high-intensity searchlight

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• searchlight — /serrch luyt /, n. 1. a device, usually consisting of a light and reflector, for throwing a beam of light in any direction. 2. a beam of light so thrown. [1880 85; SEARCH + LIGHT1] * * * ▪ lighting       high intensity electric light with a… …   Universalium

• North American railroad signals — Main article: North American railway signaling Baltimore and Ohio Railroad Color Position Light bracket masts at Magnolia, West Virginia North American railroad signals generally fall into the category of multi headed electrically lit units… …   Wikipedia

• Inner German border — Innerdeutsche Grenze North and central Germany …   Wikipedia

• Lasers and aviation safety — Under certain conditions, laser light or other bright lights (spotlights, searchlights) directed at aircraft can be a hazard. The most likely scenario is when a bright visible laser light causes distraction or temporary flash blindness to a pilot …   Wikipedia

• Directed-energy weapon — This article is about practical experiments with energy weapons. For fictional uses, see raygun. Humvee with Active Denial System mounted A directed energy weapon (DEW) emits energy in an aimed direction without the means of a projectile. It… …   Wikipedia

• Light fixture — This article is about architectural light fixtures. For stage lighting, see Stage lighting instrument. Many various light fixtures A light fixture, light fitting, or luminaire is an electrical device used to create artificial light and/or… …   Wikipedia

• Arc lamp — The electric arc in an arc lamp consists of gas which is initially ionized by a voltage and is therefore electrically conductive. To start an arc lamp, usually a very high voltage is needed to ignite or strike the arc. This requires an electrical …   Wikipedia

• Tribute in Light — The Tribute in Light is a temporary art installation of 88 searchlights placed next to the site of the World Trade Center from March 11 to April 14, 2002 to create two vertical columns of light in remembrance of the September 11, 2001 attacks.… …   Wikipedia

• Elmer Ambrose Sperry — Infobox Engineer image size = 150px caption = PAGENAME name = PAGENAME nationality = United States birth date = October 12, 1860 birth place = Cortland, New York death date = June 16, 1930 death place = Brooklyn, New York education =Cornell… …   Wikipedia

• Ceiling projector — The ceiling projector or cloud searchlight is used to measure the height of the base of clouds (called the ceiling) above the ground. It is used in conjunction with an alidade, usually positioned 1000 ft (304.8 m) away and wherever possible set… …   Wikipedia

• Sperry, Elmer Ambrose — ▪ American inventor baptized Oct. 12, 1860, Cortland, N.Y., U.S. died June 16, 1930, Brooklyn, N.Y.       versatile American inventor and industrialist, best known for his gyroscopic compasses and stabilizers.       As a boy, Sperry developed a… …   Universalium