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An introduction to dynamics; containing the laws of motion and the first three sections of the Principia - Softcover
Synopsis
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 edition. Excerpt: ... INTRODUCTION TO DYNAMICS. Section I. DEFINITIONS, PRINCIPLES. AND LEMMAS. Subsection I. Geometrical Definitions, Postulates, and Lemmas. newton. Principia. Book I. Section /. In the following reasonings, certain hypotheses are assumed, (as that two points are taken in a curve, near to each other, or that a finite magnitude is divided into many small parts,) and certain constructions are made upon these hypotheses. The hypothesis is then extended indefinitely, the spaces and numbers which it involves being supposed to become greater or smaller than any given magnitudes; (for instance the two points in the curve are supposed to approach indefinitely near to each other; or the parts of the finite magnitude are supposed to become indefinitely numerous and indefinitely small.) The properties of the construction above mentioned, will, in consequence of this extension of the hypothesis, approach constantly to certain properties, which are the properties in the ultimate form of the hypothesis. The values of any of the magnitudes so deduced from a construction are called their ultimate or limiting values; and ratios so deduced are called ultimate or limiting ratios. These are sometimes also called prime ratios, the hypothesis being supposed to be extended from its ultimate form, instead of to it. A The quantities of which we have to consider the ratios, may vanish in the ultimate form of the hypothesis. Their ratio is then sometimes called their vanishing ratio. Objection 1. There are no ultimate values or ratios: for by an indefinite extension of the hypothesis we cannot arrive at definite properties. Answer. By an indefinite extension of the hypothesis we do approach, in general, to definite properties, as will be seen in succeeding propositions. The...
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About the Author
William Whewell (1794-1866) was a professor of mineralogy (1828-1832) and moral philosophy (1838-1855) at the University of Cambridge. For twenty-five years he was the Master of Trinity College at Cambridge. Whewell was the author of many books, including "History of the Inductive Sciences" and" Philosophy of the Inductive Sciences".
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- PublisherRareBooksClub.com
- Publication date2012
- ISBN 10 0217780873
- ISBN 13 9780217780872
- BindingPaperback
- LanguageEnglish
- Number of pages18
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