Makers of Electricity. James J. Walsh

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       James J. Walsh, Brother Potamian

      Makers of Electricity

      Published by Good Press, 2019

       [email protected]

      EAN 4057664621153

Table of Contents

       PREFACE

       ILLUSTRATIONS

       MAKERS OF ELECTRICITY.

       CHAPTER I. Peregrinus and Columbus.

       CHAPTER II. Norman and Gilbert.

       CHAPTER III. Franklin and Some Contemporaries.

       CHAPTER IV. Galvani, Discoverer of Animal Electricity.

       CHAPTER V. Volta the Founder of Electrical Science.

       CHAPTER VI. Coulomb.

       CHAPTER VII. Hans Christian Oersted.

       CHAPTER VIII. André Marie Ampère.

       CHAPTER IX. Ohm, the Founder of Mathematical Electricity.

       CHAPTER X. Faraday.

       CHAPTER XI. Clerk Maxwell.

       CHAPTER XII. Lord Kelvin.

       INDEX.

       OTHER BOOKS BY THE SAME AUTHOR

PREFACE

       Table of Contents

      This volume represents an effort in the direction of what may be called the biographical history of electricity. The controlling idea in its preparation was to provide brief yet reasonably complete sketches of the lives of the great pioneer workers in electricity, the ground-breaking investigators who went distinctly beyond the bounds of what was known before their time, not merely to add a fringe of information to previous knowledge, but to make it easy for succeeding generations to reach conclusions in electrical science that would have been quite impossible until their revealing work was done. The lives of these men are not only interesting as scientific history, but especially as human documents, showing the sort of men who are likely to make great advances in science and, above all, demonstrating what the outlook of such original thinkers was on all the great problems of the world around us.

      In recent times, many people have come to accept the impression that modern science leads to such an exclusive occupation with things material, that scientists almost inevitably lose sight of the deeper significance of the world of mystery in which humanity finds itself placed on this planet. The lives of these great pioneers in electricity, however, do not lend the slightest evidence in confirmation of any such impression. They were all of them firm believers in the existence of Providence, of a Creator, of man's responsibility for his acts to that Creator, and of a hereafter of reward and punishment where the sanction of responsibility shall be fulfilled. Besides, they were men characterized by some of the best qualities in human nature. Their fellows liked them for their unselfishness, for their readiness to help others, for their devotedness to their work and to their duties as teachers, citizens and patriots. Almost without exception, they were as far above the average of mankind in their personal ethics as they were in their intellectual qualities.

      The lives of such men, who were inspiring forces in their day, are as illuminating as they are instructive and encouraging. Perhaps never more than now do we need such inspiration and illumination to lift life to a higher plane of purpose and accomplishment, than that to which it is so prone to sink when material interests attract almost exclusive attention.

ILLUSTRATIONS

       Table of Contents

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The double pivoted needle of Petrus Peregrinus	17
First pivoted compass, Peregrinus, 1269	19
Magnetic Declination at New York	21
" " " San Francisco	21
" " in London, in 1580 and 1907	23
First dip-circle, invented by Norman in 1576	29
Norman's illustration of magnetic dip	31
Gilbert's orb of virtue, 1600	32
Behavior of compass-needle on a terrella or spherical lodestone	44
Gilbert's "versorium" or electroscope	69
Gordon's electric chimes, 1745	75