Nikola Tesla (1856–1943) was a Serbian-American inventor, electrical engineer, and futurist who pioneered the modern alternating current (AC) electricity supply system. Known for his visionary work in electromagnetism, he invented the induction motor, the Tesla coil, and laid the groundwork for radio and wireless technology. 

Key Aspects of Nikola Tesla:

Key Inventions & Contributions: Tesla is best known for developing the polyphase AC power system, which enabled efficient, long-distance electricity transmission. His inventions also include the Tesla coil (1891), fluorescent lighting, remote control, and early, pioneering work on wireless communication and energy transfer.

Background: Born in Smiljan, Austrian Empire (now Croatia) to Serbian parents, he was a bright student with a photographic memory who pursued engineering, despite his father’s wishes for him to join the priesthood.

Nationality: He was a Serbian-American, having moved to the U.S. in 1884, where he worked briefly for Thomas Edison before setting up his own labs.

Personality and Legacy: Often described as a solitary, visionary genius, Tesla worked on many inventions but struggled financially, dying in relative obscurity on January 7, 1943, in New York City. He was often in competition with other inventors, most famously Thomas Edison, during the "War of the Currents".

Cause of Death: Tesla died of coronary thrombosis at age 86 in his room at the Hotel New Yorker. 

His work in high-frequency electric currents and rotating magnetic fields still powers modern technology