Books with title A treatise on light and vision 1831

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Excerpt from A Treatise on LightThis book is intended for students who have been through a first year's physics course and who are proceeding further with the study of light. It differs from other books on light by a more systematic treatment, also by dealing with the full s00pe of the subject and including the results of recent investigations.A good knowledge of elementary mathematics is assumed. The calculus is used, but I hope that the results Obtained by its aid will be intelligible to those who cannot follow the inter mediate steps, and in any case the greater part of the book is free from it.Of the 328 figures more than '270 have been specially drawn for the book.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis 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.

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.

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.

This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book. ++++ The below data was compiled from various identification fields in the bibliographic record of this title. This data is provided as an additional tool in helping to ensure edition identification: ++++ <title> A Treatise On Light And Vision<author> Humphrey Lloyd<publisher> Longman, Rees, Orme, Brown and Green, 1831<subjects> Light; Optics

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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. 1831 Excerpt: ...be increased in breadth, as it was before in length by the same causes, and should therefore appear square or rectangular. But the result is found to be otherwise: the image, rv, is not at all increased in breadth by the refraction of the second prism, but only becomes oblique to its former position, Rv, the upper or violet extremity, v, being translated farther from its former position than the lower or red extremity, r. Accordingly, the light which is most refracted by the first prism is again most refracted by the second; and that which is least refracted by the first is, in like manner, least refracted by the second. And since the sides of the oblique image, rv, are found to be rectilinear, as well as those of the first, Rv, it follows that every ray which is more or less refracted by the first prism, is, exactly in the same proportion, more or less refracted by the second. Further, if the image produced by the second prism be again laterally refracted by a third, and so on to any number of refractions, it is always found that the rays which are more or less refracted by the first prism are in the same proportion more or less refracted by all the rest, and this without any dilatation of the image in breadth. These rays are therefore justly considered to possess each a peculiar degree of refrangibility. (233.) The following experiment, however, may be considered as removing all doubt on this subject. Close behind the prism Bac is placed a board, pa, perforated with a small aperture, o, through which the refracted light is permitted to pass: this light is then received on a second board, T'q!, placed at a considerable distance from the first, and similarly perforated; so that a small portion of the light of the spectrum is suffered to pass through the ape...