absorptance

[ ab-sawrp-tuhns, -zawrp- ]

nounPhysics, Optics.
  1. the ratio of the amount of radiation absorbed by a surface to the amount of radiation incident upon it.

Origin of absorptance

1
1930–35; translation of German Absorptionsvermögen.See absorption, -ance

Words Nearby absorptance

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British Dictionary definitions for absorptance

absorptance

absorption factor

/ (əbˈsɔːptəns, -ˈzɔːp-) /


noun
  1. 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

Origin of absorptance

1
C20: absorption + -ance

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