Light (2)

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2-1-005 Alternative terms: Visible Radiation (G.B.), Visible Radiant Energy (U.S.A.)

Any radiation capable of causing a visual sensation directly.


Note: The limits of the spectral range of visible radiation are not well-defined and may vary according to the user. The lower limit is generally taken between 380 and 400 nm and the upper limit between 760 and 780 nm.

1 nanometre (nm) = 10-9m = 1 millimicron.

Reference: C.I.E. (modified)




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

centre of gravity

Centre of buoyancy

South

ampere

nanometre (wavelength)

Contrast

Celsius (previously Centigrade)

Capacitance

charge current

Intensity

Illuminance

Energy

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