Nikola Tesla was a Serbian-American scientist, electrical engineer, and inventor whose research laid the foundation for modern electrical and communications systems. Despite his achievements, little is known about him, who held 700 patents for an impressive range of accomplishments, including alternating current systems, radio, the Tesla induction coil transformer, wireless transmission, and fluorescent lighting. Tesla was born on July 10, 1856 in Smiljan, Croatia. (Some records believe it was July 9 or July 9 or 10) His father was a traditional pastor and writer as well as a poet; his mother was a housewife who invented tools, such as the eggbeater. She invented her inventions, and the income from these inventions was used to supplement daily expenses. As a student, Tesla was able to perform complex calculations so quickly that he was often accused of cheating. He trained as an engineer to attend the Technical University in Graz, Austria, and the University of Prague. Tesla worked with Thomas Edison since they immigrated to the United States in 1884. However, the two scientists did not get along well, and Tesla soon established his own laboratory. From different aspects, he is a genius, a visionary, a philosopher and a weirdo. Tesla will often intuitively doubt some scientific truths and then use scientific methods to prove his hypotheses. Despite his contribution to modern technology, he is little known outside the realm of science. According to Tesla's biographer Margaret Cheney: He is an outdated person, and there are many reasons that led to the inventor's bleak life. First of all, Tesla never has to join any organization. In addition, his research was so advanced that Tesla's contemporaries often failed to understand his work. Yet the main reason many people have never heard of him is that other scientists generally don't have much faith in Tesla's achievements. Tesla's work on alternating current is usually attributed to Thomas Edison, and Marconi is inevitably regarded as the inventor of radio. In fact, Edison never worked on alternating current because he was competing for work on direct current (DC). In addition, although Marconi obtained the patent for radio in 1904, the licensing situation was somewhat dark because Tesla had already obtained the patent for radio in 1900. In 1943, the Supreme Court restored Tesla's status as the inventor of radio and upheld his 1900 patent. Unfortunately, the court's correction came too late for Tesla. Nikola Tesla died in New York City on January 7, 1943. At his funeral, three Nobel Prize winners gave him eulogies (he himself did not receive a Nobel Prize). As one of the world's outstanding intellectuals, he paved the way for the development of many future technologies. Finally, people used Tesla's name as the standard unit of magnetic induction density to commemorate Tesla's achievements.