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Magnesium   Listen
noun
Magnesium  n.  (Chem.) A light silver-white metallic element of atomic number 12, 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 magnesium light) 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, 24.305. Specific gravity, 1.75.
Magnesium sulphate. (Chem.) Same as Epsom salts.






Collaborative International Dictionary of English 0.48








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"Magnesium" Quotes from Famous Books



... and possibly of the hops. The excellent quality of the Burton ales was long ago surmised to be due mainly to the well water obtainable in that town. On analysing Burton water it was found to contain a considerable quantity of calcium sulphate—gypsum—and of other calcium and magnesium salts, and it is now a well-known fact that good bitter ales cannot be brewed except with waters containing these substances in sufficient quantities. Similarly, good mild ale waters should contain a certain quantity of sodium chloride, and waters for stout very little mineral matter, ...
— Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 - "Brescia" to "Bulgaria" • Various

... below the corona is called the chromosphere. Hydrogen is the principal material of its upper part; iron, magnesium, and other [Page 89] metals, some of them as yet unknown on earth, but having a record in the spectrum, in the denser parts below. If these fierce fires are a part of the Sun, as they assuredly are, its diameter would be ...
— Recreations in Astronomy - With Directions for Practical Experiments and Telescopic Work • Henry Warren

... the sudden flash of the photographer's magnesium light, plainly felt by him through his closed lids, that somehow instantly inspired Edward Henry to a definite and ruthless line of action. He opened his eyes and beheld the triumphant group, and the photographer himself, victorious ...
— The Regent • E. Arnold Bennett

... iron ore, coal, manganese, natural gas, oil, salt, sulfur, graphite, titanium, magnesium, kaolin, nickel, mercury, ...
— The 2000 CIA World Factbook • United States. Central Intelligence Agency.

... complex compounds. The following elements appear to be essential to all living bodies: carbon, hydrogen, oxygen, nitrogen, sulphur, potassium. Besides these there are several others usually present, but not apparently essential to all organisms. These include phosphorus, iron, calcium, sodium, magnesium, ...
— Elements of Structural and Systematic Botany - For High Schools and Elementary College Courses • Douglas Houghton Campbell

... become ill had they been properly nourished. Sick fasters may be wise to take in minerals from thin vegetable broths or vitamin-like supplements in order to prevent uncomfortable deficiency states. For example calcium or magnesium deficiencies can make water fasters experience unpleasant symptoms such as hand tremors, stiff muscles, cramps in the hands, feet, and legs, and difficulty relaxing. I want to stress here that fasting itself does not create deficiencies. But a person already deficient in ...
— How and When to Be Your Own Doctor • Dr. Isabelle A. Moser with Steve Solomon

... magnesium ribbon, and a diffuser of opal is then necessary, and the ribbon must be kept in motion the whole of the time. Magnesium is objectionable because the particles of magnesia form a voluminous cloud, which tastes and ...
— Scientific American Supplement, No. 1082, September 26, 1896 • Various

... hand into his pocket and brought out a roll of magnesium wire, gave Wriggs his gun to hold, and then lit one end which flashed out into a brilliant whitish light, surrounded by dense fumes of smoke, and illuminating the vast hall in which they stood, for here the tiny river ran in a wide-spreading plain of smooth lava which must at one time have ...
— Fire Island - Being the Adventures of Uncertain Naturalists in an Unknown Track • G. Manville Fenn

... array of bathing appliances going yields three hogsheads per minute, and issues from the earth at a temperature of 117 deg. Fahr. The chief constituents of the waters are calcium sulphate, sodium sulphate, magnesium chloride, calcium carbonate, and sodium chloride, and there ...
— Somerset • G.W. Wade and J.H. Wade

... very few representatives among the bright stars, and which has been thus described: "Spectra in which the hydrogen lines and the few metallic lines all appear to be of equal breadth and sharp definition." Rigel shows a line which some believe to represent magnesium; but while it has iron lines in its spectrum, it exhibits no evidence of the existence of any such cloud of volatilized iron as that which helps to envelop ...
— Pleasures of the telescope • Garrett Serviss

... off a list of elements so swiftly I'm sure no one but the stenographer caught them all. I know I didnt get more than half, though I was sitting less than five feet from her. "Magnesium," she stated, "iodine, carbon, nitrogen, hydrogen, helium, ...
— Greener Than You Think • Ward Moore

... 4 parts; zinc chloride, 5 parts; aluminum chloride, 4 parts; calcium chloride, 5 parts; magnesium chloride, 3 parts; and water sufficient to make 90 parts. When all is dissolved add to each gallon 10 grains of thymol and a quarter-ounce of rosemary that had been previously dissolved in six quarts ...
— Practical Mechanics for Boys • J. S. Zerbe

... be discovered, and seismic theories either confirmed or disproved. A volcano always throws off a great variety of materials, hydrochloric and sulphuric acids, iron, silica (sand), sulphur, calcium and magnesium. The lava is of two kinds. That which is easily fusible flows more rapidly than a horse can trot. A more viscous kind cools into shapes like ropes. The ...
— Complete Story of the San Francisco Horror • Richard Linthicum

