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tin

(Encyclopedia)tin, metallic chemical element; symbol Sn [Lat. stannum]; at. no. 50; at. wt. 118.710; m.p. 231.9681℃; b.p. 2,270℃; sp. gr. 5.75 (gray), 7.3 (white); valence +2 or +4. Tin exhibits allotropy; abov...

screen

(Encyclopedia)screen, in architecture, partition or enclosure not extending to the ceiling; usually a structure in stone, wood, or metal. It frequently serves to mark the boundaries of portions of churches and cath...

Neutra, Richard Joseph

(Encyclopedia)Neutra, Richard Joseph noiˈtrə, no͞oˈtrə [key], 1892–1970, American architect, born and educated in Vienna. Although Neutra worked for a time with Eric Mendelsohn and later with Frank Lloyd Wri...

notochord

(Encyclopedia)notochord nōˈtəkôrdˌ [key], in biology, supporting rod running most of the length of animals of the phylum Chordata and present at varying times in the life cycle. Composed of large cells packed ...

Noyes, Alfred

(Encyclopedia)Noyes, Alfred noiz [key], 1880–1958, English poet, best known for his poems “The Highwayman” and “The Barrel-Organ.” His first volume of verse, Loom of Years, appeared in 1902. It was follow...

Lucknow

(Encyclopedia)Lucknow or Lakhnau both: lŭkˈnou [key], city (1991 pop. 1,669,204), capital of Uttar Pradesh state, N central India, on the Gomati River. An educational and cultural center, it has varied industries...

naked mole rat

(Encyclopedia)naked mole rat, name applied to a species (Heterocephalus glaber) of small rodents found in E Africa, whose members—the only hairless rodents—live entirely in underground communities of 80 or more...

Kroto, Harry

(Encyclopedia)Kroto, Harry (Sir Harold Walter Kroto), 1939–2016, British chemist, b. Harold Walter Krotoschiner, Ph.D. Univ. of Sheffield, 1964. Kroto was the son of German parents who fled Nazi rule to England. ...

Rhodesia and Nyasaland, Federation of

(Encyclopedia)Rhodesia and Nyasaland, Federation of, SE Africa, 1953–63, composed of the self-governing British colony of Southern Rhodesia and the British protectorates of Northern Rhodesia and Nyasaland. The ca...

rococo, in music

(Encyclopedia)rococo, in music, 18th-century reaction against the baroque style. Less formal and grandiose in structure, it was a graceful rather than a profound style, more hedonistic than venturesome. Extreme man...