Difference between revisions of "Flashing (Optical) Apparatus"

From International Dictionary of Marine Aids to Navigation
Jump to navigation Jump to search
 
m (1 revision)
 
(4 intermediate revisions by the same user not shown)
Line 18: Line 18:


{{languages|Flashing (Optical) Apparatus}}
{{languages|Flashing (Optical) Apparatus}}
[[Category:2.2 Optical Apparatus]
[[Category:2.2 Optical Apparatus]]
[[Category:Alphabetical Index]]
[[Category:Alphabetical Index]]
[[Category:IALA Dictionary 1970-89 Edition]]
[[Category:IALA Dictionary 1970-89 Edition]]

Latest revision as of 10:01, 1 March 2009

2-2-180

An optical apparatus which produces an intermittent light.


Note 1: An intermittent light may be produced by several methods, e.g.

  • a. by an optical system producing pencil beams which revolve about a vertical axis.
  • b. by alternately lighting and extinguishing the luminous source. (2-4-100)
  • c. by intermittently placing an opaque screen in the path of the light. (2-4-110, 2-4-115, 2-4-120)


Note 2: A "flashing (optical) apparatus" may produce any intermittent light character. The French term Appareil a Eclats is, however, restricted to apparatus producing a flashing light character. (2-5-145)




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