Books with title Treatises on electricity, galvanism, magnetism, and electro-magnetism 1832

Excerpt from Treatises on Electricity, Galvanism, Magnetism, and Electro-MagnetismFor the many deficiencies which I fear the reader will discover in the completion of this design, I have to plead, in extenuation, the very scanty portion of leisure which the continual pressure of my professional duties leaves at my disposal. When I undertook this task, at the request of the Society, above four years ago, I was far from anticipating the extent of the labour it has imposed upon me; and from the multiplied interruptions to which I have been subject, I have been compelled to prosecute the work in a desultory manner, and at irregular and uncertain intervals.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Excerpt from A Treatise on Electricity and Magnetism, Vol. 1This work is based upon a course of Lectures delivered by one of us in the College de France in the last few years. It will comprise two parts: the first, which is principally theoretical, forms the present volume; the second, which will be more experimental in character, will be devoted to the examination of the various phenomena, the methods of measurement, and the principal applications.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Thb design of the preseni work it to offer a condensed and metbodloal CT reatiie on that important department of Natural Philosophy which iom0 pri e9 the diversified phenomena of Eiectricity and Magnetism Theie phenomena, which were formerly regarded aa tbeeffecta of two perfectly distinct agents, are now discovered to have an intimate relation to one another, and, in all probability, to be dependent on one and the same principle :in like manner as it was found by Newton, that the eimpler mechanical phenomena of the universe are the results of the tingle principle of gravitation. A succinct and connected account of the numerous discoveries which the exertions of philosophers have recently brought to light on this highly interesting branch of physical science, collected from the various scientific Journals and Transactions through which they are dispersed, and }digested in a didactic order, seemed to be particularly wanting, and to be especially calculated to further the objects of theS ociety for theD iffusion fof Useful Knowledge. In pursuance of this design, I have aimed at giving to the subjects treated as much condensation as was compatible with perN spicuity. I have endeavoured to conduct the student, by a regular progres sion, from the simpler to the more complex topics of research; and I have also been anxious, by placing constantly before his view the distinction which exists between ascertained facts, and the hypotheses and theories devised for their explanation, to illustrate the precepts of Bacon by examples, and to foster that genuine spirit of philosophical inquiry by which alone error can be avoided and truth attained. For the many deficiencies which I fear the reader will discover in the completion of this design, I have to plead, in extenuation, the very scanty portion of leisure which the continual pressure of my professional duties leaves a(Typographical errors above are due to OCR software and don't occur in the book.)

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1832 Excerpt: ...direction. (215.) Two plates of very soft iron must next be provided, equal in breadth to the surfaces containing the poles, and a little longer than those surfaces; so that, when applied to them, a portion of each plate shall project beyond the loadstone to a small extent. In fig. 58, Rr represents the sections of these iron plates affixed to the opposite sides of the loadstone L; and P p the projecting pieces. These projecting pieces should be much narrower than the other portion of the plates. For loadstones weighing less than an outice, the lower surfaces of the projections need not exceed the tenth of an inch; and so in proportion for larger loadstones. The thickness of the plates, also, must be regulated by the strength of the loadstone, and can scarcely be determined without previous trial in each particular case. The best way, therefore, is to make them tolerably thick at first; and then file off successive layers, until we And, by actual experiment on the power of the loadstone after each reduction, that we cease to obtain any advantage; for the power increases gradually to a certain limit, at which the filing ought to be discontinued. The armature of a loadstone should be fixed on it very firmly, by wires, or by an external case, which should be made of any metal which is not susceptible of magnetism. Loadstones are sometimes cut into a spherical shape, in imitation of the earth, and are then called terrellar. Their armatures should, in that case, be adapted to the curvature of the surface, and should each cover about a quarter of that surface. (216.) The addition of armatures to a loadstone is found to have a very favourable effect in augmenting its strength, and this increase of strength goes on for a considerable time after they have been appli...

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.