Excerpt from The Capacity and Phase Difference of Paraffined Paper Condensers as Functions of Temperature and Frequency
To account for these evidences of a departure from the law of an ideal dielectric (according to which the charge at every moment is proportional to the instantaneous value of the impressed voltage) a number of theories of quite varied nature have been proposed, the most important of which will be considered below. Some of these are in qualitative agreement with the observed facts, but are at variance as regards the magnitude of the deviations from a perfect dielectric, while others give equations too complicated to admit of quantitative verification. Further, the great mass of the existing data refers to measurements with a steady emf, and under such a variety of conditions as regards temperature, length of charge, length of discharge, and previous treatment, as to render the task of deciding for or against any given' theory well-nigh impossible.
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PAP. Condición: New. New Book. Shipped from UK. Established seller since 2000. Nº de ref. del artículo: LW-9781333894993
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Librería: PBShop.store UK, Fairford, GLOS, Reino Unido
PAP. Condición: New. New Book. Shipped from UK. Established seller since 2000. Nº de ref. del artículo: LW-9781333894993
Cantidad disponible: 15 disponibles
Librería: Forgotten Books, London, Reino Unido
Paperback. Condición: New. Print on Demand. This book explores the relationship between the capacity and phase difference of paraffined paper condensers as functions of temperature and frequency through a series of detailed measurements and observations. The author conducted a set of experiments at two frequencies, 33 and 100 cycles per second, and at temperatures ranging from 10° to 35° in steps of 5° to examine the effects of external resistance on the condenser. A second set of measurements were recorded at 100, 300, 600, and 900 to 1000 cycles, and at temperatures of 10°, 25°, and 35°. The book examines various theories of absorption, including Maxwell's theory of a heterogeneous dielectric, Houllevigue's theory of frictional resistance, Pellat's theory, and von Schweidler's modified Pellat theory. The author concludes that Maxwell's theory, with some modification to account for the effects of temperature and frequency, provides the best explanation for the observed behavior of paraffined paper condensers. This book will be of interest to physicists and electrical engineers working with capacitors and dielectrics, and to historians of science interested in the development of our understanding of electrical phenomena. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Nº de ref. del artículo: 9781333894993_0
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Librería: Revaluation Books, Exeter, Reino Unido
Paperback. Condición: Brand New. 92 pages. 9.02x5.98x0.19 inches. This item is printed on demand. Nº de ref. del artículo: zk1333894996
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