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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 ...
Bulbs used for headlamps, turn signals and brake lamps may be required to comply with international and national regulations governing the types of lamps used. Other automotive lighting applications such as auxiliary lamps or interior lighting may not be regulated, but common types are used by many automotive manufacturers.
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. The regulations are generally based on efficiency, rather than use of incandescent technology. However, it is not unlawful to continue to buy or sell existing ...
July 31, 2024 at 6:00 AM. Robert F. Kennedy Jr.’s campaign looks like it is in trouble with Vice President Harris as the likely Democratic nominee. Kennedy is scrambling to keep the public’s ...
Former President Alberto Fujimori, who was pardoned in December from his convictions for corruption and responsibility for the murder of 25 people, plans to run for Peru's presidency for the ...
Ink cartridge. Two cartridges (one with black ink (a third-party type HP 15-compatible cartridge), one with colored inks (an original type HP 17 tri-color cartridge)) installed in an HP inkjet printer. An ink cartridge or inkjet cartridge is the component of an inkjet printer that contains the ink to be deposited onto paper during printing. [ 1]
A liquid-crystal display ( LCD) is a flat-panel display or other electronically modulated optical device that uses the light-modulating properties of liquid crystals combined with polarizers. Liquid crystals do not emit light directly [ 1] but instead use a backlight or reflector to produce images in color or monochrome.
Iron gall ink (also known as common ink, standard ink, oak gall ink or iron gall nut ink) is a purple-black or brown-black ink made from iron salts and tannic acids from vegetable sources. It was the standard ink formulation used in Europe for the 1400-year period between the 5th and 19th centuries, remained in widespread use well into the 20th ...