Archives of Radiology and Electrotherapy, Vol. 22
Author: Robert Knox
Publisher: Forgotten Books
Published: 2018-01-19
Total Pages: 426
ISBN-13: 9780483413580
DOWNLOAD EBOOKExcerpt from Archives of Radiology and Electrotherapy, Vol. 22: June, 1917 To illuminating engineers the processes involved in luminescence have therefore a direct interest, apart from the wider aspects of these phenomena. One of the most familiar examples of such effects is the firefly, the luminous efficiency of which is believed to be far higher than any existing illuminant, and other insects and marine forms of life have similar properties. The production of light appears to be due to chemical action. The glow of phosphorus (from which the term phosphorescent is derived) in the dark is due to slow oxidation, and luminosity may also be produced by the oxidation of pyrogallic acid and other organic materials. Such effects are termed chemi luminescence. 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.
