Elisha Gray (August 2, 1835 – January 21, 1901) was an American electrical engineer who co-founded the Western Electric Manufacturing Company. Gray is best known for his development of a telephone prototype in 1876 in Highland Park, Illinois and is considered by some writers to be the true inventor of the variable resistance telephone, despite losing out to Alexander Graham Bell for the telephone patent.

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INTRODUCTION v I. THE AUTHOR'S DESIGN 1 II. HISTORY OF ELECTRICAL SCIENCE 6 III. HISTORY OF MAGNETISM 20 IV. THEORY AND NATURE OF MAGNETISM 25 V. THEORY OF ELECTRICITY 39 VI. ELECTRICAL CURRENTS 49 VII. ELECTRIC GENERATORS 62 VIII. ATMOSPHERIC ELECTRICITY 77 IX. ELECTRICAL MEASUREMENT 83 X... Continue reading book >>