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Edwin H. Armstrong, in full Edwin Howard Armstrong, (born December 18, 1890, New York, New York, U.S.—died January 31/February 1,…
Henry Bessemer, in full Sir Henry Bessemer, (born January 19, 1813, Charlton, Hertfordshire, England—died March 15, 1898, London), inventor and…
Reginald Aubrey Fessenden, (born October 6, 1866, Milton, Canada East [now Quebec], Canada—died July 22, 1932, Hamilton, Bermuda), Canadian radio …
Henry Bessemer, in full Sir Henry Bessemer, (born January 19, 1813, Charlton, Hertfordshire, England—died March 15, 1898, London), inventor and…
Sir John Herschel, 1st Baronet, in full Sir John Frederick William Herschel, 1st Baronet, (born March 7, 1792, Slough, Buckinghamshire,…
Robert Goddard, in full Robert Hutchings Goddard, (born October 5, 1882, Worcester, Massachusetts, U.S.—died August 10, 1945, Baltimore, Maryland), American…
René Laënnec, in full René-Théophile-Hyacinthe Laënnec, (born February 17, 1781, Quimper, Brittany, France—died August 13, 1826, Kerlouanec), French physician who…
William Hyde Wollaston, (born August 6, 1766, East Dereham, Norfolk, England—died December 22, 1828, London), British scientist who enhanced the…
Georgius Agricola, (Latin), German Georg Bauer, (born March 24, 1494, Glauchau, Saxony [Germany]—died November 21, 1555, Chemnitz), German scholar and…
Lee de Forest, (born August 26, 1873, Council Bluffs, Iowa, U.S.—died June 30, 1961, Hollywood, California), American inventor of the …