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planetarium

(Encyclopedia)planetarium, optical device used to project a representation of the heavens onto a domed ceiling; the term also designates the building that houses such a device. A modern planetarium consists of as m...

psychotherapy

(Encyclopedia)psychotherapy, treatment of mental and emotional disorders using psychological methods. Psychotherapy, thus, does not include physiological interventions, such as drug therapy or electroconvulsive the...

Baden, former state, Germany

(Encyclopedia)Baden bäˈdən [key], former state, SW Germany. Karlsruhe was the capital. Stretching from the Main River in the northeast across the lower Neckar valley and along the right bank of the Rhine to Lake...

meson

(Encyclopedia)meson mēˈzŏn [key] [Gr.,=middle (i.e., middleweight)], class of elementary particles whose masses are generally between those of the lepton class of lighter particles and those of the baryon class ...

Watertown

(Encyclopedia)Watertown. 1 Town (1990 pop. 20,456), Litchfield co., W Conn.; set off from Waterbury and inc. 1780. Textiles, plastics, chemicals, mattresses, and brass goods are among its manufactures. A method for...

Heine, Heinrich

(Encyclopedia)Heine, Heinrich hīnˈrĭkh hīˈnə [key], 1797–1856, German poet, b. Düsseldorf, of a Jewish family. One of the greatest of German lyric poets, he had a varied career. After failing in business h...

Dia Art Foundation

(Encyclopedia)Dia Art Foundation, American foundation that supports contemporary art and artists, est. 1974 by art dealer Heiner Friedrich and his wife, art patron Philippa de Menil. The foundation, which commissio...

Popper, Sir Karl Raimund

(Encyclopedia)Popper, Sir Karl Raimund, 1902–94, Anglo-Austrian philosopher, b. Vienna. He became familiar with the Vienna circle of logical positivists (see logical positivism) while a student at the Univ. of Vi...

minimalism

(Encyclopedia)minimalism, schools of contemporary art and music, with their origins in the 1960s, that have emphasized simplicity and objectivity. In music, the minimalist movement was, like minimal art, a react...

condensate

(Encyclopedia)condensate, matter in the form of a gas of atoms, molecules, or elementary particles that have been so chilled that their motion is virtually halted and as a consequence they lose their separate ident...