| Edridge-Green lamp | A lantern used to test recognition of coloured signals; it displays a single light with colour filters in rotating disks that can be modified to simulate conditions of weather and atmosphere. This test for colour blindness was officially adopted in Great Britain in 1915 in place of the Holmgren wool test, but is now seldom used. (05 Mar 2000) |
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| tungsten arc lamp | <apparatus> A lamp having highly compressed tungsten elements. (05 Mar 2000) |
| ultraviolet lamp | A lamp that emits rays in the ultraviolet band of the spectrum. See: ultraviolet. (05 Mar 2000) |
| Kromayer's lamp | A U-shaped quartz lamp of mercury vapor, giving out actinic rays; used in the treatment of skin diseases. (05 Mar 2000) |
| uviol lamp | |
| lamp | 1. A light-producing vessel, instrument or apparatus; especially, a vessel with a wick used for the combustion of oil or other inflammable liquid, for the purpose of producing artificial light. 2. Figuratively, anything which enlightens intellectually or morally; anything regarded metaphorically a performing the uses of a lamp. "Thy word is a lamp unto my feet, and a light unto my path." (Ps. Cxix. 105) "Ages elapsed ere Homer's lamp appeared." (Cowper) 3. <physics> A device or mechanism for producing light by electricity. See Incandescent lamp, under Incandescent. Aeolipile 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. Arc lamp, 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 labour, as a literary composition. Origin: F. Lampe, L. Lampas, -adis, fr. Gr, torch, fr. To give light, to shine. Cf. Lampad, Lantern. Source: Websters Dictionary (01 Mar 1998) |