Tesla (July 10, 1856 – c. January
7, 1943) was an inventor, physicist, mechanical
engineer, and electrical engineer. He
is often regarded as one of the greatest
geniuses of technological progression.
 In addition, Tesla is recognized among
the most innovative engineers of the late
19th century and early 20th century. His
patents and theoretical work form the
basis of modern alternating current electric
power (AC) systems, including the polyphase
power distribution system and AC motor,
with which he helped usher in the Second
Industrial Revolution. Nikola Tesla was
of Serbian descent and a citizen of the
former Yugoslavian state. While conducting
his work in the United States, he became
an naturalized American citizen in 1891.
The surname "Tesla" is a Serbian
word that means adze. In America, Tesla's
fame paralleled that of any other inventor
or scientist in history and in popular
culture. His name became a byword for
innovation and practical achievement.
He was deemed a "magician" who
conjured up technical feats.