Nikola Tesla (1856–1943) was a Serbian-American inventor, electrical engineer, mechanical engineer, and futurist best known for his contributions to the development of alternating current (AC) electricity.

Born in Smiljan, in the Austrian Empire (modern-day Croatia), Tesla was a visionary whose innovations laid the foundation for many modern technologies.

Induction Motor and Rotating Magnetic Field – These discoveries revolutionized electrical engineering and industry. Wireless Energy Transmission – Tesla envisioned a world powered wirelessly, exemplified by his ambitious but unfinished Wardenclyffe Tower project.

Today, Tesla is celebrated as one of history’s greatest inventors, with his name immortalized in the Tesla, Inc. car company, the SI unit of magnetic flux density (the tesla), and various monuments and events worldwide.

Tesla's most significant achievements include: Alternating Current (AC) System – He developed and promoted AC power, which became the global standard for electricity transmission. His work was crucial in the "War of Currents" against Thomas Edison’s direct current (DC) system. Tesla Coil – A high-voltage transformer still used today in radio transmission and wireless energy experiments.

Radio and Wireless Communication – Although Guglielmo Marconi is often credited with inventing radio, Tesla's patents and experiments in wireless energy transmission preceded Marconi’s work.