Illuminant

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2-1-450

Radiant energy with a relative spectral distribution defined over the wavelength range that influences object colour perception.


Note: In English, this term is not restricted to this sense, but is a general term used for any kind of light falling on a body or scene, and is also used to refer to the light source itself, including its filters if any.

Reference: C.I.E.




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