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Excerpt from A Text-Book of General Physics: For the Use of Colleges and Scientific Schools The class of students for which this text-book is designed is supposed to have a useful knowledge of trigonometry, but not of calculus. This is in agreement with the courses of instruction in most of our American colleges; but it has ordinarily the disadvantage of leaving rather a large inter val between the study of the philosophy of physics and the application of its principles to engineering. Especially true is this of thermodynamics and electricity where it is Often difficult for the student to recognize the fact that the un accustomed mathematical processes are simply easier means of attaining an understanding of a physical problem and not an end in themselves. For this reason the subjects men tioned are developed with somewhat more completeness than usual, so that the engineering student can find the essential notions of his advanced work logically connected with those acquired at an earlier time. Of course such an extension implies an exercise of choice on the 'part of the teacher as to what may be omitted in first reading with a class of which only a portion expects to pursue the subject farther. In Chapter XLI will be found a treatment, quite ele mentary in character, of the limiting powers of optical instruments. This is, of course, of great philosophical in terest, because it is by the means of such instruments that we attain the greatest enlargement of our intellectual horizon. Notwithstanding the simplicity of the exposition, it does-not seem to have been done before in unmathematical language. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com 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.
Excerpt from A Text-Book of General Physics: For the Use of Colleges and Scientific Schools The most marked improvement in the method of recent text-books on physics is the growing tendency to emphasize the essential continuity of the science. It is true that physics, as a matter of convenience, still has to deal with certain phenomena of the sensations of sound and of light, which logically belong to physiology or psychology; but there is comparatively little difficulty in so isolating these portions of the text from those which may be dealt with in a purely objective way that there need remain no reason for the mental confusion which so often arises from the natural tendency to accept a sensation as a just measure of its awakening cause. Thus, if we set aside Chapters XXXIV and XLIV of the following pages, which treat primarily of the relations of sensations to their physical causes, and which will doubtless long be wanting in the scientific precision that characterizes other portions of physics, we find that all the remainder can be described as a strictly quantitative study of various transferences and transformations of energy. An understanding of energy is, therefore, absolutely essential to a satisfactory intellectual grasp of physics. This can only be attained by sustained study of dynamics, whence elementary mechanics must be regarded as the logical basis of the whole science of physics. No pains should be spared on the part of the student in attaining clear notions on this portion of his course. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com 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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This textbook provides a thorough introduction to the principles of general physics, aimed at high school and college students. Author Joseph Ames covers topics such as mechanics, heat, sound, and light, providing clear explanations and numerous examples. With detailed illustrations and practical exercises, students can gain a solid understanding of fundamental physics concepts. 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 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. 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.
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Excerpt from Text-Book of General Physics for High Schools and Colleges The Ether. - A careful study of the phenomena of light led philosophers many years ago to the belief that there is present in space another medium for phenomena than that furnished by ordinary matter. As we shall see later, there is every reason for believing that throughout the vast regions of space in the solar system, and beyond, ordinary matter is absent, except in certain cases as thin atmospheres around the planets and stars; it is also known that the sensation which we call light is due to the fact that waves enter the eye; therefore, when one sees a star, one has evidence that waves have left the star and have crossed space void of ordi nary matter. There must be present, then, in this space a medium that can carry waves: it is called the ether (sometimes and its properties will be discussed more fully in what follows. Similarly, in order to explain many electrical and magnetic phenomena, it was necessary to assume the existence of a medium different from ordinary matter, and one of the great achievements of the last century was the proof that this medium was the ether. There is, moreover, at present no evidence of the existence in our uni verse of any other media than ordinary matter and the ether. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com 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.
Written over a century ago, this textbook offers an introduction to the principles of general physics. Suitable for college students, the book covers topics such as mechanics, heat, sound, light, and electricity. The book also includes exercises and problems for students to tackle. 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 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. 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.