Edison's classical searchlight cart.

Searchlights in action, Gibraltar 1940. (Imperial War Museum)

WWII anti-aircraft searchlight

A searchlight is an apparatus with reflectors for projecting a powerful beam of light of approximately parallel rays in a particular direction, usually devised so that it can be swiveled about. Image File history File links Ed_d21m. ... Image File history File links Ed_d21m. ... Edison is the last name of a famous United States inventor: Thomas Edison Other people known by the name Edison: Charles Edison – son of Thomas Edison and Governor of New Jersey Edison Chen – popular Hong Kong teen idol Edison Carter, character in the television show Max Headroom A number of... Image File history File links Metadata Size of this preview: 800 × 542 pixelsFull resolution (1786 × 1211 pixel, file size: 3. ... Image File history File links Metadata Size of this preview: 800 × 542 pixelsFull resolution (1786 × 1211 pixel, file size: 3. ... The Imperial War Museum is a museum in London featuring military vehicles, weapons, war memorabilia, a library, a photographic archive, and an art collection of 20th century and later conflicts, especially those involving Britain, and the British Empire. ... Image File history File linksMetadata Download high resolution version (768x1024, 108 KB)A WWII anti-aircraft searchlight from the Imperial War Museum at Duxford UK File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... Image File history File linksMetadata Download high resolution version (768x1024, 108 KB)A WWII anti-aircraft searchlight from the Imperial War Museum at Duxford UK File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... Combatants Allied powers: China France Great Britain Soviet Union United States and others Axis powers: Germany Italy Japan and others Commanders Chiang Kai-shek Charles de Gaulle Winston Churchill Joseph Stalin Franklin Roosevelt Adolf Hitler Benito Mussolini Hideki Tōjō Casualties Military dead: 17,000,000 Civilian dead: 33,000... American troops man an anti-aircraft gun near the Algerian coastline in 1943 Anti-aircraft, or air defense, is any method of combating military aircraft from the ground. ... A reflector can mean one of several things: a reflecting telescope a device or a part of an antenna that reflects radio waves a device that causes reflection, for example, a mirror or a retroreflector a 1981 album by Pablo Cruise In LAPACK the term reflector with the types block... This article does not cite any references or sources. ...

Military use of searchlights started late 19th century, when battleships and other major vessels were equipped for finding small attacking torpedoboats. They saw use in the Russo-Japanese War 1904 - 05. Searchlights were also installed on many coastal artillery batteries for aiding night combat. A torpedo boat is a relatively small and fast naval ship designed to launch torpedoes at larger surface ships. ...

Searchlights were first used in World War I to create "artificial moonlight" to enhance opportunities for night attacks, a practice which continued in World War II. Artificial moonlight was invented by historian and tank warfare theorist, Gen. J.F.C. Fuller. “The Great War ” redirects here. ... Combatants Allied powers: China France Great Britain Soviet Union United States and others Axis powers: Germany Italy Japan and others Commanders Chiang Kai-shek Charles de Gaulle Winston Churchill Joseph Stalin Franklin Roosevelt Adolf Hitler Benito Mussolini Hideki Tōjō Casualties Military dead: 17,000,000 Civilian dead: 33,000... Soldiers from U.S. 3d Armored Cavalry Regiment provide overwatch for other troops with their M1 Abrams main battle tank in Biaj, Iraq. ... Major-General John Frederick Charles Fuller, CB, CBE, DSO, commonly J.F.C. Fuller, (September 1, 1878–February 10, 1966), was a British major-general, military historian and strategist, notable as an early theorist of modern armoured warfare, including categorising principles of warfare. ...

Searchlights were used extensively in defence against nighttime aerial bomber raids around the time of World War II. In particular, pairs of searchlights spaced a known distance apart were used to determine (via triangulation) the altitude of enemy bombers, so that the fuses on anti-aircraft flak shells could be set appropriately for maximum effect. In addition, the lights may have helped blind bombardiers using optical bombsights. For other uses, see Bomber (disambiguation). ... Combatants Allied powers: China France Great Britain Soviet Union United States and others Axis powers: Germany Italy Japan and others Commanders Chiang Kai-shek Charles de Gaulle Winston Churchill Joseph Stalin Franklin Roosevelt Adolf Hitler Benito Mussolini Hideki Tōjō Casualties Military dead: 17,000,000 Civilian dead: 33,000... Triangulation can be used to find the distance from the shore to the ship. ... Altitude is the elevation of an object from a known level or datum. ... FLAK was a punk rock side project of members of the band Machinae Supremacy in 2001. ... It is proposed that this article be deleted, because of the following concern: WP is not a dictionary If you can address this concern by improving, copyediting, sourcing, renaming or merging the page, please edit this page and do so. ...

