Lumen

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2-1-020

The SI Unit: of luminous flux. It is the luminous flux emitted within Unit: solid angle (one steradian) by a point source having a uniform luminous intensity of one candela. Definition adopted by the 9th General Conference on Weights and Measures (1948).

Symbol: lm

Reference: C.I.E.




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

International System of Units

Contrast

Celsius (previously Centigrade)

Capacitance

charge current

Intensity

Illuminance

Energy

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