Nikola Tesla (Serbian Cyrillic: Никола Тесла; 10 July 1856 – 7 January 1943) was a Serbian-American inventor, electrical engineer, mechanical engineer, physicist, and futurist who is best known for his contributions to the design of the modern alternating current (AC) electricity supply system.
Born and raised in the Austrian Empire, Tesla received an advanced education in engineering and physics in the 1870s and gained practical experience in the early 1880s working in telephony and at Continental Edison in the new electric power industry. Emigrating to the United States in 1884, where he would become naturalized citizen, Tesla worked for a short time at Edison in New York City before he struck out on his own. With the help of partners to finance and market his ideas, Tesla set up laboratories and companies in New York to develop a range of electrical and mechanical devices. His alternating current (AC) induction motor and related polyphase AC patents, licensed by Westinghouse Electric in 1888, earned him a considerable amount of money and became the cornerstone of the polyphase system that company would eventually market.
Attempting to develop inventions he could patent and market, Tesla conducted a range of experiments with mechanical oscillators/generators, electrical discharge tubes, and early X-ray imaging. He also built a wireless-controlled boat, one of the first ever exhibited. Tesla became well known as an inventor and would demonstrate his achievements to celebrities and wealthy patrons at his lab, and was noted for his showmanship at public lectures.
Throughout the 1890s Tesla would pursue his ideas for wireless lighting and worldwide wireless electric power distribution in his high-voltage, high-frequency power experiments in New York and Colorado Springs. Early on (1893) he made pronouncements on the possibility of wireless communication with his devices. He tried to put these ideas to practical use in his unfinished Wardenclyffe Tower project, an intercontinental wireless communication and power transmitter, but ran out of funding before he could complete it.
Tesla went on after Wardenclyffe to try to develop a series of inventions in the 1910s and 1920s with varying degrees of success. Having spent most of his money, he lived in a series of New York hotels leaving behind unpaid bills. The nature of his earlier work and pronouncements he made to the press later in life earned him a reputation in popular culture as an archetypal "mad scientist". Tesla died on 7 January 1943 in New York City. His work fell into relative obscurity after his death, but in 1960, the General Conference on Weights and Measures named the SI unit of magnetic flux density the tesla in his honor. There has been a resurgence in popular interest in Tesla since the 1990s....LESS
PALO ALTO, Calif. (AP) — Electric car maker Tesla Inc. says it delivered a record 25,000 vehicles in the first quarter, up 69 percent from the same period last year. Tesla said Sunday that it delivered about 13,450 Model S cars and about 11,550 Model X SUVs.