Electrical engineer, mechanical engineer, and physicist who invented the electrical motor, arc lighting, and AC power. He did high-voltage, high-frequency power experiments in New York which later led to the invention of radio communication.
He was so proficient at doing calculus in his head that his teachers thought he was cheating.
Though his work made him a lot of money, he spent most of it on the experiments themselves and lived much of his life in a series of hotels.
Had a brother named Dane and sisters named Milka, Angelina and Marica.
He worked for Thomas Edison but resigned after Edison refused to pay him the money he promised.