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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 ]
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 ...
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]
Cave of Forgotten Dreams is a 2010 3D documentary film by Werner Herzog about the Chauvet Cave in Southern France, which contains some of the oldest human-painted images yet discovered—some of them were crafted around 32,000 years ago.
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