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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 .
The light from an incandescent source is similar in character to that from a Planckian "black body" in spectral distribution, that is, the bulb, as the filament heats up, produces light at wavelengths throughout the visible spectrum.
Incandescent street light in Ewing, New Jersey (2014) During the first two decades of the 20th century, there was intense competition among providers of various forms of street lighting, including carbon arc lamps; incandescent lamps; traditional coal gas lamps; and gasoline and naphtha street lamps. [3]
Incandescent lights are best used for lighting in living rooms, dining rooms, and bedrooms, where soft, ambient light is most desired. They are also recommended for appliances and heat lamps, due ...
Bubble lights are a type of incandescent novelty light that acquired some popularity during the 1950s. [citation needed] Their main feature is a sealed glass tube with a colored bubbling liquid inside, created by the heat from the incandescent light. The fluid within the vial was originally a lightweight oil, but now is methylene chloride for a ...
Because of this lengthy recycling process, the bulb's life-span is far longer than its incandescent cousin. But while halogens can last three times longer than incandescent bulbs, they are far ...
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