light arrester

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• lightning-arrester — lightˈning arrester noun An apparatus for protecting electrical apparatus in thunderstorms • • • Main Entry: ↑lightning …   Useful english dictionary

• lightning arrester — light′ning arrest er n. elm a device for preventing damage to radio, telephonic, or other electric equipment from lightning or other high voltage currents • Etymology: 1855–60 …   From formal English to slang

• Lightning arrester — Lightning Light ning (l[imac]t n[i^]ng), n. [For lightening, fr. lighten to flash.] 1. A discharge of atmospheric electricity, accompanied by a vivid flash of light, commonly from one cloud to another, sometimes from a cloud to the earth. The… …   The Collaborative International Dictionary of English

• Spark arrester — Spark Spark, n. [OE. sparke, AS. spearca; akin to D. spark, sperk; cf. Icel. spraka to crackle, Lith. sprag[ e]ti, Gr. ? a bursting with a noise, Skr. sph?rj to crackle, to thunder. Cf. {Speak}.] 1. A small particle of fire or ignited substance… …   The Collaborative International Dictionary of English

• Ferroresonance — The phenomenon of Ferroresonance is the occurrence of an unstable high voltage, typically on 3 phase electrical systems which only occurs under specific conditions. The nature of the overvoltage can cause the failure of equipment.Ferroresonance… …   Wikipedia

• History of electromagnetism — The history of electromagnetism, that is the human understanding and recorded use of electromagnetic forces, dates back over two thousand years ago, see Timeline of electromagnetism. The ancients must have been acquainted with the effects of… …   Wikipedia

• Silicon carbide — Chembox new Name = Silicon carbide ImageFile = Silicon carbide 3D balls.png ImageSize = 140px ImageName = Ball and stick model of part of a crystal of SiC ImageFile1 = silicon carbide detail.jpg ImageSize1 = 140px OtherNames = Section1 = Chembox… …   Wikipedia

• List of Edison patents — Below is a list of Edison patents. Thomas Edison was an inventor who, it is said, accumulated 1500 plus patents worldwide for his inventions. Nearly 1100 of Edison s patents were in the United States, but other patents were approved in countries… …   Wikipedia

• aerospace industry — Introduction       assemblage of manufacturing concerns that deal with vehicular flight within and beyond the Earth s atmosphere. (The term aerospace is derived from the words aeronautics and spaceflight.) The aerospace industry is engaged in the …   Universalium

• Aeroplane Monthly — Aeroplane Aeroplane Monthly Pays  Royaume Uni Langue Anglais Périodicité Mensuel …   Wikipédia en Français

• de Havilland Mosquito — DH.98 Mosquito The Mosquito B Mk XVI ML963 of 571 Squadron this aircraft was lost on an operation to Berlin in April 1945 …   Wikipedia