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Crookes, Sir William

(Encyclopedia)Crookes, Sir William, 1832–1919, English chemist and physicist. After serving at the Radcliffe Observatory, Oxford, and teaching chemistry at Chester Training College, he retired to work in his own ...

Cormack, Allan MacLeod

(Encyclopedia)Cormack, Allan MacLeod məkloudˈ, côrˈmək [key], 1924–98, American physicist, b. Johannesburg, South Africa. After studying at the Univ. of Cape Town (B.S. physics, 1944, M.S. crystallography, 1...

Poisson, Siméon Denis

(Encyclopedia)Poisson, Siméon Denis sēmāôNˈ dənēˈ pwäsôNˈ [key], 1781–1840, French mathematician and physicist. From 1802 he taught at the École polytechnique, Paris, and was also on the faculty of sc...

Pickering, William Henry

(Encyclopedia)Pickering, William Henry, 1858–1938, American astronomer, b. Boston, grad. Massachusetts Institute of Technology (B.S., 1879). He taught at the Massachusetts Institute of Technology (1880–87) and ...

Ripley, Robert LeRoy

(Encyclopedia)Ripley, Robert LeRoy, 1890–1949, American cartoonist, b. Santa Rosa, Calif., as Leroy Robert Ripley. The creator of the Believe It or Not! newspaper cartoon, Ripley began his career at 16 as a sport...

Bourne, Randolph Silliman

(Encyclopedia)Bourne, Randolph Silliman bôrn [key], 1886–1918, American author and social critic, b. Bloomfield, N.J., grad. Columbia Univ., 1912. His critical examination of the American way of life established...

Bayard, James Asheton, 1767–1815, U.S. Representative and Senator from Delaware

(Encyclopedia)Bayard, James Asheton bīˈərd [key], 1767–1815, U.S. representative (1797–1803) and senator (1805–13) from Delaware, b. Philadelphia. Admitted to the bar in 1787, he began practice at Wilmingt...

Adams, John Couch

(Encyclopedia)Adams, John Couch, 1819–92, English astronomer, grad. St. John's College, Cambridge, 1843. By mathematical calculation based on irregularities in the motion of Uranus, he predicted the position of t...

Stilwell, Joseph Warren

(Encyclopedia)Stilwell, Joseph Warren, 1883–1946, American general, b. Palatka, Fla. Commissioned in the army in 1904, he fought in World War I and later served for 13 years in China. In Feb., 1942, during World ...

Cannon, Annie Jump

(Encyclopedia)Cannon, Annie Jump, 1863–1941, American astronomer, b. Dover, Del. In 1897 she became an assistant in the Harvard College Observatory, where (1911–38) she was astronomer and curator of astronomica...