engineer, inventorBorn: 3/17/1849Birthplace: Euclid Township, Ohio After studying mining engineering at the University of Michigan, he worked as a chemist and an iron merchant. He ultimately…
economist, publisherBorn: 12/15/1793Birthplace: Philadelphia, Pa. Having foregone college to get an early start in his father's publishing business, he became a partner by age 24. He educated…
Born: 1915Birthplace: Calcutta, India Catalytic cracking of hydrocarbons with a crystalline zeolite catalyst composite—Plank and Rosinski developed the first commercially useful zeolite catalyst…
Born: 1930 Cataract Surgery. In 1963, Kelman designed the ultrasonic phacoemulsifier, which liquefies cataracts so they can be removed by suction. The pioneering procedure reduced the risk of…
Born: 1865Birthplace: Breslau, Germany System of electrical distribution—Steinmetz developed theories for alternating current making possible the expansion of the electric power industry in the…
Born: 1915Birthplace: Greenville, South Carolina Masers—Townes constructed the maser (microwave amplification by stimulated emission of radiation) and also suggested the laser. Both are used in…
Born: 1901Birthplace: Windsor, Mo. Gyroscopic apparatus—Draper developed a spinning gyroscope, stabilizing U.S. Navy antiaircraft gun-sights which led to an inertial guidance system for launching…
Born: 1920 Videotape recorder—After World War II audio tape recorders were run at very high speeds to record the very high frequency television signals. Ginsburg developed a new machine that ran…
Born: 1863Birthplace: Thompson, Ohio Manufacture of aluminum—Hall discovered the modern electrolytic method of producing aluminum cheaply which enabled the metal to be put into wide commercial use…
Born: 1876Birthplace: Ohio Engine starting devices and ignition system—Kettering invented the first electrical ignition system and the self-starter for automobiles and the first practical engine-…
