Internal Absorptance

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2-1-210

Internal Absorptance (of a homogeneous non-diffusing plate)

The ratio of the luminous flux absorbed between the entry and exit surfaces of the plate, to the flux which leaves the entry surface.

Symbol: ai ai + Ti = 1

Reference: C.I.E. (modified)




Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)

Contrast

Celsius (previously Centigrade)

Capacitance

charge current

Intensity

Illuminance

Energy

International Association of Marine Aids to Navigation and Lighthouse Authorities - AISM