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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 .
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.
Red PWY24W WP3.3×14.5-4 1 12 V: 24 W Amber, ANSI № 7450 P27W W2.5×16d 1 12 V: 27 W ANSI № 3156 P27/7W W2.5×16q 2 12 V: 27 / 7 W ANSI № 3157 PR27/7W WU2.5x16 2 12 V: 27 / 7 W Red PY27/7W WX2.5x16q 2 12 V: 27 / 7 W Amber ANSI № 3757A R5W BA15s 1 6 V, 12 V, 24 V: 5 W Old designation: R19/5 RR5W BAW15s 1 12 V & 24 V: 5 W Red R10W BA15s 1
The current price of CFLs reflects the manufacturing of nearly all CFLs in China, where labour costs less. In September 2010, the Winchester, Virginia, General Electric plant closed, [49] leaving Osram Sylvania and the tiny American Light Bulb Manufacturing Inc. the last companies to make standard incandescent bulbs in the United States. [50]
Incandescent light bulbs use a tungsten filament heated to high temperature to produce visible light and, necessarily, even more infrared radiation. Round bulbs, often tinted red to reduce visible light, provide infrared radiant heat suitable for warming of people or animals, but the power density available is low.
Pages in category "Incandescent light bulbs" The following 18 pages are in this category, out of 18 total. This list may not reflect recent changes. ...
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