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Hooker, John Lee

(Encyclopedia)Hooker, John Lee, 1917–2001, American blues singer and guitarist, b. near Clarksdale, Miss. From a cotton-sharecropping family, he learned the blues from his stepfather and various visiting Delta bl...

weber, unit of magnetic flux

(Encyclopedia)weber vāˈbər, wē–, wĕbˈər [key] [for W. E. Weber], abbr. Wb, unit of magnetic flux in the mks system of weights and measures; 1 Wb is equal to 1 volt-second. The weber per square meter, calle...

Wuppertal

(Encyclopedia)Wuppertal vo͝opˈərtäl [key], city (1994 pop. 386,625), North Rhine–Westphalia, W Germany, on the Wupper River. It is an industrial center, formed in 1929 by the merger of Barmen, Elberfeld, Vohw...

geriatrics

(Encyclopedia)geriatrics jĕrēăˈtrĭks [key], the branch of medicine concerned with conditions and diseases of the aged. Many disabilities in old age are caused by or related to the deterioration of the circulat...

Down syndrome

(Encyclopedia)Down syndrome, congenital disorder characterized by mild to severe mental retardation, slow physical development, and characteristic physical features. Down syndrome affects about 1 in every 730 live ...

Astraea

(Encyclopedia)Astraea ăstrēˈə [key], in Greek religion and mythology, goddess of justice; daughter of Zeus and Themis. Because of the wickedness of man, she withdrew from the earth at the end of the Golden Age ...

Gaelic literature

(Encyclopedia)Gaelic literature, literature in the native tongue of Ireland and Scotland. Since Scots Gaelic became separate from Irish Gaelic only in the 17th cent., the literature is conventionally divided into O...

electrochemistry

(Encyclopedia)electrochemistry, science dealing with the relationship between electricity and chemical changes. Of principal interest are the reactions that take place between electrodes and the electrolytes in ele...

Eliasson, Olafur

(Encyclopedia)Eliasson, Olafur, 1967–, Danish sculptor, architect, and installation artist. His work is influenced by nature and natural phenomena. Early works involved frozen water droplets, electric fans, and s...

streetcar

(Encyclopedia)streetcar, small, self-propelled railroad car, similar to the type used in rapid-transit systems, that operates on tracks running through city streets and is used to carry passengers. Most often cars ...