kirchhoff's law. The absorptivity is identically equal to unity for blackbodies and is independent of wavelength for gray bodies.
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| abstraction |
1. The part of precipitation that does not become direct runoff. 2. The draining of water from a stream into another stream having a more rapid corroding action.
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| ABS | an abstract genre of art |
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| ABS | a painter of abstract pictures |
| ABS | a New York school of painting characterized by freely created abstractions |
| ABS | thinking that is coherent and logical |
| ABS | lost in thought |
| ABS | taken out of or separated from |
| ABS | in an absent-minded or preoccupied manner |
| ABS | preoccupation with something to the exclusion of all else |
| ABS | one who makes abstracts or summarizes information |
| ABS | a general concept formed by extracting common features from specific examples |
| ABS | the act of withdrawing or removing something |
| ABS | an abstract painting |