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Edison's classic searchlight cart.
A searchlight (or spotlight) is an apparatus that combines a bright light source with some form of curved reflector or other optics to project a powerful beam of light of approximately parallel rays in a particular direction, usually constructed so that it can be swiveled about.
[edit] Military use
The Royal Navy used searchlights in 1882 to prevent Egyptian forces from manning artillery batteries at Alexandria. Later that same year, the French and British forces landed troops under searchlights.[1]
By 1907 the value of searchlights had become widely recognized. One recent use was to assist attacks by torpedo boats by dazzling gun crews on the ships being attacked. Other uses included detecting enemy ships at greater distances, as signaling devices, and to assist landing parties. Searchlights were also used by battleships and other capital vessels to locate attacking torpedo boats and were installed on many coastal artillery batteries for aiding night combat. They saw use in the Russo-Japanese War from 1904–05.[2]
[edit] World War I
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 term "artificial moonlight" was used to distinguish illumination provided by searchlights from that provided by normal moonlight, which was referred to as "movement light" in nighttime manoeuvers.[3]
[edit] World War II
Searchlights were used extensively in defense against nighttime bomber raids during World War II. Controlled by sound locators and radars, searchlights could track bombers, indicating targets to antiaircraft guns and night fighters, and dazzling crews.
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 invasion of the city.[citation needed]
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 candela. 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.
[edit] Non-military use
Searchlights demonstrating the height of Tokyo Sky Tree before its construction in 2007
Today, searchlights are used in advertising, fairs, festivals and other public events. Their use was once common for movie premieres; the waving searchlight beams can still be seen as a design element in the logo of the 20th Century Fox movie studio, and Fox television network. The world's most powerful searchlight today beams from the top of the pyramid-shaped Luxor Hotel in Las Vegas. The beam concentrates about 25,000,000 lumens from 39 7kW xenon lamps into its beam of about 40,000,000,000 candela. The brightness emanating from the Luxor lamp room is about twice that which emanates from an equal area of the sun's surface (about 95,000,000 cd/ft2 versus 45,000,000 cd/ft2).
[edit] See also
[edit] References
- FM 4-29 seacoast searchlights
- FM 4-111 Coast Artillery Field Manual, Antiaircraft Artillery, Position Finding and Control, Antiaircraft Search-lights (US War Department, 1940)
- FM 4-115
- ^ Sterling, Christopher H.. Military Communications. ABC-CLIO. pp. 395–396. ISBN 978-1-85109-732-6.
- ^ Barry, Richard (1905). Port Arthur: A Monster Heroism. Moffat, Yard & Co.. pp. 324–325.
- ^ "Artificial Moonlight". Tactical and Technical Trends (US Army Military Intelligence Corps) (57). April 1945.
[edit] External links
 Searchlight - Contagious. ResidentEvilMovies.net brings you...Searchlight on YouTube. LYRICS --- I'm running and i feel times running out There were twelve of us, we're down to seven now I'm fearing exhaustion The temperature is dropping down Is anybody with me now? All I really wanted was the cure Something was written They tried to erase us Now that they govern here to contain us Bodies were lifted Well past the stages And like the virus, We're much too contagious Are we over? Now we're fighting, there's no way that this is real We are not actors, this is no movie reel The dead were all rising The federations heresy is now the state emergency I want my family Thirty seven hours now, the whole world's rearranging My live heartbeat's changing This wasn't me now This isn't me We're not getting out so much for getting out They built up the walls and left us for ruins There's no use standing We were all falling out We're over There's no use standing We were all falling out We're overdue |  Bad Romance Cover/Parody by Searchlight FREE DOWNLOAD OF SONG!! go to: searchlight.bandcamp.com Searchlight on Twitter www.twitter.com Searchlight on Myspace: www.myspace.com Searchlight on YouTube: www.youtube.com Be sure to check out Searchlight's entire album at searchlight.bandcamp.com. Searchlight are a very talented band from Las Vegas, NV who have been featured on the Resident Evil 3 Soundtrack (Contagious) along with opening for many great acts such as Gavin Rosdale and Kiss. |  Searchlight Rental, Sky Scan 4000, MA Searchlight This video shows the Chauvet Sky Scan at 4K at a local car dealership in our area for a promotion. MA Searchlight with Crystal Entertainment Services offers these units for rentals. The night was hazy so it shows a strong searchlight beam. The beam could be seen from from 3 miles away. On a clear evening we have seen the searchlight beam at over 5 miles and people have reported seeing the searchlight beam over 10 miles away. We have not had a chance to verify this but it might be possible if really clear and dark out perhaps. Visit our sites for more pictures and video links www.masearchlights.com and www.crystalentertainmentservices.com |  Deerhoof "Chandelier Searchlight" Directed by Clyde Petersen. DOWNLOAD THIS MP3: www.virb.com Offend Maggie, 2008 Kill