The book of B.N. Rzhonsnitsky is the first biography of a wonderful scientist published in our country, one of the largest electrical engineers, the great son of the Yugoslav people, Nikola Tesla. Serb by nationality, a native of Croatia, Nikola Tesla remained the faithful son of Yugoslavia until the end of his days, although his entire creative life took place in the USA, Nedelok was the path of an inquisitive young man, forced to leave their homeland with its patriarchal structure and move to the country of highly developed capitalism. Early he knew the morals of the capitalist world, and early they left their mark on all his creativity. Until the end of his days, Tesla retained the noble desire to facilitate the work of ordinary people. He devoted his whole life to this. The life of this man was as unusual as the fate of his discoveries. He made more than 800 inventions and predetermined hundreds of important discoveries. It is difficult to list Tesla's merits to science. He created the world's first multiphase AC electric motor, a high-frequency transformer, his signal transmission system using electromagnetic waves, built the first radio-controlled ship and much, much more.