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Transmission of Radiant Energy by Ophthalmic Glasses

Transmission of Radiant Energy by Ophthalmic Glasses
Author: Charles Sheard
Publisher: Createspace Independent Publishing Platform
Total Pages: 96
Release: 1921
Genre: Eyeglasses
ISBN:

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Transmission of radiant energy by ophthalmic glasses : Being an Essay Contributed to the American Encyclopedia of Ophthalmology (1921)


TRANSMISSION OF RADIANT ENERGY

TRANSMISSION OF RADIANT ENERGY
Author: Charles 1883- Sheard
Publisher: Wentworth Press
Total Pages: 92
Release: 2016-08-29
Genre: History
ISBN: 9781374305557

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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.


Transmission of Radiant Energy by Ophthalmic Glasses

Transmission of Radiant Energy by Ophthalmic Glasses
Author: Charles Sheard
Publisher: Forgotten Books
Total Pages: 94
Release: 2016-08-21
Genre: Technology & Engineering
ISBN: 9781333309947

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Excerpt from Transmission of Radiant Energy by Ophthalmic Glasses: Being an Essay Contributed to the American Encyclopedia of Ophthalmology A considerable number of pages have been devoted to a discussion of the nature and distribution of radiant energy and various common methods of producing and investigating ultraviolet, visible and infra red radiations, in order that the full significance of the data presented in the remainder of the essay may be disclosed. 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.


Radiant Energy and the Ophthalmic Lens

Radiant Energy and the Ophthalmic Lens
Author: Frederick Booth
Publisher: Legare Street Press
Total Pages: 0
Release: 2023-07-18
Genre: History
ISBN: 9781021643278

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This pioneering work on the use of radiant energy in ophthalmology is a must-read for anyone interested in the history of medical science. The author, a noted ophthalmologist and scientist, provides a detailed account of his experiments and research on the effects of radiant energy on the human eye. He also explores the potential applications of this technology for the treatment of various eye disorders. With clear language and detailed illustrations, this book is an accessible introduction to an important area of medical research. 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.


Transmission of the Ocular Media

Transmission of the Ocular Media
Author: Edward A. Boettner
Publisher:
Total Pages: 60
Release: 1962
Genre: Infrared radiation
ISBN:

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The spectral transmittance of ultraviolet, visible, and near infrared light through the ocular media of humans has been measured. Using freshly enucleated eyes, the transmittances of each component part (cornea, aqueous humor, lens, vitreous humor) were determined for the wavelength range from 0.22 to 2.8 microns. To date 9 eyes have been measured, ranging in age from 4 weeks to 75 years. Two types of measurements were made: the first to measure the total light transmitted (direct and scattered) at each wavelength and the second to measure the percent transmittance of that light passing directly through the various media without absorption or scattering. The results show that: (a) the transmission of ultraviolet radiation decreases with the age of the eye; (b) the transmission of infrared radiation appears to be independent of the age; and (c) the maximum total transmittance of the whole eye, about 81 percent, is obtained in the region from 600 to 850 millimicrons.