These were bought by George Westinghouse, who was determined to supply America with the Tesla system, which eventually won out as the superior technology and became the standard power in the 20th century.Īfter receiving a patent on the electric transmission of power in May of 1888, Tesla subsequently demonstrated alternating current electricity at the World Columbian Exposition in Chicago in 1893. ![]() Tesla developed polyphase alternating current systems of generators, motors and transformers, eventually holding 40 basic US patents. In a DC system, line losses required additional power stations at two-mile intervals. With a transformer, the AC voltage can be stepped up, and the current correspondingly stepped down, to minimize resistive heating losses in the transmission lines over long distances. Edison espoused DC, which flows continuously in one direction, whereas AC typically changes direction 50 or 60 times per second. He came to the US the following year and took a job in Thomas Edison's lab, but the two men quickly found themselves at odds over direct current (DC) versus alternating current (AC). He spent some time with the Continental Edison Company in Paris designing dynamos, and in 1883 he built a prototype of the induction motor and ran it successfully. In February 1882 he discovered the effects of a rotating magnetic field, which has found widespread application in electrical devices that use alternating current. But he soon became fascinated with electricity, and began his career as an electrical engineer with a Hungarian telephone company in 1881, which is where he first devised the concept of the induction motor. He studied at the Polytechnic Institute in Graaz, Austria, and the University of Prague, initially intending to specialize in physics and mathematics, against his family's desire that he follow his father in an ecclesiastical career. Tesla was born in July 1856 in Smiljan, Lika, a region of Croatia, the son of a Serbian Orthodox priest. And while the general public associates Thomas Edison with its invention and the development of transmission processes, the methods used today are largely due to the efforts of Nikola Tesla. ![]() Electric power is an aspect of modern life that most of us take for granted.
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