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Compact fluorescent mogul-base bulbs are also available, as are adaptors to allow medium-base bulbs to be used in mogul sockets. There are usually two three-way switches near the top of the floor lamp to operate the bulbs. One controls the three-way center bulb, and the other turns on one, two, or all three (or four) of the peripheral bulbs.
Postural Control and Stability for Seniors. Illuminating Engineering Society of North America. Recommended practice for lighting and the visual environment for senior living, IESNA, New York, 1998, RP-28-98; Figueiro M. Lighting the Way: a key to independence. Guidelines for Designing Lighting for Older Adults. 2001. Retrieved 13 August 2007
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.
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[72] [73] The biggest chandelier in the Sheikh Zayed Grand Mosque in Abu Dhabi, with a diameter of 10 m, height of 15.5 m, weight of nearly 12 tonnes and lit with 15,500 LED lights, became the world's largest chandelier when it was installed in 2007. [74] In 2010, a chandelier of modern design was built in the foyer of an office building in ...
The bulb was officially listed in the Guinness Book of World Records as "the most durable light" in 1972, replacing the Palace Theater Light in Fort Worth, Texas. The bulb was listed in the book for the next 16 editions. It was not listed during 1988–2006, without a reason being given, before returning in 2007. [16]
In areas following the U.S. National Electrical Code, general-use lamps over 300 W cannot use an E26 base and must instead use the E39 base. Medium Edison screw (MES) bulbs for 12 V are also produced for recreational vehicles. Large outdoor Christmas lights use Intermediate base, as do some desk lamps and many microwave ovens.
Miniature lamps may have a wedge base made of glass or plastic. The base may be an extension of the glass envelope of the bulb, with the wire leads of the lamp folded up at the base. Some wedge bases are made of plastic and slipped over the wire leads. A wedge base holds the lamp by spring compression in the socket.