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Hasil cari dari kata atau frase: Davy lamp (0.00827 detik)
Found 2 items, similar to Davy lamp.
English → English (WordNet) Definition: Davy lamp Davy lamp n : an oil lamp that will not ignite flammable gases (methane) [syn: safety lamp]
English → English (gcide) Definition: Davy 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] Davy lamp \Da"vy lamp`\ See Safety lamp, under Lamp. [1913 Webster]


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