Searchlights were occasionally used tactically in ground battles. One famous occasion was the Soviets' use of seachlights during the Battle of Berlin in April 1945. 143 searchlights were directed at the German defense force across the Neisse River with the aim of temporarily blinding them during a Soviet offensive. However, the morning fog diffused the light and silhouetted the attacking Soviet forces, making them clearly visible to the Germans. The Soviets suffered heavy losses as a result and were forced to delay their investment of the city. Combatants Soviet Union Poland Nazi Germany Commanders 1st Belorussian Front – Georgiy Zhukov 2nd Belorussian Front – Konstantin Rokossovskiy 1st Ukrainian Front – Ivan Konev Army Group Vistula – Gotthard Heinrici then Kurt von Tippelskirch[2] Army Group Centre – Ferdinand Schörner Berlin Defense Area – Helmuth Reymann then Helmuth Weidling #[3] Strength 2,500...

World War II-era searchlights include models manufactured by General Electric and by the Sperry Company, (of gyroscope fame). These were mostly of 60" (152.4 cm) diameter with rhodium plated parabolic mirror, reflecting a carbon arc discharge. Peak output was 800,000,000 candlepower. It was powered by a 15 KW generator and had an effective beam visibility of 28 to 35 miles (45 to 56 km) in clear low humidity conditions.^[1] Combatants Allied powers: China France Great Britain Soviet Union United States and others Axis powers: Germany Italy Japan and others Commanders Chiang Kai-shek Charles de Gaulle Winston Churchill Joseph Stalin Franklin Roosevelt Adolf Hitler Benito Mussolini Hideki Tōjō Casualties Military dead: 17,000,000 Civilian dead: 33,000... “GE” redirects here. ... The candela (symbol: cd, Latin for candle) is one of the seven SI base units. ...

Today, searchlights are used in advertising, for instance by automobile dealers; the beam of light is visible over a large area, and (at least in theory) interested persons can find the dealer or store by following the beam to its source. This was once common for movie premieres; the waving searchlight beams still can be seen as a design element in the logo of the 20th Century Fox movie studio. “Advert” redirects here. ... “Car” and “Cars” redirect here. ... This article is about motion pictures. ... Premiere, from French language première meaning first, generally means a first performance. Premieres for theatrical, musical, and other productions are often extravagant affairs, attracting large numbers of socialites and much media attention. ... Twentieth (20th) Century Fox Film Corporation (known from 1935 to 1985 as Twentieth Century-Fox Film Corporation) is one of the six major American film studios. ... A movie studio is a controlled environment for the making of a film. ...

Searchlight - an organisation set up to stop the BNP. BNP may be: British National Party, a British nationalist political party British National Party (1960s), a British political party active in the 1960s Bahujana Nidahas Peramuna, a Sri Lankan political party Balochistan National Party, a political party in Pakistan Bandipur National Park, a national park in India Banff National...

See also

• Military applications of searchlight
  • Canal Defence Light
  • Leigh light
  • Turbinlite

Lighting and Lamps v • d • e
Incandescent:	Conventional - Halogen - Parabolic aluminized reflector (PAR)
Fluorescent:	Compact fluorescent (CFL) - Linear fluorescent - Induction lamp
Gas discharge:	High-intensity discharge (HID) - Mercury-vapor - Metal-halide - Neon - Sodium vapor
Electric arc:	Arc lamp - HMI - Xenon arc - Yablochkov candle
Combustion:	Acetylene/Carbide - Candle - Gas lighting - Kerosene lamp - Limelight - Oil lamp - Safety lamp - Petromax - Rushlight
Other types:	Sulfur lamp - Light-emitting diode (LED) - LED lamp (SSL) - Plasma - Electroluminescent wire - Chemiluminescence - Deuterium arc lamp - Radioluminescence
Items used to manipulate resultant light:	Mirrors - Prism - Optical fiber - Lens

