fluorescent lamp

fluorescent lamp
Lamp Lamp (l[a^]mp), n. [F. lampe, L. lampas, -adis, fr. Gr. ?, ?, torch, fr. ? to give light, to shine. Cf. {Lampad}, {Lantern}.] 1. A light-producing vessel, device, instrument or apparatus; formerly referring especially to a vessel with a wick used for the combustion of oil or other inflammable liquid, for the purpose of producing artificial light; also, a similar device using a gas as the combustible fuel; now referring mainly to an electric lamp. See sense [3]. [1913 Webster +PJC]

2. Figuratively, anything which enlightens intellectually or morally; anything regarded metaphorically a performing the uses of a lamp. [1913 Webster]

Thy word is a lamp unto my feet, and a light unto my path. --Ps. cxix. 105. [1913 Webster]

Ages elapsed ere Homer's lamp appeared. --Cowper. [1913 Webster]

3. (Elec.) A device or mechanism for producing light by electricity, usually having a glass bulb or tube containing the light-emitting element. Most lamps belong to one of two categories, the {Incandescent lamp} (See under {Incandescent}) or the {fluorescent lamp}. However, see also {arc lamp}, below. [1913 Webster +PJC]

4. A device that emits radiant energy in the form of heat, infrared, or ultraviolet rays; as, a heat lamp. [PJC]

{[AE]olipile lamp}, a hollow ball of copper containing alcohol which is converted into vapor by a lamp beneath, so as to make a powerful blowpipe flame when the vapor is ignited. --Weale.

{Arc lamp} (Elec.), a form of lamp in which the voltaic arc is used as the source of light.

{D["e]bereiner's lamp}, an apparatus for the instantaneous production of a flame by the spontaneous ignition of a jet of hydrogen on being led over platinum sponge; -- named after the German chemist D["o]bereiner, who invented it. Called also {philosopher's lamp}.

{Flameless lamp}, an aphlogistic lamp.

{Lamp burner}, the part of a lamp where the wick is exposed and ignited. --Knight.

{Lamp fount}, a reservoir for oil, in a lamp.

{Lamp jack}. See 2d {Jack}, n., 4 (l) & (n) .

{Lamp shade}, a screen, as of paper, glass, or tin, for softening or obstructing the light of a lamp.

{Lamp shell} (Zo["o]l.), any brachiopod shell of the genus {Terebratula} and allied genera. The name refers to the shape, which is like that of an antique lamp. See {Terebratula}.

{Safety lamp}, a miner's lamp in which the flame is surrounded by fine wire gauze, preventing the kindling of dangerous explosive gases; -- called also, from Sir Humphry Davy the inventor, {Davy lamp}.

{To smell of the lamp}, to bear marks of great study and labor, as a literary composition. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • fluorescent lamp — ☆ fluorescent lamp or fluorescent tube n. a glass tube coated on the inside with a fluorescent substance that gives off a bright light (fluorescent light) when a vapor, usually mercury vapor, in the tube is acted upon by a stream of electrons… …   English World dictionary

  • Fluorescent lamp — A fluorescent lamp or fluorescent tube is a gas discharge lamp that uses electricity to excite mercury vapor. The excited mercury atoms produce short wave ultraviolet light that then causes a phosphor to fluoresce, producing visible light.Unlike… …   Wikipedia

  • fluorescent lamp — noun lamp consisting of a tube coated on the inside with a fluorescent material; mercury vapor in the tube emits ultraviolet radiation that is converted to visible radiation by the fluorescent material • Hypernyms: ↑lamp * * * noun : a tubular… …   Useful english dictionary

  • Fluorescent lamp —   A glass enclosure in which light is produced when electricity is passed through mercury vapor inside the enclosure. The electricity creates a radiation discharge that strikes a coating on the inside surface of the enclosure, causing the coating …   Energy terms

  • fluorescent lamp — a tubular electric discharge lamp in which light is produced by the fluorescence of phosphors coating the inside of the tube. [1895 1900] * * * Type of electric discharge lamp consisting of a glass tube filled with a mixture of argon and mercury… …   Universalium

  • fluorescent lamp — liuminescencinė lempa statusas T sritis chemija apibrėžtis Lempa, kurioje šviečia dujinio išlydžio sužadintas liuminoforas. atitikmenys: angl. fluorescent lamp; luminescence lamp; luminescent lamp rus. люминесцентная лампа …   Chemijos terminų aiškinamasis žodynas

  • fluorescent lamp — fluorescencinė lempa statusas T sritis fizika atitikmenys: angl. fluorescent lamp vok. Fluoreszenzlampe, f rus. флуоресцентная лампа, f pranc. lampe à fluorescence, f; lampe fluorescente, f …   Fizikos terminų žodynas

  • fluorescent lamp — noun Date: 1896 a usually tubular electric lamp having a coating of fluorescent material on its inner surface and containing mercury vapor whose bombardment by electrons from the cathode provides ultraviolet light which causes the material to… …   New Collegiate Dictionary

  • fluorescent lamp — fluores′cent lamp′ n. elm a tubular electric discharge lamp in which light is produced by the fluorescence of phosphors coating the inside of the tube • Etymology: 1895–1900 …   From formal English to slang

  • fluorescent lamp — glass tube coated on the inside with a fluorescent substance that gives off light …   English contemporary dictionary

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