absorptance
[ ab-sawrp-tuh ns, -zawrp- ]
/ æbˈsɔrp təns, -ˈzɔrp- /
noun Physics, Optics.
the ratio of the amount of radiation absorbed by a surface to the amount of radiation incident upon it.
Compare
reflectance,
transmittance.
Origin of absorptance
Words nearby absorptance
British Dictionary definitions for absorptance
absorptance
absorption factor
/ (əbˈsɔːptəns, -ˈzɔːp-) /
noun
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
Word Origin for absorptance
C20:
absorption +
-ance