| NOUN | quantity | absorptance, absorption coefficient, coefficient of absorption | a measure of the rate of decrease in the intensity of electromagnetic radiation (as light) as it passes through a given substance |
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| Meaning | A measure of the rate of decrease in the intensity of electromagnetic radiation (as light) as it passes through a given substance; the fraction of incident radiant energy absorbed per unit mass or thickness of an absorber. | |
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| Example | "absorptance equals 1 minus transmittance" | |
| Synonyms | absorption coefficient, coefficient of absorption | |
| Broader | coefficient | A constant number that serves as a measure of some property or characteristic / characteristic |
| Spanish | coeficiente de absorción | |
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