Part 6742

<hw>Mag*ne"sic</hw> <tt>(?)</tt>, <tt>a.</tt> <fld>(Chem.)</fld> <def>Pertaining to, or containing, magnesium; <as>as, <ex>magnesic</ex> oxide</as>.</def>

<h1>Magnesite</h1> <Xpage=882>

<hw>Mag"ne*site</hw> <tt>(?)</tt>, <tt>n.</tt> <ety>[Cf. F. <ets>magn\'82site</ets>.]</ety> <fld>(Min.)</fld> <def>Native magnesium carbonate occurring in white compact or granular masses, and also in rhombohedral crystals.</def>

<h1>Magnesium</h1> <Xpage=882>

<hw>Mag*ne"si*um</hw> <tt>(?)</tt>, <tt>n.</tt> <ety>[NL. & F. See <er>Magnesia</er>.]</ety> <fld>(Chem.)</fld> <def>A light silver-white metallic element, malleable and ductile, quite permanent in dry air but tarnishing in moist air. It burns, forming (the oxide) magnesia, with the production of a blinding light (the so-called <i>magnesium light</i>) which is used in signaling, in pyrotechny, or in photography where a strong actinic illuminant is required. Its compounds occur abundantly, as in dolomite, talc, meerschaum, etc. Symbol Mg. Atomic weight, 24.4. Specific gravity, 1.75.</def>

<cs><col>Magnesium sulphate</col>. <fld>(Chem.)</fld> <cd>Same as <er>Epsom salts</er>.</cd></cs>

<h1>Magnet</h1> <Xpage=882>

<hw>Mag"net</hw> <tt>(?)</tt>, <tt>n.</tt> <ety>[OE. <ets>magnete</ets>, OF. <ets>magnete</ets>, L. <ets>magnes</ets>, <ets>-etis</ets>, Gr. <?/ <?/ a magnet, metal that looked like silver, prop., Magnesian stone, fr. Gr. <?/, a country in Thessaly. Cf. <er>Magnesia</er>, <er>Manganese</er>.]</ety> <p><b>1.</b> <def>The loadstone; a species of iron ore (the ferrosoferric or magnetic ore, <chform>Fe3O4</chform>) which has the property of attracting iron and some of its ores, and, when freely suspended, of pointing to the poles; -- called also <altname>natural magnet</altname>.</def>

<blockquote>Dinocrates began to make the arched roof of the temple of Arsino\'89 all of <b>magnet</b>, or this loadstone. <i>Holland.</i></blockquote>

<blockquote>Two <b>magnets</b>, heaven and earth, allure to bliss, The larger loadstone that, the nearer this. <i>Dryden.</i></blockquote>

<p><b>2.</b> <fld>(Physics)</fld> <def>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 <altname>artificial magnet</altname>.</def>

<note>&hand; An artificial magnet, produced by the action of a voltaic or electrical battery, is called an <stype>electro-magnet</stype>.</note>

<cs><col>Field magnet</col> <fld>(Physics & Elec.)</fld>, <cd>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.</cd></cs>

<h1>Magnetic, Magnetical</h1> <Xpage=882>

<hw><hw>Mag*net"ic</hw> <tt>(?)</tt>, <hw>Mag*net"ic*al</hw> <tt>(?)</tt>,<hw> <tt>a.</tt> <ety>[L. <ets>magneticus</ets>: cf. F. <ets>magn\'82tique</ets>.]</ety> <p><b>1.</b> <def>Pertaining to the magnet; possessing the properties of the magnet, or corresponding properties; <as>as, a <ex>magnetic</ex> bar of iron; a <ex>magnetic</ex> needle.</as></def>

<p><b>2.</b> <def>Of or pertaining to, or characterized by,, the earth's magnetism; <as>as, the <ex>magnetic</ex> north; the <ex>magnetic</ex> meridian.</as></def>

<p><b>3.</b> <def>Capable of becoming a magnet; susceptible to magnetism; <as>as, the <ex>magnetic</ex> metals</as>.</def>

