At the beginning of the last century, mankind was still in the early stage of the electrical age, and all kinds of limited electrical inventions were operated by the direct current discovered by Edison. However, the direct current at that time was not suitable for long-distance transmission, which led to the weaker electricity received by the appliances farther away from the power station.
Nikola tesla developed alternating current (AC) and its application technology after seeing the disadvantages of great loss in long-distance transmission of DC. At that time, Westinghouse realized long-distance power transmission between cities with Tesla's convenient step-up and step-down AC technology, and beat Edison's General Electric Company to win the power supply right of 1893 Chicago World Expo, and Tesla himself became famous.
In the same year that the Chicago World Expo was held, Tesla expounded the basic principle of wireless communication in his report. 1897, the United States granted Tesla a patent on radio technology, but under the influence of its old enemy Edison, the United States revoked Tesla's patent in 1904 and awarded it to Marconi, who later won the Nobel Prize in Physics in 1909.
1943, the American court deprived Marconi of his radio patent and returned it to Tesla. However, Marconi and Tesla have both passed away.
The rumor that Tesla 1 1 times refused the Nobel Prize is not true. In fact, he is more like an outstanding electrical engineer than a physicist, but it is undeniable that although Tesla did not win the Nobel Prize, the material foundation of human life in the whole 20th century was created by Tesla.