Canal Defence Light (CDL) was a British secret weapon of the Second World War. ... The Leigh Light (abbreviated L/L) was a British World War II era anti submarine device used in the Second Battle of the Atlantic. ... The Helmore/GEC Turbinlite was a a 2,700 million candela (2. ... Not to be confused with lightning. ... A lamp, in technical usage, is a replaceable component such as an incandescent light bulb, which is designed to produce light from electricity. ... Light bulb redirects here. ... The incandescent light bulb uses a glowing wire filament heated to white-hot by electrical resistance, to generate light (a process known as thermal radiation). ... A Parabolic Aluminized Reflector light, or PAR light, is a type of light commonly used in motion picture production when a substantial amount of light is required for a scene. ... Image File history File links Download high resolution version (768x1276, 92 KB) Description: en: de: Glühlampe der Marke Neolux mit klarem Glaskolben. ... A spiral type compact fluorescent lamp. ... Fluorescent lamps in Shinbashi, Tokyo, Japan Assorted types of fluorescent lamps. ... In contrast with all other electrical lamps that use electrical connections through the lamp envelope to transfer power to the lamp, in electrodeless lamps the power needed to generate light is transferred from the outside of the lamp envelope by means of (electro)magnetic fields. ... 15 kW Xenon short-arc lamp used in IMAX projectors High-intensity discharge (HID) lamps include these types of electrical lamps: mercury vapor, metal halide (also HQI), high-pressure sodium (Son), low-pressure sodium (Sox) and less common, xenon short-arc lamps. ... A Mercury-vapor lamp is a gas discharge lamp which uses mercury in an excited state to produce light. ... Example of a light source using a broad spectrum metal halide lamp pointing upward towards the sky. ... Lighting neon lamp, two 220/230 volt and 110 V neon lamps and a screwdriver with neon lamp inside A neon lamp is a gas discharge lamp containing primarily neon gas at low pressure. ... A LPS / SOX streetlight at full power A sodium vapor lamp is a gas discharge lamp which uses sodium in an excited state to produce light. ... 15 kW Xenon short-arc lamp. ... An HMI on a stand. ... This section may require cleanup to meet Wikipedias quality standards. ... A Yablochkov candle (sometimes electric candle) is a type of electric carbon arc lamp, invented in 1876 by Pavel Yablochkov. ... Lit carbide lamp A French manufactured Carbide of Calcium lamp on a bicycle Carbide of Calcium lamp in a coal mine Carbide lamps also known as Acetylene Gas lamps are simple lamps that produce and burn acetylene gas (C2H2) which is created by the reaction of calcium carbide (CaC2) with... For other uses, see Candle (disambiguation). ... Gas lighting is the process of burning piped natural gas or coal gas for illumination. ... Swiss kerosene lamp. ... This article does not cite any references or sources. ... Antique bronze oil lamp with Christian symbol (replica) A terra-cotta oil lamp, Antique oil lamp (replica) An oil lamp is a simple vessel used to produce light continuously for a period of time from a fuel source. ... Safety lamp is the name of a variety of lamps for safety in coal-mines against coal dust, methane, or firedamp, a highly explosive mixture of natural gas apt to accumulate in them. ... It has been suggested that this article or section be merged into Kerosene lamp. ... A Rushlight is a type of candle formed using the dried pith of the rush plant as its wick. ... LBNL researcher examines prototype sulfur lamp. ... “LED” redirects here. ... This article or section contains too much jargon and may need simplification or further explanation. ... Solid State Lighting (SSL) refers to a type of lighting that utilizes light-emitting diodes (LEDs), organic light-emitting diodes (OLED), or polymer light-emitting diodes as sources of illumination rather than electrical filaments or gas. ... This article or section does not cite its references or sources. ... Electroluminescent wire (often abbreviated to EL wire) is a thin copper wire coated in a phosphor which glows when an AC voltage is applied to it. ... A chemoluminescent reaction carried out in an erlenmeyer flask producing a large amount of light. ... Emission spectrum of an ultraviolet deuterium arc lamp clearly showing characteristic hydrogen emission lines (sharp peaks at 656 nm and 486 nm) and continuum emission in the ~160-400 nm region. ... Radioluminescence is the phenomenon by which luminescence is produced in a material by the bombardment of ionizing radiation such as beta particles. ... A mirror is a reflective surface that is smooth enough to form an image. ... If a shaft of light entering a prism is sufficiently narrow, a spectrum results. ... Optical fibers An optical fiber (or fibre) is a glass or plastic fiber designed to guide light along its length by confining as much light as possible in a propagating form. ... This article is about the optical device. ...

Notes

1. ^ Carbon arc searchlight forum

External links

• Sperry searchlight restoration project
• Elmer A. Sperry case file at the Franklin Institute archive of historical records of his consideration for a Franklin award in 1920 due to his invention of an electric searchlight