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more about electromagnet
electromagnet |
3 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Magnet \Mag"net\, n. [OE. magnete, OF magnete, L. magnes, -etis, Gr ? ? a magnet, metal that looked like silver, prop., Magnesian stone, fr Gr ?, a country in Thessaly. Cf {Magnesia}, {Manganese}.] 1. The loadstone; a species of iron ore (the ferrosoferric or magnetic ore, {Fe3O4}) which has the property of attracting iron and some of its ores, and when freely suspended, of pointing to the poles; -- called also {natural magnet}. Dinocrates began to make the arched roof of the temple of Arsino["e] all of magnet, or this loadstone. --Holland. Two magnets, heaven and earth, allure to bliss, The larger loadstone that the nearer this --Dryden. 2. (Physics) A bar or mass of steel or iron to which the peculiar properties of the loadstone have been imparted; -- called in distinction from the loadstone, an {artificial magnet}. Note: An artificial magnet, produced by the action of a voltaic or electrical battery, is called an {electro-magnet}. {Field magnet} (Physics & Elec.), a magnet used for producing and maintaining a magnetic field; -- used especially of the stationary or exciting magnet of a dynamo or electromotor in distinction from that of the moving portion or armature. From Webster's Revised Unabridged Dictionary (1913) [web1913]: Electro-magnet \E*lec`tro-mag"net\, n. A mass, usually of soft iron, but sometimes of some other magnetic metal, as nickel or cobalt, rendered temporarily magnetic by being placed within a coil of wire through which a current of electricity is passing. The metal is generally in the form of a bar, either straight, or bent into the shape of a horseshoe. From WordNet r 1.6 [wn]: electromagnet n : a temporary magnet made by coiling wire around an iron core; when current flows in the coil the iron becomes a magnet
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