Nicholas Tra's main invention?

"The scientific community generally believes that Leonardo da Vinci and nikola tesla are two prodigies in human history." In the United States, Tesla's reputation in history or popular culture can rival that of any other inventor or scientist. After he demonstrated wireless communication in 1893 and became the winner of the current war, he became one of the greatest electronic engineers in the United States and was highly respected. Many of his early achievements became pioneers of modern electronic engineering, and many of his discoveries were groundbreaking and important. In A.D. 1943, the United States Supreme Court recognized him as the inventor of radio. In the modern world where electricity is used, Tesla's legacy can be seen everywhere.

In addition to its achievements in electromagnetism and engineering, Tesla is also considered to have made contributions in robotics, ballistics, information science, nuclear physics and theoretical physics. Tesla was regarded as a mad scientist in his later years, and attracted attention because he claimed that he could create weird scientific inventions. Many of his achievements are applied with some controversies to support many pseudosciences, such as UFO theory and mysterious theory in the new century. Contemporary admirers of Tesla regarded him as "the man who created the twentieth century". He is a great man forgotten by the world. He invented the alternator, and Edison loved the DC generator he invented and tried his best to suppress Tesla. Tesla would be the richest man in the world if it hadn't been forced to give up the patent for free use of alternating current ($2.53 per horsepower). His dream is to provide inexhaustible energy for the world. Tesla never cared about his financial situation and died of poverty and forgetfulness at the age of 86. Although he is a peerless genius, unfortunately not many people remember him. (asking the hall)