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Author: Robert Alfred Herman
Publisher:
ISBN:
Category : Geometrical optics
Languages : en
Pages : 366
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Book Description
Author: Robert Alfred Herman
Publisher:
ISBN:
Category : Geometrical optics
Languages : en
Pages : 366
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Book Description
Author:
Publisher: CUP Archive
ISBN:
Category :
Languages : en
Pages : 368
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Author: Robert Samuel Heath
Publisher:
ISBN:
Category : Geometrical optics
Languages : en
Pages : 386
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Author: William Steadman Aldis
Publisher:
ISBN:
Category : Geometrical optics
Languages : en
Pages : 204
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Author: Robert Samuel Heath
Publisher:
ISBN: 9780243663507
Category :
Languages : en
Pages :
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Author: Robert Alfred Herman
Publisher: Legare Street Press
ISBN: 9781017295887
Category : History
Languages : en
Pages : 0
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Book Description
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.
Author: Robert Alfred Herman
Publisher:
ISBN: 9781332589784
Category : Science
Languages : en
Pages : 360
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Book Description
Excerpt from A Treatise on Geometrical Optics In this treatise one of my aims has been to introduce a new method of determining the properties of a symmetrical optical instrument, in which the angle of divergence of a small pencil, rather than any coordinate of its origin, has been adopted as the leading feature. By this method, which is implicitly contained in Cotes's well-known theorem of the apparent distance, all the cardinal properties, notably the power of the system, follow immediately from the application of a simple geometrical formula. Although that theorem dates from the middle of the eighteenth century, yet the present method needs the help of Helmholtz's theorem to render it complete; hence the priority of the proof of the existence of the cardinal points rests with Gauss. But the analytical method adopted by the latter tends, in my opinion, to disguise the essential fact that geometrical foci exist only as a first approximation; and in any particular case a lengthy calculation is necessary to obtain the final convergent of the continued fraction on which his results depend. The simplification that results from the use of the angle of divergence will, I think, be clear on reference to Chapter V. and to the chapter on Aberration. I have attempted to obviate as far as possible the difficulties of sign that arise in connection with the directions in which distances are to be measured by the convention that all lengths on the same straight line are to be treated as algebraical quantities, and, where an origin of light is the origin of measurement, by taking the direction in which the light travels as positive. 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.
Author: Robert Samuel Heath
Publisher: Palala Press
ISBN: 9781357692247
Category :
Languages : en
Pages :
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Book Description
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.
Author: James Powell Cocke Southall
Publisher:
ISBN:
Category : Geometrical optics
Languages : en
Pages : 624
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Book Description
Author: Robert Samuel 1858 Heath
Publisher: Wentworth Press
ISBN: 9781373044037
Category : History
Languages : en
Pages : 418
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Book Description
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.
