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San Francisco–Oakland Bay Bridge

(Encyclopedia)San Francisco–Oakland Bay Bridge, double-decked structure, W Calif.; built 1933–36 and (eastern section replacement) 2002–13. It has a total length of 8.25 mi (13.2 km). From San Francisco it cr...

rhyolite

(Encyclopedia)rhyolite, fine-grained light-colored acidic volcanic rock. Rhyolite is chemically the equivalent of granite, and is thus composed primarily of quartz and orthoclase feldspar with subordinate amounts o...

shape memory

(Encyclopedia)shape memory, property possessed by certain alloys that allows them to return, when heated, to their original shape after having been deformed. This effect results because, as the alloy is deformed, i...

ablaut

(Encyclopedia)ablaut äpˈlout [key] [Ger.,=off-sound], in inflection, vowel variation (as in English sing, sang, sung, song) caused by former differences in syllabic accent. In a prehistoric period the correspondi...

prose

(Encyclopedia)prose [Lat. prosa oratio=straightforward, or direct, speech], meaningful and grammatical written or spoken language that does not utilize the metrical structure, word transposition, or rhyme character...

hotbed

(Encyclopedia)hotbed, low, glass-covered frame structure for starting tender plants. It differs from a cold frame only in that the soil is heated—either artificially as by underground electric wiring or steampipe...

Kendrew, John Cowdery

(Encyclopedia)Kendrew, John Cowdery, 1917–97, British biochemist, grad. Cambridge (Ph.D. 1949). He was a fellow of Peterhouse College at Cambridge from 1947 to 1975 and was scientific adviser to the British minis...

Stigler, George Joseph

(Encyclopedia)Stigler, George Joseph, 1911–91, American economist, b. Renton, Wash., Ph.D. Univ. of Chicago, 1938. A professor at Univ. of Chicago from 1958, Stigler wrote about the economics of information. He e...

Wells

(Encyclopedia)Wells, town (1991 pop. 9,252), Somerset, SW England. Primarily a cathedral town, it has changed little since medieval times, although shopping and tourism have become important. The first church was e...

Centennial Exhibition, International

(Encyclopedia)Centennial Exhibition, International, held in Philadelphia from May to Nov., 1876, to celebrate the 100th anniversary of the Declaration of Independence. The buildings, in Fairmount Park, included the...