The Incandescent lamp also known as electric lamp or Filament lamp, but better known as the Electric BULB is a source of electric light that works by incandescence. An electric current passes through a thin filament, heating it to white hot until it produces light. The enclosing glass bulb prevents the oxygen in air from reaching the hot filament, which otherwise would be destroyed rapidly by oxidation. Incandescent light bulbs come in a range of shapes and sizes. The names of the shapes may be slightly different in some regions.
As a result the incandescent lamps are widely used in household and commercial lighting, for portable lighting, such as table lamps, some car headlamps and electric flashlights, and for decorative and advertising lighting.
As a result, Incandescent light bulbs are gradually being replaced in many applications by CFL- Compact Fluorescent lamps, high-intensity discharge lamps, light-emitting diodes (LEDs), and other devices, which give more visible light for the same amount of electrical energy input. Some jurisdictions are even attempting to ban the use of incandescent light bulb in favour of more energy-efficient lighting.
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