NIKOLA TESLA: A SHORT BIOGRAPHY Nikola Tesla, who discovered the rotating magnetic field, which is the basis of practically all alternating-current machinery, has been called the genius who ushered in the power age. ______________________________________________________________________ Nikola Tesla was born at precisely midnight between July 9/10, 1856, in the village of Smiljan, province of Lika (Austria-Hungary, now Croatia). His father, the Reverend Milutin Tesla, was a Serbian-Orthodox priest; his mother, Djuka (Mandich), was unschooled but highly intelligent. Both families came originally from western Serbia and for generations had sent their sons to serve Church or Army and their daughters to marry ministers or officers. A dreamer with a poetic touch, as he matured, Tesla added to these earlier qualities those of self-discipline and a desire for precision. Training for an engineering career, he attended the Technical University of Graz, Austria, and the University of Prague (1879-1880). At Graz he first saw the Gramme dynamo, which operated as a generator and, when reversed, became an electric motor; and he conceived a way to use alternating current to advantage. His first employment was in a government telegraph engineering office in Budapest, where he made his first invention, a telephone repeater. Later, he visualized the principle of the rotating magnetic field and developed plans for an induction motor, that would become his first step toward the successful utilization of alternating current. In 1882 Tesla went to work in Paris for the Continental Edison Company, and while on assignment to Strasbourg in 1883, he constructed, in after-work hours, his first induction motor. Tesla sailed to America in 1884, arriving in New York City with four cents in his pocket, a few of his own poems, and calculations for a flying machine. He first found employment with Thomas Edison in New Jersey, but the two inventors, were far apart in background and methods, and their separation was inevitable. In May 1885, George Westinghouse, head of the Westinghouse Electric Company in Pittsburgh, bought the patent rights to Tesla's polyphase system of alternating-current dynamos, transformers, and motors. The transaction precipitated a titanic power struggle between Edison's direct-current systems and the Tesla-Westinghouse alternating-current approach, which eventually won out. After a difficult period, during which Tesla invented but lost his rights to an arc-lighting system, he established his own laboratory in New York City in 1887, where his inventive mind could be given free rein. He experimented with shadowgraphs similar to those that later