"Magnetic needle" Quotes from Famous Books
 ... damage was done, but those having offices in tall buildings had an unpleasant experience which they will not soon forget. A peculiar phenomenon accompanying this seismic disturbance was the variation of the magnetic needle by over eighty degrees from north to east and an extraordinary rise and fall of the barometer. All wireless communication had to be abandoned, owing to the ionizing of the atmosphere, and up to the time this edition went ...
— The Man Who Rocked the Earth • Arthur Train
... show their direction. To finish the definition of the field, it remains to determine the direction of these lines of force. Such direction is, by definition, and conventionally, that in which the north pole of a small magnetic needle, free to move in the field, would travel. It results from this definition that the lines of force issue from the north pole of a magnet and re-enter the south pole, since the north pole of a magnet repels the north pole of a needle, ...
— Scientific American Supplement, Vol. XIX, No. 470, Jan. 3, 1885 • Various
... transmitted by shafting or belting from one part of a factory to another. An electric current meter may be made by giving inclination to the disk, which is for this purpose made exceedingly small and delicate, by means of a heavy magnetic needle deflected by the current. This, like Edison's, is a direction meter; but a meter in which no regard is paid to the direction of the current can be made by help of an iron armature of such a shape that the force with which it is attracted ...
— Scientific American Supplement, No. 315, January 14, 1882 • Various
... profitably interpreted by contraries, a process of which the great Tycho Brahe is said to have availed himself in the case of the little Lackwit, who used to sit and mutter at his feet while he was studying. A mind of this sort we may compare to a magnetic needle, the poles of which have been suddenly reversed by a flash of lightning, or other more obscure accident of nature. It may be safely concluded, that to those whose judgment or information he respected, Sir Alexander Ball did not content himself with giving access and attention. ...
— Confessions of an Inquiring Spirit etc. • by Samuel Taylor Coleridge
... his experiments several days successively until he became familiar with the operation of the machinery, and the movements of the boat. He found that she was as obedient to her helm under water, as any boat could be on the surface, and that the magnetic needle traversed as well in the one as in ...
— Hidden Treasures - Why Some Succeed While Others Fail • Harry A. Lewis
... inferred? It would be at bottom not a case of logical inference at all, but of empirical association. You may reply that many of the inferences of science are of this character; the inference, for example, that an electric current of a given direction will deflect a magnetic needle in a definite way; but the cases differ in this, that the passage from the current to the needle, if not demonstrable, is thinkable, and that we entertain no doubt as to the final mechanical solution of the problem. But the passage from the physics of the brain to the ...
— The Unseen World and Other Essays • John Fiske
... search for truth, for his conscience is not infallible, and by so doing he will bring it to accord with the real facts of God. "Throw away," says Savage, "prejudice and conceit, seek to make your conscience like the magnetic needle. The needle ever and naturally seeking the unchanging pole." As conscience, then, is but a faculty capable of development, it is not so difficult to understand a race of people whose conscience was in just the first stages of development; and, finally, a race which did ...
— Was Man Created? • Henry A. Mott
... ball; and Dr. Gilbert showed that a north pole always repels another north pole and attracts a south pole, while, on the other hand, a south pole always repels a south pole and attracts a north pole. This can be proved by suspending a magnetic needle like a pithball, and approaching another towards it, as illustrated in figure 26, where the north pole N attracts the south S. Obviously there are two opposite kinds of magnetic poles, as of electricity, which always ...
— The Story Of Electricity • John Munro
... measuring static electricity, differing from a galvanometer, which measures a current in a wire that acts on the magnetic needle of the galvanometer. ...
— Electricity for Boys • J. S. Zerbe
... remains a solid, and the vis inertiae of this fluid mass with the iron in it, occasions it to perform fewer revolutions than the crust of solid earth over it, and thus it is gradually left behind, and the place where the floating iron resides is pointed to by the direct or retrograde motions of the magnetic needle. This seems to have been nearly the opinion of Dr. ...
— The Botanic Garden - A Poem in Two Parts. Part 1: The Economy of Vegetation • Erasmus Darwin
... It will not be out of place here to recall Ampere's ingenious rule for remembering the direction in which a current urges the pole of a magnetic needle. "Suppose a man swimming in the wire with the current, and that he turns so as to face the needle, then the north pole of the needle will be ...
— Scientific American Supplement, No. 324, March 18, 1882 • Various
... mud obtained from the bottom, in the vicinity of our anchorage, revealed some shells of foraminifera. The density of the sea water, and the dip of the magnetic needle were ascertained here, as well as at other points in the Arctic; and as the observations are entirely new, I give the results in the accompanying tables. The water densities are from observations of Mr. F.E. Owen, Assistant Engineer ...
— The First Landing on Wrangel Island - With Some Remarks on the Northern Inhabitants • Irving C. Rosse
... inception of the culture of the silkworm and the discovery of the magnetic needle are attributed to the predecessors of Yao, probably on the principle that treasure-trove was the property of the King and that if no claimant for the honour could be found it must be attributed to ...
