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Incandescent light bulb Definition

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Incandescent light bulb - Description :
The incandescent light bulb (archaically known as the electric lamp) uses a glowing wire filament heated to white-hot by electrical resistance, to generate light (a process known as thermal radiation or incandescence). The bulb is the glass enclosure which keeps the filament in a vacuum or low-pressure noble gas, or a halogen gas in the case of quartz-halogen lamps (see below) in order to prevent oxidisation of the filament at high temperatures. In Australia and South Africa a light bulb is also called a light globe.

Because of its poor efficiency and yellowish color, it is being gradually replaced in many applications by fluorescent lights, high-intensity discharge lamps, LEDs, and other devices.
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