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Search - Ultraviolet Radiation

Ultraviolet Radiation
Author: M. Luckiesh

ULTRAVIOLET RADIATION MtooW ULTRAVIOLET RADIATION ITS PROPERTIES, PRODUCTION, MEASUREMENT, AND APPLICATIONS BY M. LUCKIESH, D. Sc. DIRECTOR OF APPLIED SCIENCE, NELA RESEARCH LABORATORIES NATIONAL LAMP WORKS OF GENERAL ELECTRIC CO. Author of Color and Its Applications, 1 Light and Shade and Their Applications, The Lighting Art, The Language of Co... more »lor, Artificial Light Its Influence Upon Civilization, Light ing The Home, Visual Illusions, The Book of The Sky, etc. SECOND PRINTING NEW YORK D. VAN NOSTRAND COMPANY, INC. EIGHT WARREN STREET 1927 At Trinity College in Cambridge, stands a marble statue of Sir Isaac Newton holding a prism in his hand. This thoughtful silent face impressed Wordsworth as, The marble index, of a mind forever Voyaging through strange seas of Thought, alone. It is to the memory of this great man, who illuminated the pathway leading to the discovery of invisible radiation, that this book is dedicated. PREFACE During the six score years which have elapsed since the discovery of ultraviolet radiation a great deal of atten tion has been given to its properties, production, and applications. As a consequence of this widening acquaint ance with ultraviolet radiation, this form of energy is now of practical value to the chemist, the physicist, the engineer, the biologist, the ophthalmologist, the physician and others. Many sources of ultraviolet radiation are now available and the applications are rapidly increasing in number. Unfortunately much of the literature on the subject is confusing, owing to the lack of care in the choice of definitions, and limited in value, owing to care lessness in specifying important factors such as those pertaining to the spectral character of the radiation. It is the primary aim of this book to present authentic data of such scope as to be useful to those who are interested in ultraviolet radiation. Theory has pur posely been subordinated to experimental facts because the latter are not affected by the inevitable changes in theory. The author has drawn freely from the work of others although by no means is it claimed that all the best work has been included. In covering the scope in mind it has been necessary to choose among a large number of investigations. Many references have been presented and it is hoped that these will increase the usefulness of the book. March 20, 1922 M. LUCEIESH vu CONTENTS Chapter Page I. Introduction 1 II. Solar Radiation 15 III. Transparency of Gases 36 IV. Transparency of Liquids 46 V. Transparency of Solids 72 VI. Transparency of Glasses. . 79 VII. Reflection of Ultraviolet Radiation 93 VIII. Ultraviolet Radiation in Common Illuminants 107 IX. Experimental Sources 133 X. Detection and Measurement 165 XL Effects Upon Living Matter 204 XII. Various Photochemical Effects 223 LIST OP PLATES PLATE PAGE I. Absorption Spectra of Eye-Media Frontispiece n. The transmission of various media for ultraviolet radiation from the iron arc as obtained by a quartz prism spectrograph 72 in. Two ultraviolet spectra of the tungsten arc and two of the iron arc as obtained by a quartz prism spectrograph 93 IV. Ultraviolet spectra of the ordinary carbon arc, the iron arc, and the quartz mercury arc as obtained by various photographic ex posures 107 V. The white flame arc a powerful source of near ultraviolet radiation 116 VI. The quartz mercury arc shown with the quartz arc exposed and also as used for exposing materials to its radiation 127 VII. The ultraviolet spectra of the tungsten arc through quartz, at various currents and photographic exposures 183 VIII. Ultraviolet transmission spectra of clear and cobalt glasses as ob tained by a quartz prism spectrograph 165 IX. The radiation from the quartz mercury arc employed in a recir culating drinking-water system in a large factory 204 X. Radiant energy is finding many applications in therapeutics 211 XI. The white flame arc as used in dye-testing 223 XII. The carbon arc as used in blue-printing 237

ISBN-13: 9781406773958
ISBN-10: 1406773956
Publication Date: 3/15/2007
Pages: 296
Rating:

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Publisher: Slusser Press
Book Type: Paperback
Members Wishing: 0
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