ALL meanings of absorptance

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  • noun absorptance 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 3
  • noun absorptance (optics, physics) Absorbed radiation and incident radiation in a ratio format; a measurement that shows how well a surface absorbs radiation. (First attested in the mid 20th century.). 1
  • noun absorptance the ratio of the amount of radiation absorbed by a surface to the amount of radiation incident upon it. 1
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