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Nikola Tesla
Nikola Tesla, born in the Austrian Empire in what is now Croatia, emigrated to the United States in 1884 and became a pioneering electrical engineer whose work on alternating current (AC) electrical systems proved foundational to how electricity is generated and distributed worldwide today. Tesla's rivalry with Thomas Edison during the late-19th-century "War of the Currents," pitting Tesla's AC electrical system against Edison's competing direct current (DC) system, ultimately ended with AC becoming the dominant standard for long-distance electrical power transmission. Tesla held patents on the induction motor and numerous other electrical innovations, and though he died in relative financial hardship in 1943, his scientific contributions gained substantially greater posthumous recognition in the decades since, including the naming of the SI unit of magnetic flux density in his honor. Nikola Tesla's combination of his foundational work on alternating current power systems and his high-profile rivalry with Thomas Edison has made him one of the most historically significant inventors in the history of electrical engineering.
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Thomas Edison
Thomas Edison built his reputation as one of history's most prolific inventors, holding 1,093 U.S. patents by the time of his death, and he established one of the first organized industrial research laboratories at Menlo Park, New Jersey in 1876, a model that later became standard practice for corporate innovation. Edison developed the first commercially practical incandescent light bulb in 1879, and while he did not invent the concept of electric lighting from scratch, his work solving the practical engineering challenges of a long-lasting, affordable filament made large-scale electric lighting commercially viable for the first time. Edison also developed the phonograph in 1877, the first device capable of both recording and reproducing sound, and his company later played a significant role in the early motion picture industry, giving Edison a role in founding both the recorded music and film industries. Thomas Edison's combination of his pioneering industrial research laboratory model and his practical breakthroughs in electric lighting and sound recording has made him one of the most consequential inventors in modern history.
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