Excerpt from The Theory of Elliptic Integrals: And the Properties of Surfaces of the Second Order
The idea of substituting, as a means of investigation, an ideal ellipsoid, having certain relations with the actually revolv ing body, claims the illustrious Legendre as its author. Al though he conducts his own investigations on principles altogether different, be yet seems well aware of the use which might be made of this happy conception. In his Traz'té dc.
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Excerpt from The Theory of Elliptic Integrals: And the Properties of Surfaces of the Second Order
The investigations given in the following pages were made, the greater portion of them, several years ago. Some of them appeared from time to time in those periodical publications whose pages are open to discussions on subjects of this nature.
In this treatise a complete investigation has been attempted of the laws of the motion of a rigid body round a fixed point, free from the action of accelerating forces, based on the properties of surfaces of the second order, of the curves in which these surfaces intersect, and on the theory of elliptic integrals. The results which have been obtained are exact and not approximate, general and not restricted by any imposed hypothesis.
That the theory of the rotation of a rigid body round a fixed point might be made to rest on the properties of the ellipsoid, was long ago shown by Legendre, and more recently by Poinsot in his brief but elegant tract, the "Theorie nouvelle de la Rotation des Corps." Professor De Morgan very justly observes, in his great work on the Differential and Integral Calculus, "that the long, isolated, and inelegant investigations which usually fill up the chapters of works on dynamics which treat of rotatory motions might be almost entirely avoided, if the student were supposed to have that knowledge of the ellipsoid which he is supposed to have of the ellipse before he reads on the theory of gravitation." The ultimate analysis, however, or the dynamical solution of this problem, must be sought in the evaluation of those mathematical expressions known as elliptic integrals. At this point writers usually have abandoned the subject, or confined themselves to the discussion of particular hypotheses, and the deduction of approximate results.
About the Publisher
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This 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.
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Paperback. Condición: New. Print on Demand. This book explores the motion of a rigid body around a fixed point when not acted upon by accelerating forces, drawing on the properties of ellipsoids, curves, and elliptic integrals. Motions of this kind are typically determined by differential equations, which the author presents in a manner accessible to those moderately versed in integral calculus. The author's incorporation of geometrical conceptions enhances clarity and simplicity, preserving the elegance of analysis. The book's main contribution is its reduction of the problem of motion of a rigid body to three positions: the positions of the axes, the axes themselves, and the body's motion during the defined time. This reduction is accomplished through the author's focus on the motion of a certain ellipsoid, where the axes of the ellipsoid are assumed proportional to the inverse square roots of the moments of inertia around the principal axes of the body, coinciding with them in direction. The author demonstrates that the time and other quantities must be determined by the aid of elliptic functions, then develops those functions, revealing previously unknown properties of these curves. The author also posits a new geometrical representative for elliptic functions of the first order, introducing a new curve with close analogies to the plane parabola, which they name the "spherical parabola." This curve is the gnomonic projection of a plane parabola touching a sphere at its focus. This discovery leads the author to establish the formula for the comparison of elliptic integrals of the third order, a formula usually attributed to Legendre. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Nº de ref. del artículo: 9781330872932_0
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PAP. Condición: New. New Book. Shipped from UK. Established seller since 2000. Nº de ref. del artículo: LW-9781330872932
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PAP. Condición: New. New Book. Shipped from UK. Established seller since 2000. Nº de ref. del artículo: LW-9781330872932
Cantidad disponible: 15 disponibles