<p><b>4.</b> <def>Endowed with extraordinary personal power to excite the feelings and to win the affections; attractive; inducing attachment.</def>

<blockquote>She that had all <b>magnetic</b> force alone. <i>Donne.</i></blockquote>

<p><b>5.</b> <def>Having, susceptible to, or induced by, animal magnetism, so called; <as>as, a <ex>magnetic</ex> sleep</as>. See <er>Magnetism</er>.</def>

<cs><mcol><col>Magnetic amplitude</col>, <col>attraction</col>, <col>dip</col>, <col>induction</col></mcol>, <cd>etc. See under <er>Amplitude</er>, <er>Attraction</er>, etc.</cd> -- <col>Magnetic battery</col>, <cd>a combination of bar or horseshoe magnets with the like poles adjacent, so as to act together with great power.</cd> -- <col>Magnetic compensator</col>, <cd>a contrivance connected with a ship's compass for compensating or neutralizing the effect of the iron of the ship upon the needle.</cd> -- <col>Magnetic curves</col>, <cd>curves indicating lines of magnetic force, as in the arrangement of iron filings between the poles of a powerful magnet.</cd> -- <col>Magnetic elements</col>. <sd>(a)</sd> <fld>(Chem. Physics)</fld> <cd>Those elements, as iron, nickel, cobalt, chromium, manganese, etc., which are capable or becoming magnetic.</cd> <sd>(b)</sd> <fld>(Physics)</fld> <cd>In respect to terrestrial magnetism, the declination, inclination, and intensity</cd>. <sd>(c)</sd> <cd>See under <er>Element</er>.</cd> -- <col>Magnetic equator</col>, <cd>the line around the equatorial parts of the earth at which there is no dip, the dipping needle being horizontal.</cd> -- <mcol><col>Magnetic field</col>, &or; <col>Field of magnetic force</col></mcol>, <cd>any space through which magnet exerts its influence.</cd> -- <col>Magnetic fluid</col>, <cd>the hypothetical fluid whose existence was formerly assumed in the explanations of the phenomena of magnetism.</cd> -- <mcol><col>Magnetic iron</col>, &or; <col>Magnetic iron ore</col></mcol>. <fld>(Min.)</fld> <cd>Same as <er>Magnetite</er>.</cd> -- <col>Magnetic needle</col>, <cd>a slender bar of steel, magnetized and suspended at its center on a sharp-pointed pivot, or by a delicate fiber, so that it may take freely the direction of the magnetic meridian. It constitutes the essential part of a compass, such as the mariner's and the surveyor's.</cd> -- <col>Magnetic poles</col>, <cd>the two points in the opposite polar regions of the earth at which the direction of the dipping needle is vertical.</cd> -- <col>Magnetic pyrites</col>. <cd>See <er>Pyrrhotite</er>.</cd> -- <col>Magnetic storm</col> <fld>(Terrestrial Physics)</fld>, <cd>a disturbance of the earth's magnetic force characterized by great and sudden changes.</cd> -- <col>Magnetic telegraph</col>, <cd>a telegraph acting by means of a magnet. See <er>Telegraph</er>.</cd></cs>

<h1>Magnetic</h1> <Xpage=882>

<hw>Mag*net"ic</hw> <tt>(?)</tt>, <tt>n.</tt> <p><b>1.</b> <def>A magnet.</def> <mark>[Obs.]</mark>

<blockquote>As the <b>magnetic</b> hardest iron draws. <i>Milton.</i></blockquote>

<p><b>2.</b> <def>Any metal, as iron, nickel, cobalt, etc., which may receive, by any means, the properties of the loadstone, and which then, when suspended, fixes itself in the direction of a magnetic meridian.</def>

<h1>Magnetically</h1> <Xpage=882>

<hw>Mag*net"ic*al*ly</hw>, <tt>adv.</tt> <def>By or as by, magnetism.</def>

<h1>Magneticalness</h1> <Xpage=882>