— The Awakening of China • W.A.P. Martin
... latitude could be determined within a minute, that is to say, to the third of a league. But such an approximate exactitude was not possible in deciding longitudes. When once the different phenomena of the variations of the magnetic needle, either of declination or inclination, should be fully understood, it would be easy; but how to obtain this knowledge? It was well known that in the Indian Sea, between Bourbon, Madagascar, and Rodriguez, a variation of four degrees in the declination of the needle was equivalent to a variation ...
— Celebrated Travels and Travellers - Part 2. The Great Navigators of the Eighteenth Century • Jules Verne
... a curtsey of approbation. She moved her little head with a quiver like that of the magnetic needle; raised her chin slightly as if she would ...
— Analytical Studies • Honore de Balzac
... as fortitude in the admiral to control. Having been three weeks at sea, and experienced the uniform course of the trade winds, they contended that, should they continue the same course for a longer time, the same winds would never permit them to return to Spain. The magnetic needle began to vary its direction. This being the first time that this phenomenon was ever noticed, it was viewed by the sailors with astonishment; they thought it an indication that nature itself had changed its laws, and that Providence was about to punish their audacity in venturing so far beyond ...
— The Columbiad • Joel Barlow
... variation of the barometer is only .084. So regular is the oscillation, as likewise the variations of the magnetic needle, that the hour may be known within fifteen minutes by the barometer or compass. Such is the clock-like order of Nature under the equator, that even the rains, the most irregular of all meteorological phenomena in temperate zones, tell approximately the hour of the day. ...
— The Andes and the Amazon - Across the Continent of South America • James Orton
... properties of the magnetic needle were not first applied to navigation, as has been thought, by Flavio Gioja, but long before his time, as early as the twelfth century, the compass came into general use. Navigation was no longer confined ...
— Outline of Universal History • George Park Fisher
... have thrown new light on this subject. Probably the Neapolitan pilot was the first who brought the compass into general notice in Europe; but long before 1303 (the year in which it was said to have been invented) the use of the magnetic needle ...
— Man on the Ocean - A Book about Boats and Ships • R.M. Ballantyne
... disaffection with its opportunity; and in the natural confusion which attended the revolt from the papacy, the obligations of duty, both political and religious, had become indefinite and contradictory, pointing in all directions, like the magnetic needle in a thunderstorm. ...
— The Reign of Henry the Eighth, Volume 1 (of 3) • James Anthony Froude
... and completeness of magnetic observations which was obtained by the new method, opened up fields of research which were hardly suspected to exist by those whose observations of the magnetic needle had been conducted in a more primitive manner. We must reserve for its proper place in our course any detailed description of the disturbances to which the magnetism of our planet is found to be subject. Some ...
— Five of Maxwell's Papers • James Clerk Maxwell
... none that man has ever penned in their fascination. The lights, as I have already intimated, display astonishing colors, particularly shades of red and green, as they flit from place to place in the sky. The discovery that the magnetic needle is affected by the Aurora, quivering and darting about in a state of extraordinary excitement when the lights are playing in the sky, only added to the mystery of the phenomenon until its electro-magnetic nature had been established. ...
— Curiosities of the Sky • Garrett Serviss
... the body were affected, more or less, by the extreme rarity of the air at that height. Its dryness caused wet parchment to crisp. He observed that the action of the magnetic needle diminished as he ascended, sounds gradually ceased to reach his ear, and the wind itself ceased ...
— Willis the Pilot • Paul Adrien
... due to Wheatstone, was similar to that of Schilling, and based on the principle enunciated by Ampere—that is to say, the current was sent into the line by completing the circuit of the battery with a make and break key, and at the other end it passed through a coil of wire surrounding a magnetic needle free to turn round its centre. According as one pole of the battery or the other was applied to the line by means of the key, the current deflected the needle to one side or the other. There were five separate circuits actuating five different needles. The ...
— Heroes of the Telegraph • J. Munro
... has made us, who are embodied spirits; he, therefore, can make unembodied spirits. If we cannot understand how such spirits exist, we should consider the limited powers of our minds, and that we cannot understand many things which are indisputably true. No one yet knows why the magnetic needle points to the north; yet you, who have never seen a magnet, do not hesitate to believe that it has this tendency, because you have been well assured of it, both from books and in conversation. Since, therefore, ...
— A Sicilian Romance • Ann Radcliffe
... tend the soul, Like the magnetic needle to the Pole; But what were that intrinsic virtue worth, Suppose some fellow, with more zeal than knowledge, Fresh from St. Andrew's College, Should nail the conscious ...
— The Poetical Works of Thomas Hood • Thomas Hood
... either of them would be! That he was undertaking a task from which either of them would have shrunk in horror never occurred to him. Yonder, beyond the summit, lay his destiny—Johnstown—and this was the way toward it; it was a simple thing to Bull. He could no more vary from his course than a magnetic needle can vary from ...
— Bull Hunter • Max Brand |
