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A high-pressure sodium street light in Toronto A high-pressure sodium-vapor lamp An HPS lamp that isn't entirely off. A sodium-vapor lamp is a gas-discharge lamp that uses sodium in an excited state to produce light at a characteristic wavelength near 589 nm. Two varieties of such lamps exist: low pressure, and high pressure.
A light fixture (US English), light fitting (UK English), or luminaire is an electrical lighting device containing one or more light sources, such as lamps, and all the accessory components required for its operation to provide illumination to the environment. [1] All light fixtures have a fixture body and one or more lamps.
Like other gas-discharge lamps such as the very-similar mercury-vapor lamps, metal-halide lamps produce light by ionizing a mixture of gases in an electric arc.In a metal-halide lamp, the compact arc tube contains a mixture of argon or xenon, mercury, and a variety of metal halides, such as sodium iodide and scandium iodide. [7]
The skyway and YBITS structures have custom lighting using 48,000 high-performance LEDs grouped in 1521 fixtures, most of which are mounted on 273 poles. [76] These fixtures were designed by Moffatt & Nichol [77] and built by Valmont Industries. Within a specific fixture the beam pattern of each LED is restricted by a masking structure.
A test conducted on January 24, 2013 Opening on March 6, 2013 A time lapse image of Market Street, with The Bay Lights in the background. The Bay Lights was a site-specific monumental light sculpture and generative art installation on the western span of the San Francisco–Oakland Bay Bridge, designed to commemorate the 75th anniversary of its opening.
Designed by I.M. Pei & Partners. Formerly known as CenTrust Tower and Bank of America Tower. The building contains the Knight Center Metromover station. 216 ultra-modern LED fixtures placed on the setbacks and rooftops of neighboring blocks light the tower in multicolored displays. [46] [47] 22 Marinablue: 615 (187) 57 2007 Park West [48] [49] 23
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