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The surveys revealed that high-mast lighting was by far the preferred method of lighting. [3] By 1967, Europe was known to have high-mast illumination technology in practice. 1968 saw the first permanent US installations of high-mast illumination starting in Auburn, Washington south of Seattle. The first American towers were 100 ft (30 m) tall ...
A light tower In front of City Hall, Detroit, Michigan, about 1900. Detroit, Michigan, had a particularly extensive system of light towers, inaugurated in 1882. [6] 122 towers, 175 feet (53 m) tall and 1,000–1,200 feet (300–370 m) apart in downtown Detroit, were shorter, less powerful, and twice as far apart as typically found elsewhere. [7]
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Originally designed to view clouds by moonlight, the OLS is also used to map the locations of permanent lights on the Earth’s surface. The brightest areas of the Earth are the most urbanized, but not necessarily the most populated. (Compare western Europe with China and India.) Cities tend to grow along coastlines and transportation networks.
The common high white strobe flashes 40 times per minute, at an intensity of 270,000 candelas for daytime, 20,000 candelas at twilight, and 2,000 candelas at nighttime. [1] Dual lighting is a system in which a structure is equipped with white strobes for daytime use, and red lights for nighttime use. In urban areas, these are commonly preferred ...
Guyed Mast 610.5 m: KGLK-FM Lake Jackson Tower: Lake Jackson, Texas: Guyed Mast 610 m: Petronius Platform: Gulf of Mexico: Oil Platform approx. 75 meters visible above water surface 609.6 m: KCAU TV Tower: Sioux City, Iowa: Guyed Mast 609.6 m KATV Tower: Redfield, Arkansas: Guyed Mast collapsed on January 11, 2008 609.6 m WECT TV6 Tower: Colly ...
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Light mast without lamps Light mast at stadium. Light mast is a tall lighting specified [clarification needed] mast, which has several big searchlights on top of it. Light masts illuminates large areas and are possible to move, which is why they are used (for example) as farming, construction and emergency works implement.