| 释义 |
absorptance
ab·sorp·tance A5028900 (əb-zôrp′təns, -sôrp′-)n. The ratio of absorbed to incident radiation.
[absorpt(ion) + -ance.]absorptance (əbˈsɔːptəns; -ˈzɔːp-) or absorption factorn (General Physics) physics a measure of the ability of an object to absorb radiation, equal to the ratio of the absorbed radiant flux to the incident flux. For a layer of material the ratio of the flux absorbed between the entry and exit surfaces of the layer to the flux leaving the entry surface is the internal absorptance. Symbol: α Compare reflectance, transmittance[C20: absorption + -ance]ab•sorp•tance (æbˈsɔrp təns, -ˈzɔrp-)
n. the ratio of the amount of radiation absorbed by a surface to the amount of radiation incident upon it. [1930–35] Thesaurus| Noun | 1. |  absorptance - 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; "absorptance equals 1 minus transmittance"absorption coefficient, coefficient of absorptioncoefficient - a constant number that serves as a measure of some property or characteristic |
absorptance
absorptance[əb′sȯrp·təns] (physics) The ratio of the total unabsorbed radiation to the total incident radiation; equal to one (unity) minus the transmittance. absorptanceIn illumination engineering, the ratio of the absorbed flux to the incident flux.AcronymsSeeAabsorptance
Related to absorptance: transmittanceSynonyms for absorptancenoun a measure of the rate of decrease in the intensity of electromagnetic radiation (as light) as it passes through a given substanceSynonyms- absorption coefficient
- coefficient of absorption
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