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Welles, Gideon

(Encyclopedia)Welles, Gideon wĕlz [key], 1802–78, American statesman, b. Glastonbury, Conn. He was (1826–36) editor and part owner of the Hartford Times, one of the first New England papers to support Andrew J...

Seaborg, Glenn Theodore

(Encyclopedia)Seaborg, Glenn Theodore sēˈbôrg [key], 1912–99, American chemist, b. Ishpeming, Mich., grad. Univ. of California at Los Angeles, 1934, Ph.D. Univ. of California at Berkeley, 1937. In 1939, he beg...

London Company

(Encyclopedia)London Company, corporation composed of stockholders residing in and about London, which, together with the Plymouth Company (see Virginia Company), was granted (1606) a charter by King James I to fou...

plutonium

(Encyclopedia)plutonium plo͞otōˈnēəm [key], radioactive chemical element; symbol Pu; at. no. 94; mass no. of most stable isotope 244; m.p. 641℃; b.p. 3,232℃; sp. gr. 19.84 at 20℃; valence +3, +4, +5, or ...

aviation

(Encyclopedia)aviation, operation of heavier-than-air aircraft and related activities. Aviation can be conveniently divided into military aviation, air transport, and general aviation. Military aviation includes al...

photographic processing

(Encyclopedia)photographic processing, set of procedures by which the latent, or invisible, image produced when a photographic film is exposed to light is made into a permanent visible image. The negative may b...

Hubble's law

(Encyclopedia)Hubble's law, in astronomy, statement that the distances between galaxies (see galaxy) or clusters of galaxies are continuously increasing and that therefore the universe is expanding. Hubble's law ...

criminology

(Encyclopedia)criminology, the study of crime, society's response to it, and its prevention, including examination of the environmental, hereditary, or psychological causes of crime, modes of criminal investigation...

Barrymore

(Encyclopedia)Barrymore, Anglo-American family of actors. Lionel and Ethel's younger brother, John Barrymore,John Barrymore, 1882–1942, b. Philadelphia, tried his hand at painting and cartooning before turning ...

band

(Encyclopedia)band, in music, a group of musicians playing principally on wind and percussion instruments, usually outdoors. Prior to the 18th cent., the term band was frequently applied in a generic sense to cover...