Visual Acuity with Lights of Different Colors and Intensities PDF Download
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Author: David Edgar Rice
Publisher:
ISBN:
Category : Vision
Languages : en
Pages : 72
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Author: David Edgar Rice
Publisher:
ISBN:
Category : Vision
Languages : en
Pages : 72
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Book Description
Author: David Edgar Rice
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: David Edgar Rice
Publisher: Forgotten Books
ISBN: 9780656089932
Category : Science
Languages : en
Pages : 66
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Excerpt from Visual Acuity With Lights of Different Colors and Intensities Along with the increase in intensity secured by the use of the improved types of lamps have come also wide variations in the hues of the lights in common use. The carbon filament incandescent lamp is the only one of the new types whose color tone approximates that of the old time gas flame. The variations extend from the brilliant white of the Welsbach mantle and the tungsten filament lamp to the strongly colored light of such sources as the mercury vapor arc and the flaming are, in which certain parts of the spectrum decidedly predominate, and other parts may be entirely lacking. Further than this, the high intrinsic brightness of these recently developed types makes it possible to vary the hue at pleasure by the use of colored shades, which, notwithstanding their high absorptive indices, nevertheless transmit sufficient light to serve for ordinary purposes. 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: D. E. Rice
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Category :
Languages : en
Pages :
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Author: Helga Kolb
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author:
Publisher:
ISBN:
Category : Electronic journals
Languages : en
Pages : 876
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Author:
Publisher:
ISBN:
Category : Lighting
Languages : en
Pages : 916
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Author:
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ISBN:
Category : Philosophy
Languages : en
Pages : 740
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Covers topics in philosophy, psychology, and scientific methods. Vols. 31- include "A Bibliography of philosophy," 1933-
Author:
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ISBN:
Category : Physiological optics
Languages : en
Pages : 432
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Author: Charles Sheard
Publisher:
ISBN:
Category : Physiological optics
Languages : en
Pages : 878
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