Rock Stars BUY: www.buyolympia.com |  Powercore Combiners Searchlight w/ Backwind minicon A look at the autobot helicopter from the Powercore line! |  MEG - 07 SEARCHLiGHT MEG - STEP SEARCHLiGHT Migi ni hanbun gururi to meguttara Ureshiku naru youna asa Shiranu ma ni sururi suberikonde iru Yume no naka made Kotae ga soredake ka douka wa wakaranai kedo Tabun isshoni iretara Sonna koto kangaeteru Kono hiroi umi no soko Maru de nami no oto SAACHIRAITO Hontou no koto mite mitai Shinjitsu wa yami no naka terashite Kimi no koto sagashite Aruite iru mitai da Ima mirai no KII、dokoni Saa sagasou Nee atashi no KII、soko ni? Nee、nee、nee Nagai PEEJI no saigo mekuttara Sabishiku naru youna gogo Eien wa aru to omoikonde ita Sore wa dokomade? Korekara shiawase ka douka wa wakaranai kedo Tabun isshoni iretara Sonna yokan shinjite iru Kono hiroi umi no soko Maru de nami no oto SAACHIRAITO Hontou no koto mite mitai Shinjitsu wa yami no naka terashite Kimi no koto sagashite Aruite iru mitai da Ima mirai no KII、dokoni Saa sagasou Nee atashi no KII、soko ni? Nee、nee、nee? |  Hyetal-Searchlight album: Broadcast (2011) label: Black Acre soundcloud.com support Hyetal !! enjoy.. |  Xenon short arc lamp - DIY searchlight Same setup as my last video, a 1.6kW xenon short arc lamp, being run at about 1kW. A Fresnel lens and mirror directs the light up into the sky. |  15 Years of Fox Searchlight A montage celebrating 15 glorious years of Fox Searchlight Pictures. Full list of films used: 12" - Sexy Beast, 28 Days Later, The Last King of Scotland 30" - The Full Monty, Bend It Like Beckham, In America, The Wrestler, Stealing Beauty, The Darjeeling Limited, Millions, Night Watch 1'07"- Sideways, Sunshine, Waking Ned Devine, The History Boys, Ameila, Little Miss Sunshine, Garden State 1'32" - Thirteen, The Namesake, Titus, Thank You For Smoking, Antwone Fisher, Street Kings, The Dancer Upstairs, The Good Thief, Waitress, 500 Days of Summer 2'00" - Best Laid Plans, Kinsey, The Savages, One Hour Photo, The Good Girl, The Clearing, Quills, Super Troopers, Once, Boys Don't Cry, Whip It, Notorious 2'30" - Slumdog Millionaire, Juno, A Midsummer Night's Dream, The Secret Life of Bees, Water, Sideways, Crazy Heart, The Wrestler 3'00" - Fantastic Mr Fox, Stealing Beauty, I ♥ Huckabees, Notes on a Scandal, The Dreamers, Slumdog Millionaire, The Ringer, 500 Days of Summer, The Namesake, Napoleon Dynamite, Little Miss Sunshine Commissioned by Fox Searchlight, © 2010. |  Escape Goat - Indie Games Searchlight I return to XBING for what else? Flying Goats! You can find out more about Escape Goat from Xbox and Magical Time Bean! marketplace.xbox.com www.magicaltimebean.com Video by Mark Carr addatworkproductions (at) yahoo (dot) com Feed My Ego (and updates on new stuff)! www.facebook.com twitter.com |
 Hollywood Reporter |
Hollywood Reporter
Wed, 16 May 2012 18:47:56 -0700
... best known for creating and starring in HBO's Curb Your Enthusiasm and co-creating NBC's classic sitcom Seinfeld, is in negotiations to star in an untitled comedy that Greg Mottola is in negotiations to direct for Fox Searchlight.
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Record-Searchlight
Fri, 18 May 2012 00:11:57 -0700
By Joe Szydlowski Greg Barnette/Record Searchlight Bareback rider Mac Erickson, of Sundance, Wyo., tapes his arm while Zac Elliott, of Thatcher, Utah, looks on Thursday at the Redding Rodeo Grounds. Both were preparing to compete in the Redding Rodeo.
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MarketWatch (press release)
Tue, 15 May 2012 04:01:33 -0700
SALEM, NH, May 15, 2012 (BUSINESS WIRE) -- On Call International, the leading provider of medical, security and travel assistance has introduced a dynamic new risk mitigation and traveler tracking tool, Searchlight. This highly anticipated service ...
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EON: Enhanced Online News (press release)
Wed, 16 May 2012 00:00:55 -0700
SALEM, NH--(EON: Enhanced Online News)--On Call International, the leading provider of medical, security and travel assistance has introduced a dynamic new risk mitigation and traveler tracking tool, Searchlight. This highly anticipated service ...
|  USA TODAY |
San Jose Mercury News
Wed, 09 May 2012 01:02:33 -0700
By John Horn In this film image released by Fox Searchlight films, Judi Dench, left, and Celia Imrie are shown in a scene from "The Best Exotic Marigold Hotel." (AP Photo/Fox Searchlight Films, Ishika Mohan) About three years ago, producer Graham ...
|  Kansas City Star |
Detroit Free Press
Thu, 17 May 2012 23:02:27 -0700
Fox Searchlight By Claudia Puig "Sound of My Voice" is powered by a twentysomething, angelic-looking cult leader who mixes down-to-earth humor with an abiding melancholy and a mysterious ability to seem to know people's innermost thoughts.
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Record-Searchlight
Fri, 18 May 2012 00:02:49 -0700
By Laura Christman Andreas Fuhrmann/Record Searchlight Ashley Sarmanto, 17, of Redding, gets special glasses to watch Sunday's solar eclipse from Whiskeytown National Recreation Area volunteer Dolores Fremter at the park's visitors center.
|  TribLocal |
NewsOK.com
Thu, 17 May 2012 16:41:02 -0700
FOX SEARCHLIGHT PHOTO Ishika Mohan Rich with undercurrents of faded colonialism and emerging Third World vitality, “The Best Exotic Marigold Hotel” placed Dench and Wilkinson in a heady ensemble of fine English actors (including Maggie Smith, ...
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