... shoot "flares" into the air. These flares are like rockets filled with magnesium and they show a very brilliant light, so brilliant that objects on the darkest night are brought into prominent relief a mile behind ...
— The Red Watch - With the First Canadian Division in Flanders • J. A. Currie

... Our engineers have learned how to make almost anything about one-tenth the size you'd think it ought to be, and still work. To get all these tiny parts into a total system, they are assembled in racks. In the Telstar each of these long skinny sticks of perforated magnesium alloy is hinged to the main framework so that it can be swung out for testing or for replacement of parts, which is why the engineers call each component ...
— The Trouble with Telstar • John Berryman

... little-known tree that the Bhutanese call chape, when the bright green of the young grass runs up to the white snowfields. The woods are full of a pretty ground orchid, beautiful trailing blossoms of others droop from the boughs of the great trees, and on the magnesium limestone hills one of the rarest orchids ...
— The Jungle Girl • Gordon Casserly

... one yet has gone; but, instead of taking Indian torches made of bark and resin, or even torches made of Spanish wax, such as a brave bishop of those parts used once when he went in farther than any one before him, he took with him some of that beautiful magnesium light which you have seen often here at home. And in one place, when he lighted up the magnesium, he found himself in a hall full 300 feet high—higher far, that is, than the dome of St. Paul's—and a very solemn thought it was to him, he said, that he had seen what no other human being ...
— Madam How and Lady Why - or, First Lessons in Earth Lore for Children • Charles Kingsley

... fluid, yet its sharply defined upper surface leads us to suppose that it can not well be a mere mass of vapour. The spectroscope shows us that this chromosphere contains in the state of vapour a number of metallic substances, such as iron and magnesium. To an observer who could behold this envelope of the sun from the distance at which we see the moon, the spectacle would be more magnificent than the imagination, guided by the sight of all the relatively trifling fractures of our earth, can ...
— Outlines of the Earth's History - A Popular Study in Physiography • Nathaniel Southgate Shaler

... puncture the vast silence of the desert with their cooings and gurglings and chatterings in German, English, Arabic, and every other language known since the Tower of Babel. Arab guides lit up the Sphinx with flaring magnesium, an impertinence that should have made hideous with hate the insulted features, but instead turned them for a thrilling instant of suspense into marble. Indeed, none of our petty vulgarities could jar ...
— It Happened in Egypt • C. N. Williamson & A. M. Williamson

... it was. Magnesium star-shells were continually being sent up by the Germans. They hung in the air alight for about thirty seconds, illuminating the ground like day. When they disappeared the guns flashed out; then the French replied; after that more star-shells; then the guns ...
— How I Filmed the War - A Record of the Extraordinary Experiences of the Man Who - Filmed the Great Somme Battles, etc. • Lieut. Geoffrey H. Malins

... of them, you know. There is quinine, of course, and magnesium, and—and so on. Let me fill ...
— Eliza • Barry Pain

... it would seem that the light from oil-lamps or gaslight is unable to promote growth, except in very exceptional cases, the electric light, or other strong artificial light, seems to be capable of taking the place of sunlight. Heinrich was the first to show that sunlight could be replaced by the magnesium light. ...
— Manures and the principles of manuring • Charles Morton Aikman

... all bumping up against each other in an instinctive community of emotion. The "people," luckily, predominated; the faces of workers look best in such a crowd, and there were thousands of them, each illuminated and singled out by its magnesium-flash of passion. ...
— Fighting France - From Dunkerque to Belport • Edith Wharton

... entirely cut off; and then, on removing the alum-cell, the white paper at the dark focus is instantly set on fire. Black paper is more absorbent than white for these rays; and the consequence is, that with it the suddenness and vigour of the combustion are augmented. Zinc is burnt up at the same place, magnesium bursts into vivid combustion, while a sheet of platinized platinum, placed at the focus, ...
— Six Lectures on Light - Delivered In The United States In 1872-1873 • John Tyndall

... Agnano have a temperature equal to 93 degrees. Are these pure waters produced by condensed vapours?) How can we explain the origin of the sulphuretted hydrogen? It cannot proceed from the decomposition of sulphurets of iron, or pyritic strata. Is it owing to sulphurets of calcium, of magnesium, or other earthy metalloids, contained in the interior of our planet, under its ...
— Equinoctial Regions of America V2 • Alexander von Humboldt

... its composition? We know that there are present, in a gaseous state, such well-known elements as sodium, iron, copper, zinc, and magnesium; indeed, we know that there is practically every element in the sun that we know to be in the earth. ...
— The Outline of Science, Vol. 1 (of 4) - A Plain Story Simply Told • J. Arthur Thomson

... colourless. The light emitted by stars of this class gives a continuous spectrum, the predominating element being hydrogen, having a very elevated temperature and under relatively high pressure. The vapours of iron, sodium, magnesium, and other metals, are indicated ...
— The Astronomy of Milton's 'Paradise Lost' • Thomas Orchard

