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An incandescent light bulb, incandescent lamp or incandescent light globe is an electric light with a filament that is heated until it glows. The filament is enclosed in a glass bulb that is either evacuated or filled with inert gas to protect the filament from oxidation. Electric current is supplied to the filament by terminals or wires ...
60 W incandescent light bulb with energy efficiency class E Equivalent 42 W halogen incandescent light bulb with efficiency class C Compact fluorescent lamp LED lamp. Various governments have passed legislation to phase out manufacturing or importation of incandescent light bulbs for general lighting in favor of more energy-efficient alternatives.
c. 1885 Incandescent gas mantle invented, revolutionises gas lighting. 1886 Great Barrington, Massachusetts demonstration project, a much more versatile (long-distance transmission) transformer based alternating current based indoor incandescent lighting system introduced by William Stanley, Jr. working for George Westinghouse. [6]
The third longest lasting light bulb began operation in 1929-30 when BC Electric's Ruskin Generating Station (British Columbia Canada) commenced service. The bulb has been on ever since, and may in fact have the longest continuous service in the world with other bulbs having interruptions in operation during their existence.
Sold as "specialty lighting", Edison-style incandescent lamps are exempted from the ban in most places. [ citation needed ] More contemporary "Edison light bulbs" are designed to replicate the same light color and bulb shape of the original, but offer a more energy-efficient version to Rosenzweig's popular vintage reproduction bulbs (modern ...
Practical incandescent bulbs, which trace their origin to an 1880 Edison patent, can't meet those standards. Neither can halogen bulbs. The rules also ban imports of less efficient bulbs.
Sir Joseph Wilson Swan FRS (31 October 1828 – 27 May 1914) was an English physicist, chemist, and inventor.He is known as an independent early developer of a successful incandescent light bulb, and is the person responsible for developing and supplying the first incandescent lights used to illuminate homes and public buildings, including the Savoy Theatre, London, in 1881.
America’s ban on incandescent light bulbs, 16 years in the making, is finally a reality. Well, mostly. A rule issued in 2007, rolled back by the Trump administration, and updated last year by ...