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Auguste Piccard, (born January 28, 1884, Basel, Switzerland—died March 24, 1962, Lausanne), Swiss-born Belgian physicist notable for his exploration of…
Konstantin Tsiolkovsky, in full Konstantin Eduardovich Tsiolkovsky, (born September 5 [September 17, New Style], 1857, Izhevskoye, Russia—died September 19, 1935,…
Eli Whitney, (born December 8, 1765, Westboro, Massachusetts [U.S.]—died January 8, 1825, New Haven, Connecticut, U.S.), American inventor, mechanical engineer,…
Vladimir Zworykin, in full Vladimir Kosma Zworykin, (born July 30, 1889, Murom, Russia—died July 29, 1982, Princeton, New Jersey, U.S.),…
Ahn Cheol-Soo, also called Charles Ahn, (born January 22, 1962, Pusan [Busan], South Korea), physician, educator, politician, and computer entrepreneur…
Lord Rayleigh, in full John William Strutt, 3rd Baron Rayleigh of Terling Place, (born November 12, 1842, Langford Grove, Maldon,…
Gerardus Mercator, original name Gerard De Cremer, or Kremer?, (born March 5, 1512, Rupelmonde, Flanders [now in Belgium]—died December 2,…
George Ellery Hale, (born June 29, 1868, Chicago, Ill., U.S.—died Feb. 21, 1938, Pasadena, Calif.), American astronomer known for his…
Charles Proteus Steinmetz, original name Karl August Rudolf Steinmetz, (born April 9, 1865, Breslau, Prussia—died Oct. 26, 1923, Schenectady, N.Y.,…
Sir Bernard Lovell, in full Sir Alfred Charles Bernard Lovell, (born August 31, 1913, Oldland Common, Gloucestershire, England—died August 6,…