The use of electricity plays a key role in the functioning of modern society. Although we know that our ancestors managed quite well without sockets and wires, we ourselves can hardly imagine life without electricity. The widespread use of electricity, without which modern civilization is unthinkable, became possible thanks to the inventions and discoveries of the great Serbian scientist Nikola Tesla (1856-1943). Without his work, the world would not be what it is today. Tesla, who was ahead of his time in many ways, is called the “inventor of the 20th century.” The most significant pioneers in the field of practical use of electricity were Thomas Edison and George Westinghouse. Having proved the fundamental possibility of transporting energy, they were able in practice to deliver current over a distance of a mile, but then the charge was lost. The reason was that the motors developed by that time operated on direct current. Nikola Tesla was the first to realize that with an electric current that changes direction, which in its natural state is always variable, transmitting an electric charge over a distance is much easier (and therefore cheaper). Ultimately, it was Tesla's project that became widespread throughout the world, sending DC generators into history. Power transmission systems made it possible to provide electricity to houses and factories located hundreds of kilometers from the current source. It is not surprising that electricity supply has rapidly spread throughout the planet. Tesla was a genius in many areas of physics. Perhaps he can be called the most versatile inventor of all times. His scope of work with x-rays, vacuum tubes, radiation and cosmic radiation is much wider than the areas of interest of Edison and Marconi, Tesla's main rivals. The engineer's developments in remote control, robotic construction, radar technology and lasers have become a huge contribution to scientific and technological progress. Tesla's latest patent, registered in early 1928, is for a vertical take-off aircraft - another evidence of the breadth of his engineering thinking. Published in 1931, the scientist's work proposes a system for extracting energy by extracting electricity through temperature fluctuations in the waters of the world's oceans. Fascinated by the grandeur of Tesla's scope and research courage, many researchers attributed the most fantastic experiments to his work, ranging from earthquakes to the fall of the Tunguska meteorite.