... matrix of bone differs from that of cartilage or of most other tissues in consisting chiefly of inorganic salts. The chief of these is calcium phosphate, with which much smaller quantities of calcium carbonate, and magnesium phosphate and carbonate occur. These inorganic salts can be removed by immersion of the bone in weak hydrochloric acid, and a flexible network of connecting tissue, Haversian vessels, bone corpuscles, and their processes remains. This is ...
— Text Book of Biology, Part 1: Vertebrata • H. G. Wells

... with the royal and military portraits, was carried out to perfection; and each new wonder was hailed with immense enthusiasm by the assembled multitude. Innumerable Chinese lanterns glimmered throughout the garden, and from time to time red, white, and blue magnesium lights sent up a great blaze of color among the trees, now making the budding leaves blush crimson, now silvering them, as with hoar-frost, or illuminating their delicate tracery with an intense blue which shone out ...
— Ilka on the Hill-Top and Other Stories • Hjalmar Hjorth Boyesen

... diameter rests on the bottom. A large tube, with an aperture in its bottom, is supported in the centre and is charged with copper sulphate crystals. The cup is filled with a dilute solution of Epsom salts (magnesium sulphate) or with ...
— The Standard Electrical Dictionary - A Popular Dictionary of Words and Terms Used in the Practice - of Electrical Engineering • T. O'Conor Slone

... appears to have been recently elevated above the waters of the sea. In both countries the salt-lakes occupy shallow depressions in the plains; in both the mud on the borders is black and fetid; beneath the crust of common salt, sulphate of soda or of magnesium occurs, imperfectly crystallized; and in both, the muddy sand is mixed with lentils of gypsum. The Siberian salt-lakes are inhabited by small crustaceous animals; and flamingoes (Edin. New Philos. Jour., Jan 1830) likewise frequent ...
— The Voyage of the Beagle • Charles Darwin

... worms, and the combating of complications. For the expulsion of the worms the use of carbon bisulphid in gelatin capsules, 2 to 5 grams, according to the size of the patient, for five days, followed by magnesium sulphate the sixth day, has been recommended. Owing to the difficulty and danger in the administration of carbon bisulphid in capsule, it is advisable to call in a veterinarian. Tonic treatment consists in the subcutaneous administration of artificial serum and caffein. The various ...
— Special Report on Diseases of the Horse • United States Department of Agriculture

... from mustard-bowls, or from "troughs of wood with stops in them," but it is, at any rate, sufficiently formidable and uproarious, sometimes exciting, indeed, the anxiety of the audience, lest it should crash through the roof of the theatre, and visit them bodily in the pit; while for our magnesium or lime-light flashes of lightning, they are beyond anything that "spirit of right Nantz brandy" could effect in the way of lambent flames, have a vividness that equals reality, and, moreover, leave behind them a pungent and sulphurous ...
— A Book of the Play - Studies and Illustrations of Histrionic Story, Life, and Character • Dutton Cook

... (2,000 or more) Magnesium (20 or more) Iron Molybdenum Nickel Sodium (11) Hydrogen Lanthanum Titanium Silicon Sodium Niobium Manganese Strontium Nickel Palladium Chromium Barium Magnesium Neodymium Cobalt Aluminum (4) Cobalt Copper Carbon ...
— Scientific American Supplement, No. 799, April 25, 1891 • Various

... Eisenbuettel, near Braunschweig, distributes the following circular: "The principal generators of incrustation in boilers are gypsum and the so-called bicarbonates of calcium and magnesium. If these can be taken put of the water, before it enters the boiler, the formation of incrustation is made impossible; all disturbances and troubles, derived from these incrustations, are done away with, and besides this, a considerable saving of fuel is ...
— Scientific American Supplement, No. 286 - June 25, 1881 • Various

... have metal runners in high temperatures in which they will run better than wood. In cold temperatures wood is necessary. Metal is stronger than wood with same weight. He has never used, but he suggests the possible use of, aluminium or magnesium for the metal. And he would also have wooden runners with metal runners attached, to be used alternately, ...
— The Worst Journey in the World, Volumes 1 and 2 - Antarctic 1910-1913 • Apsley Cherry-Garrard

... natural food of ordinary crops are ten in number, viz.—carbon, hydrogen, oxygen, nitrogen, sulphur, phosphorus, potassium, calcium, magnesium, and iron. These are obtained from the soil and air, and unless all of them are available plants will not grow. The absence of even one of them is as disastrous as the want of all, and a deficiency of one cannot be made up by an excess of another; for example, if the soil ...
— The Culture of Vegetables and Flowers From Seeds and Roots, 16th Edition • Sutton and Sons

... water on soap is affected very considerably by the presence of certain substances dissolved in the water, particularly salts of calcium and magnesium. Caustic soda exerts a marked retarding effect on the hydrolysis, as do also ethyl and amyl alcohols ...
— The Handbook of Soap Manufacture • W. H. Simmons



Words linked to "Magnesium" :   atomic number 12, periclase, magnesium bicarbonate, magnesium oxide, magnesite, magnesium sulfate, magnesium carbonate, carnallite, metal, magnesium nitride, bitter spar, mg, olivine, magnesium hydroxide, spinel, magnesia, metallic element, dolomite



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