Other editions of book A Treatise On Electricity and Magnetism, Volume 1

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.

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. 1883 Excerpt: ...we have W dV--=--cos 8=-Fcos8=-(XA + Ye + Zk), as an X, Y and Z being the components of the force of the field, A, /t and v the direction cosines of the directions of magnetisation. The expression for the elementary energy is therefore dV =-(XI A. + Y I/+ Zlv) dv=-(AX + BY + CZ) dv, and hence the energy of the whole magnet is (20) W =-(AX + BY + CZ)dv. 8 being the angle which the magnetic axis makes with the direction of the field. This result may be written directly. The energy is a minimum and equal to-FK, and therefore the equilibrium is stable when the angle 8 is zero--that is to say, when the magnetic axis is parallel to the direction of the field. The equilibrium is unstable if these two directions are opposite; the energy is then a maximum and equal to FK. The energy, lastly, is zero if the two directions are at right angles. 339. Energy Of A Magnetic SHELL--If the system is a simple magnetic shell s, the magnetic moment of a surface-element of the shell is 4S and the value of its potential energy in the field is dW =-$ (AX + BY + vZ)dS; the energy of the shell is therefore W = The quantity in brackets (XA + Y/ + Zv) represents the projection Fn of the force of the field on the perpendicular to the shell; the product FnS is the flow of force of the field corresponding to the element dS; this flow is positive when it traverses the shell from the negative to the positive face, and negative when in the opposite direction. Hence the integral of the second member simply expresses the value of the flow limited to the edge, and therefore is independent of the form of the surface to which it is attached. Let Q be the value of this flow, the expression for the potential energy of the shell is (22) W=-Q. Consequently, the potential energy of a shell is equal t...

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.

This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book. ++++ The below data was compiled from various identification fields in the bibliographic record of this title. This data is provided as an additional tool in helping to ensure edition identification: ++++ <title> A Treatise On Electricity And Magnetism, Volume 1; A Treatise On Electricity And Magnetism; Jules François Joubert<authors> Éleuthère Élie Nicolas Mascart, Jules François Joubert<translated by> Edmund Atkinson<publisher> T. De La Rue, 1883<subjects> Science; Electricity; Electric measurements; Electricity; Magnetism; Science / Electricity; Science / Electromagnetism; Science / Magnetism

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.

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. 1883 Excerpt: ...is expressed by dW = mV = mtn = $inn. But the product mto is the flow of force which starts from the point in the angle o, and which therefore traverses the shell entering by the positive surface. The flow dQ which enters by the negative surface has the same value with the contrary sign-mo. We have thus AV=-3dQ. But the energy of a magnetic system in the field of the shell is the sum of the energies of different masses; it is therefore the product, taken with the opposite sign, of the magnetic strength of the shell by the sum of the flows of force which traverse it--that is to say, by the flow of force which starts from the system and enters the shell by the negative face. 341. If this system is a second shell S', the flow of force Q is proportional to the magnetic strength «£' of this second shell, and we rnay write Q = Mfc', the coefficient M being the flow of force which the former shell would receive, if the power of the second were equal to unity. The energy of the first shell, in the field of the second, is therefore The energy of the second shell in the field of the first has the same value, and is expressed in the same way, W=-t'£M', as a function of the flow of force which proceeding from the first would traverse the second; from it we infer (24) M = M'. Thus when two magnetic shells of equal strengths are in presence of each other, the flow of force which starts from one and traverses the other, entering by the negative face, is the same for both. It will be observed how analogous this property is with the theorem demonstrated above (63) relative to the electrostatic induction between two conductors. 342. Equation (22) shows that the energy of a shell in a magnetic field only depends on the flow of force which crosses the surface bo...

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 is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book.