Internal Transmittance

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2-1-190

Internal Transmittance (of a homogeneous non-diffusing plate)

The ratio of the luminous flux (F2) reaching the exit surface of the plate to the flux (F1) which leaves the entry surface.

Symbol: Ti

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