Includes three lectures by Tesla : I. Experiments with alternate currents of very high frequency, and their application to methods of artificial illumination, delivered before the American institute of electrical engineers at Columbia college, N.Y., May 20, 1891.--II. Experiments with alternate currents of high potential and high frequency, delivered before the Institution of electrical engineers, London, Feb. 3, 1892.--III. On light and other high frequency phenomena, delivered before the Franklin institute, Philadelphia, Feb., 1893, and before the National electric light association, St. Louis, March, 1893

Includes index

14

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