A Text-book on Electro-magnetism and the Construction of Dynamos, Volume 1

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Macmillan, 1893 - Electric currents, Alternating - 289 pages
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Page 23 - That when we have external neutrality, or no apparent magnetism, the molecules, or their polarities, arrange themselves so as to satisfy their mutual attraction by the shortest path, and thus form a complete closed circuit of attraction.
Page 293 - An Elementary Treatise on Electricity. By James Clerk Maxwell, MA Edited by William Garnett, MA Demy 8vo. cloth, js.
Page 291 - The Electrical Researches of the Honourable Henry Cavendish, FRS Written between 1771 and 1781, Edited from the original manuscripts in the possession of the Duke of Devonshire, KG, by J.
Page 292 - JACKSON (DC): A Text-Book on Electro-Magnetism and the Construction of Dynamos. By DUGALD C. JACKSON, BS, CE, Professor of Electrical Engineering, University of Wisconsin. I2mo.
Page 24 - ... direction as regards the piece of steel, or a south pole if rotated in the opposite direction. Also, that in evident magnetism, we have still a symmetrical arrangement, but one whose circles of attraction are not completed except through an external armature joining both poles. 6. That we have permanent magnetism when the molecular rigidity, as in tempered steel, retains them in a given direction, and transient magnetism whenever the molecules rotate in comparative freedom, as in soft iron.
Page 293 - MAYCOCK. — A First Book of Electricity and Magnetism. For the Use of Elementary Science and Art and Engineering Students and General Readers. By W. PERREN MAYCOCK, MIEE With 84 Illustrations. Crown 8vo. 60 cents. MURDOCK. —Notes on Electricity and Magnetism. Designed as a companion to Silvanus P. Thompson s " Elementary Lessons in Electricity and Magnetism.
Page 23 - ... 1. That each molecule of a piece of iron, steel, or other magnetic metal is a separate and independent magnet, having its two poles and distribution of magnetic polarity exactly the same as its total evident magnetism when noticed upon a steel bar-magnet. 2. That each molecule, or its polarity, can be rotated in either direction upon its axis by torsion, stress, or by physical forces such as magnetism and electricity. 3. That the inherent polarity or magnetism of each molecule is a constant quantity...
Page 294 - Electricity. (/ the press.) WATSON and BURBURY: The Mathematical Theory of Electricity and Magnetism. By HW WATSON, D.Sc., FRS, and SH BURBURY, MA VOL. I. Electrostatics. 8vo. $2.75. VOL. II. Magnetism and Electrodynamics. 8vo. $2.60.
Page 158 - AC in the accompanying illustration), their resultant will be represented in magnitude and direction by the diagonal AR drawn from the intersection of the two component forces.

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