Luminous Pencil Beam

From International Dictionary of Marine Aids to Navigation
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urn:mrn:iala:dic:2-1-0095

(Luminous) Pencil Beam

A beam in which the light is concentrated about a single line of direction.




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

Languages

English

ampere

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

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