Born: 1873Birthplace: Hudson, Mass. Vacuum tube—Coolidge invented ductile tungsten, the filament material still used in incandescent lamps. He also invented the “Coolidge tube”, the model upon…
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…
(Encyclopedia) Oppenheimer, J. RobertOppenheimer, J. Robertŏpˈənhīˌmər [key], 1904–67, American physicist, b. New York City, grad. Harvard (B.A., 1925), Ph.D. Univ. of Göttingen, 1927. He taught at…
(Encyclopedia) Fairbanks, Douglas, 1883–1939, American movie actor, b. Denver. From 1901 to 1914, Fairbanks appeared on stage in light comedies. In 1915 he began making movies, becoming the…
VANCE, Joseph, a Representative from Ohio; born in Catfish (now Washington), Washington County, Pa., March 21, 1786; moved with his father to Vanceburg, Ky., in 1788 and to Urbana, Ohio, in…
Senate Years of Service: 1959-1977Party: DemocratHARTKE, Rupert Vance, a Senator from Indiana; born in Stendal, Pike County, Ind., May 31, 1919; attended the public schools of Stendal;…
(Henry John Heinz)food manufacturerBorn: 1844Birthplace: Pittsburgh, Pa. He began his career in the food and condiments business selling garden vegetables to neighbors, and moved up to selling to…
housing developerBorn: 2/11/1907Birthplace: New York City Levitt formed a construction company in 1929 with his brother, who focused on the architectural details, and his father, who managed the…
(Joseph Russell Smith) economist, scholar, geographerBorn: 1874Birthplace: near Lincoln, Va. Having studied and taught economics at the University of Pennsylvania and its Wharton School of…
