Now many people know about the personality of Nikola Tesla. And then, when the young man had just left his native Serbia and moved to America, no one knew about him, and no one believed in his extravagant ideas. The man was a rather eccentric and even strange person, with his own merits and demerits. But Tesla was able to do what no one else could do before him. He left a mark on history, forever engraving his name in the era of human development. The merits of the great physicist and inventor are simply invaluable, because all those devices that are now used by modern people were invented and implemented by him. On his way to fame and recognition, Nikola faced human greed and betrayal more than once. How many trials did he have to go through before he became a world figure?