2-1-205
Alternative term: Absorption Factor
The ratio of the absorbed luminous flux (Fa) to the incident flux (Fo).
Symbol: a
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