Refractor

From International Dictionary of Marine Aids to Navigation
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2-1-235

A device in which the phenomenon of refraction is used to alter the spatial distribution of the luminous flux from a source.

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