Manual of Instruction in Hard Soldering: With an Appendix on the Repair of Bicycle Frames; Notes ... by Harvey Rowell

Author:Harvey Rowell
Language: eng
Format: epub
Publisher: E. & F.N. Spon, limited
Published: 1905-03-25T05:00:00+00:00

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An Elementary Treatise for the Use of

ELECTRICAL ARTISANS AND SCIENCE TEACHERS. By J. A. Fleming, M. A., D.Sc, F.R.S.

Synopsis of Contents.

Magnetic classification cf substances. Electro-TnajSfnetism. Mag netic rctentiv'ity and coercivity. Structure of a magnet. Substance and energy. Physical measurements. Fundamental units. The Metric system. The C. G. S. system derived units. A unit magnetic pole. Moment of a maj^net, magnetic fields and magnetic couples. Magnetic flux. Ma2:nct:c reluctivity and reluctance. Magnetomotive force. Action of a magnetic field on a magnetic substance. Practical measurements of magnetic flux and ma^etic force. Electric currents and electro motive force. Production of an electric current. Practical forms of Voltaic cells. Standard cells. Thermo-electric currents. Maj;neto-electric currents. Measurement of electric currents. Construction of a tangent galvanometer. Definition of the practical unit of current—one ampere. Practical electrical unit. Ohm's law. Faraday's discovery of electro-magnetic induction. Ballistro galvanometer. Induced electric currents. Mutual inductance. Conductors cutting magnetic flux. Faraday's disc. The direction of the induced electro-motive force. Hand rule curves. Steinmetz law. Electro-magnets. Lifting power of electro-magnets. Construction of electro-magnets for various purposes. Effect of heat on magnetic properties. Alternating or periodic currents. Inductance. Alternating current transformers. Transformer distribution. Construction of alternating current trans formers. Induction coil. Electric measuring instruments. Curre-t carrying capacity of wire. Alternate current instruments. The dynamo. * Alternators. Appendix. The measurement of the Earth's Horizontal magnetic field strength. '^

408 pages, 135 illustrations, i2mo, doth, $ .00

fINSBURY TBGHNIGAL MANUALS.

Elementary

TELEGRAPHY AND TELEPHONY

BY

ARTHUR GROTGH.

Extract from Preface.

"This work is intended to cover the intermediate ground between electricity and magnetism proper and the twin subjects of telegraphy and telephony.

** The elementary student does not desire to traverse the whole field of electricity, either the science or its application, but to understand such leading principles of the one as are necessary to a comprehension of simpler systems of the other. It has, therefore, been the author's aim to treat the subjects as fully as possible from this point of view, and to lay a firm foundation for the acquisition of larger future knowledge."

Contents of Chapters.

I.—Magnetism.

II.—Terrestrial Magnetism—Magnetic Theory.

III.—Static Electricity.

IV. —Electrostatic Induction—Condensers.

V.—Dynamic Electricity—The Voltaic Cell.

VI.—Primary and Secondary Cells.

VII.—Resistance, Current and Electromotive Force.

VIII.—Effects of Current—Galvanometers.

IX.—Induction.

X.—Cross-Section—Combined Resistances.

Xl.—Joining-Up of Cells—Universal Battery System.

XII.—Telegraphy : Single Needle—Sounder.

XIII.—Relays—^Double-Current Working, etc.

XIV.—Wheatstone A B C—Steljes Recorder.

XV.—Differential Duplex.

XVI.—Bridge Duplex.

XVI I. ^Submarine.

XVI11 .—The Telephone.

XIX.—Telegraph and Telephone Lines.

XX.—Elements of Testing. Index.

VII+223 Pages, 238 Illustrations, 8vo, Cloth, $2.oo.

A History of ELECTRIC TELEGRAPHY

TO THE YEAR 1837.

Chiefly itmpUed from Original Sources and Hitherto UhpubHshed

Documents,

By J. J. KAHIE.

CONTENTS.

In this work the author has divided the History of Electricity into three pa/-ts, (I) static, or frictional electricity, (2) dynamic, or galvanic electricity and (3) electro-magnetism and magneto-electricity. These in their turn are divided into three classes, electrical, galvanic (chemical), and electro-magnetic; and each class treated chronologically, follows naturally the corresponding part of the history of electricity up to the year 1837.

This work will be found valuable as a book of reference, and no electrical library is complete without a copy.

542 pages, 35 illustrations, i2mo., cloth, I3.00.

Philip Rels,

Inventor of THE TELEPHONE.

A Biographical Sketch,

With Documentary Tt'stimom\ Translations of the Original Papers of the

Inventor and Contemporary Publications,

By F*rof.

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