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As demand for the fixtures grew, Kelly began manufacturing reproduction vintage lighting in a Portland factory and selling it nationally through a mail-order catalog. A website was added in 1997, followed by a store in Seattle in 2004, [ 3 ] and a Los Angeles store located in the Helms Bakery buildings in late 2011, [ 4 ] along with a Berkeley ...
In the 1970s, Thorn Lighting introduced an energy-saving 8 ft retrofit tube in Europe. Designed to run on the existing 125 W (240 V) series ballast but with a different gas fill and operating voltage, the tube operated at only 100 W. Increased efficiency meant that the tube produced only 9% lumen reduction for a 20% power reduction. [ 7 ]
An electric light, lamp, or light bulb is an electrical component that produces light. It is the most common form of artificial lighting . Lamps usually have a base made of ceramic , metal, glass, or plastic which secures the lamp in the socket of a light fixture , which is often called a "lamp" as well.
NEMA wattage labels are standardized labels defined by the National Electrical Manufacturers Association (NEMA) used on street lighting fixtures to indicate the wattage of the lamp for maintenance purposes. Additionally, various colors are used to identify what type of lamp the fixture uses.
The spectrum of light emitted from a fluorescent lamp is the combination of light directly emitted by the mercury vapor, and light emitted by the phosphorescent coating. The spectral lines from the mercury emission and the phosphorescence effect give a combined spectral distribution of light that is different from those produced by incandescent ...
Flat-wick lamps have the lowest light output, center-draft round-wick lamps have 3–4 times the output of flat-wick lamps, and pressurized lamps have higher output yet; the range is from 8 to 100 lumens. A kerosene lamp producing 37 lumens for 4 hours per day for a month (120 hours) consumes about 3 litres (6.3 US pt; 5.3 imp pt) of kerosene.
Guy Chauvet (1933–2007), French tenor; Jules Chauvet (1907-1989), French winemaker; Patricia Chauvet (born 1967), French alpine skier; Pierre Chauvet (cross-country skier), French cross-country skier, two-time Kilomètre vertical de Fully winner; Pierre Chauvet (racing driver), pseudonym of Friedrich Glatz (1943–2002), Austrian racing driver
The Chauvet-Pont-d'Arc Cave (French: Grotte Chauvet-Pont d'Arc, French pronunciation: [ɡʁɔt ʃovɛ pɔ̃ daʁk]) in the Ardèche department of southeastern France is a cave that contains some of the best-preserved figurative cave paintings in the world, [1] as well as other evidence of Upper Paleolithic life. [2]
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