Difference between revisions of "Luminous fan beam"

Latest revision as of 10:00, 1 March 2009

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(Luminous) Fan Beam

A beam in which the light is concentrated in and about a single plane, usually horizontal.

The angular spread in the plane of concentration may cover either 360 degrees or a smaller angle.

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

Revision as of 10:00, 25 February 2009 (view source) Oferiks (talk \| contribs) m (1 revision) ← Older edit	Latest revision as of 10:00, 1 March 2009 (view source) Oferiks (talk \| contribs) m (1 revision)
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