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Author: Robert Samuel Heath
Publisher:
ISBN:
Category : Geometrical optics
Languages : en
Pages : 386
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Book Description
Author: Robert Samuel Heath
Publisher:
ISBN:
Category : Geometrical optics
Languages : en
Pages : 386
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Book Description
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:
ISBN:
Category : Geometrical optics
Languages : en
Pages : 264
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Author: William Steadman Aldis
Publisher:
ISBN:
Category : Geometrical optics
Languages : en
Pages : 212
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Author: William Nathaniel Griffin
Publisher:
ISBN:
Category : Optics
Languages : en
Pages : 202
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Author: R. S. Heath
Publisher:
ISBN: 9781332616183
Category : Science
Languages : en
Pages : 256
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Excerpt from An Elementary Treatise on Geometrical Optics The present work is essentially an abridgment of my larger treatise on Geometrical Optics, and is primarily intended for the use of students who require an exposition of the principles of Optics and their application in the use and construction of optical instruments, without very extended and complicated mathematical analysis. It is elementary, inasmuch as it uses no mathematics beyond trigonometry. 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: William N. Griffin
Publisher:
ISBN: 9781331951797
Category : Science
Languages : en
Pages : 190
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Book Description
Excerpt from Treatise on Optics 1. When a material object is presented before us, we become by vision sensible of its existence and figure. In such a case light is said to be propagated from the object to our eyes, and the science of Optics has for its design the examination of the circumstances of such propagation. The science is divided into Geometrical and Physical Optics. In Geometrical Optics the circumstances of the transmission and modification of light are computed on certain laws established by experiment; in Physical Optics these laws are accounted for on hypotheses of the structure of bodies, and of the matter filling the space in which they are placed. In a similar manner in Geometrical Astronomy the phenomena of heavenly bodies are calculated on observed laws which their apparent motions are found to obey; in Physical Astronomy these apparent laws are shewn to result from the hypothesis of Gravitation. The former branch of the science is the subject of the present treatise, wherein from certain laws established by experiment under simple circumstances, the course of light under more complex circumstances is computed, and the results applied to the construction of Optical Instruments. 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: Stephen Parkinson
Publisher:
ISBN:
Category : Geometrical optics
Languages : en
Pages : 388
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Author: David Brewster
Publisher: Forgotten Books
ISBN: 9780282455828
Category : Science
Languages : en
Pages : 426
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Book Description
Excerpt from A Treatise on Optics Optics by Dr. Brewster was, principally, to introduce an Appendix, containing such a discussion of the subjects of Reflexion and Refraction, as might adapt the work to use in those of our colleges in which considerable exten. Sion is given to the course of N atural Philosophy. In this revision, I have thought it beet, without specially calling the attention of the reader to them, to correct such errors as my comparatively limited knowledge of the subject assured me, would not have been passed over by the author in e second Edition. 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: David Brewster
Publisher: Franklin Classics
ISBN: 9780341833079
Category :
Languages : en
Pages : 448
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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. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
