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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.
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]
High water in 1885 caused such severe damage that the house was deemed unfit for occupancy, and a temporary shelter was built to house the keeper until a replacement light could be built. The appropriation for the Table Bluff Light finally came through in 1891, and in October of the following year the lens of the Humboldt Harbor Light was moved ...
The Yaquina Head Light, also known early in its existence as the Cape Foulweather Lighthouse (though Cape Foul Weather is 4 miles to the north) is a lighthouse on the Oregon Coast of the United States, established in 1873. It is located in Lincoln County, near Newport at Yaquina Head. The tower stands 93 feet (28 m) tall, and is the tallest ...
High-intensity discharge lamps are a type of arc lamp. Brand new high-intensity discharge lamps make more visible light per unit of electric power consumed than fluorescent and incandescent lamps, since a greater proportion of their radiation is visible light in contrast to infrared. However, the lumen output of HID lighting can deteriorate by ...
A high mast light in Toronto High-mast lighting tower in a stadium A six-lamp configuration on a mast High-mast lighting used on Ontario Highway 401 at night High-mast lighting used on Ontario Highway 401 during the day High-mast lights in conjunction with shorter lampposts at the Tainan System Interchange (Chinese: 台南系統交流道) in Sinshih District, Tainan, Taiwan A light tower on ...
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