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thermodynamics

(Encyclopedia)thermodynamics, branch of science concerned with the nature of heat and its conversion to mechanical, electric, and chemical energy. Historically, it grew out of efforts to construct more efficient he...

Schacht, Hjalmar Horace Greeley

(Encyclopedia)Schacht, Hjalmar Horace Greeley yälˈmär shäkht [key], 1877–1970, German financier. He held executive positions in several major German banks before becoming (1923) commissioner of currency. Infl...

vortex

(Encyclopedia)vortex vôrˈtĕks [key], mass of fluid in whirling or rotary motion. To simplify the analysis, vortex motion usually describes motions in a frictionless fluid. In such cases the absence of friction w...

Fichte, Johann Gottlieb

(Encyclopedia)Fichte, Johann Gottlieb yōˈhän gôtˈlēp fĭkhˈtə [key], 1762–1814, German philosopher. After studying theology at Jena and working as a tutor in Zürich and Leipzig, he became interested in K...

Himmler, Heinrich

(Encyclopedia)Himmler, Heinrich hīnˈrĭkh hĭmˈlər [key], 1900–1945, German Nazi leader. An early member of the National Socialist German Workers' (Nazi) party, Himmler took part in Adolf Hitler's “beer-hal...

von Braun, Wernher

(Encyclopedia)von Braun, Wernher vôn broun [key], 1912–77, German-American rocket scientist and astronautics engineer, b. Germany, grad. Berlin Technological Institute (B.S., 1932), Univ. of Berlin (Ph.D., 1934)...

memory, in psychology

(Encyclopedia)memory, in psychology, the storing of learned information, and the ability to recall that which has been stored. It has been hypothesized that three processes occur in remembering: perception and regi...

chemistry

(Encyclopedia)chemistry, branch of science concerned with the properties, composition, and structure of substances and the changes they undergo when they combine or react under specified conditions. Organic chemi...

Pietism

(Encyclopedia)Pietism pīˈətĭzəm [key], a movement in the Lutheran Church (see Lutheranism), most influential between the latter part of the 17th cent. and the middle of the 18th. It was an effort to stir the c...

Salzburg Festival

(Encyclopedia)Salzburg Festival, annual festival of music and drama held in Salzburg, Austria, for five weeks starting in late July. The festival may be considered a descendant of the Salzburg Music Festival Weeks ...