fluorescent lamp
Americannoun
noun
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a type of lamp in which an electrical gas discharge is maintained in a tube with a thin layer of phosphor on its inside surface. The gas, which is often mercury vapour, emits ultraviolet radiation causing the phosphor to fluoresce
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a type of lamp in which an electrical discharge is maintained in a tube containing a gas such as neon, mercury vapour, or sodium vapour at low pressure. Gas atoms in the discharge are struck by electrons and fluoresce
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An electric lamp that produces light through fluorescence. In most fluorescent lamps, a mixture of argon and mercury gas contained in a glass bulb is stimulated by an electric current, producing ultraviolet rays. These rays strike a fluorescent phosphor coating on the interior surface of the bulb, causing it to emit visible light. Fluorescent lamps are much more efficient than incandescent lamps because very little energy is lost as heat.
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Compare incandescent lamp
Etymology
Origin of fluorescent lamp
First recorded in 1895–1900
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
When he has a spare moment, he moves to the back of his cluttered shop and turns on the fluorescent lamp hanging above a small table.
From Washington Times
"If your home lacks natural light, you can try placing your plant directly under a fluorescent lamp or plant grow light during the day."
From Fox News
Yet I imagined Ade Coker and the rest of the staff in an office beneath the ground, a fluorescent lamp flooding the dark damp room, the men bent over their desks, writing the truth.
From Literature
She has facilitated the construction of a new tin shed for the horse, which has been fitted out with two water-cooled fans, a mosquito net and fluorescent lamp.
From BBC
On the second night, a fluorescent lamp was placed a few feet from the sleeping subject.
From Reuters
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
