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Author: William Elgin Wickenden
Publisher:
ISBN:
Category : Lighting
Languages : en
Pages : 212
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Book Description
Author: William Elgin Wickenden
Publisher:
ISBN:
Category : Lighting
Languages : en
Pages : 212
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Book Description
Author: Hermann Bohle
Publisher:
ISBN:
Category : Electric lighting
Languages : en
Pages : 244
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Book Description
Author: H. A. E. KEITZ
Publisher: Palgrave
ISBN: 9781349000142
Category :
Languages : en
Pages : 456
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Book Description
Author: William Edward Barrows
Publisher:
ISBN:
Category : Electric lighting
Languages : en
Pages : 360
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Author: William Edward Barrows
Publisher:
ISBN:
Category : Electric lighting
Languages : en
Pages : 440
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Book Description
Author: Hermann Bohle
Publisher:
ISBN:
Category : Electric lighting
Languages : en
Pages : 310
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Author: William Elgin Wickenden
Publisher: Palala Press
ISBN: 9781355797968
Category :
Languages : en
Pages : 210
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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: William Elgin Wickenden
Publisher: Forgotten Books
ISBN: 9781332142330
Category : Technology & Engineering
Languages : en
Pages : 206
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Book Description
Excerpt from Illumination and Photometry The preparation of this volume was undertaken with a view to providing an adequate text-book of the subject for the use of colleges of engineering. It is not intended to be a handbook of technical data nor a manual of practical instructions. Emphasis is therefore given to the scientific basis of the subject and to methods of rational analysis rather than to the description of processes of manufacture, structural details and prevailing practice. A condensed form of treatment has been sought throughout. In the work of instruction much of the subject-matter may profitably be amplified by lectures, supplementary reading and the working out of problems. Familiarity with the technique of photometry should be sought in the laboratory in connection with such a course. The material herein contained to a large extent represents the basis of a course in Illumination and Photometry given by the University of Wisconsin, and the author acknowledges with pleasure much helpful encouragement and many suggestions from Prof. Murray C. Beebe of that institution. 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: Hermann Bohle
Publisher: Forgotten Books
ISBN: 9781333487607
Category : Technology & Engineering
Languages : en
Pages : 240
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Book Description
Excerpt from Electrical Photometry and Illumination: A Treatise on Light and Its Distribution, Photometric Apparatus, and Illuminating Engineering This book is primarily intended as a text-book for second year engineering students. It contains in an amplified form the lectures delivered by the author during the session 1911. The subject of photometry and illuminating engineering has been somewhat neglected in the past, and whereas one finds scores of books on electrical machinery, there have been very few on photometry and lighting. Yet this subject is as important as, or even more so than, the design of dynamos and motors. It Is useless to raise the efficiency of generators and motors by 1 or 2 per cent. And afterwards to waste the power by improper illuminating engineering. Illuminating engineering is a combined science of physics and physiology. This has been far too little understood in the past, with the result that physiology has hardly been considered. Our knowledge of physiological science is still very meagre. We neither possess any apparatus with which we can measure the physiological quality of an illumination, nor have we been able to remove the difficulties which we encounter when lights of different colours are compared. For a long time - while englneers were busily engaged in perfecting the generating plant and the light-producing devices - the subject of illuminating engineering was left in the background, with the result that one often finds the finest buildings poorly lighted, not so much from the physical, as from the physiological standpoint. Especially, architects are to blame in this direction 3 any illumination is often considered good enough, as will be gathered from the fact that for a. Particular building costing the sum allocated by the architects for the lighting was only 100, in spite of the building being largely wanted for entertainments at night. Although the book is primarily intended for college students, it is hoped that it will be found useful by others interested in illuminating engineering, such as medical men, architects, teachers, and even the general public. The mathematics have been kept as elementary as possible, and persons not acquainted with higher mathematics may skip the deductions of the formulae without detriment. 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: John William Tudor Walsh
Publisher:
ISBN:
Category : Photometry
Languages : en
Pages : 562
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Book Description
