in candescent lamp

incandescent lamp

noun
a lamp that emits light due to the glowing of a heated material, especially the common device in which a tungsten filament enclosed within an evacuated glass bulb is rendered luminous by the passage of an electric current through it.


Origin:
1880–85

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World English Dictionary
incandescent lamp
 
n
a source of light that contains a heated solid, such as an electrically heated filament

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
incandescent lamp   (ĭn'kən-děs'ənt)  Pronunciation Key 


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A lamp that produces light by heating up a filament of wire inside a bulb with an electric current, causing incandescence. The glass bulb containing the filament is filled with a nonreactive gas, such as argon, to prevent the wire from burning. Compare fluorescent lamp.
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