Introductory course of natural philosophy for the use of schools and academies. Ed. from Ganot's popular physics. By William G. Peck (1869)
Ganot, Adolphe, 1804-1887, Peck, William Guy, 1820-1892 · New York A.S. Barnes · leaf 462
and that of the Leyden jar. II. ELECTRO-MAGNETIC TELEGRAPHS. THE ELECTRO-MOTOR. ,The Electro-Magnet. 434. An Electro-Magnet is a magnet obtained by theuse of electricity. Electro-magnets are generallymade of soft iron, bent in theform of a horse-shoe, as shownin Fig. 299. Upon each branchis wound a… … Fig. 1299. In this way magnets may be constructed of immense power, sopowerful, in fact, as to support the weight of ten or twelve persons.Fig. 300 represents the method of arranging the details of a magnetwhich is intended to exhibit a great sustaining power. The plate in contact with the two…
Physics
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Rudiments of the art of building : represented in five sections [...] for the use of architects, builders, draghtsmen, machinists, engineers and mechanics (1853)](https://img.insideoutlibrary.com/img/200/ia-rudimentsofartof00bull-123-60.webp)