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americium

(Encyclopedia)americium ămərĭˈshēəm [key], artificially produced radioactive chemical element; symbol Am; at. no. 95; mass no. of most stable isotope 243; m.p. about 1,175℃; b.p. about 2,600℃; sp. gr. 13....

Fourier, Charles

(Encyclopedia)Fourier, Charles shärl fo͞oryāˈ [key], 1772–1837, French social philosopher. From a bourgeois family, he condemned existing institutions and evolved a kind of utopian socialism. In Théorie des ...

Hudson River school

(Encyclopedia)Hudson River school, group of American landscape painters, working from 1825 to 1875. The 19th-century romantic movements of England, Germany, and France were introduced to the United States by such w...

Hanover, house of

(Encyclopedia)Hanover, house of, ruling dynasty of Hanover (see Hanover, province), which was descended from the Guelphs and which in 1714 acceded to the British throne in the person of George I. George was the gra...

Schopenhauer, Arthur

(Encyclopedia)Schopenhauer, Arthur ärˈto͝or shōˈpənhouˌər [key], 1788–1860, German philosopher, b. Danzig (now Gdansk). The bias of his own temperament and experience was germinal to the development of hi...

Schumann, Robert Alexander

(Encyclopedia)Schumann, Robert Alexander sho͞oˈmän [key], 1810–56, German composer. Both as a composer and as a highly articulate music critic he was a leader of the romantic movement. He studied theory with H...

dialectical materialism

(Encyclopedia)dialectical materialism, official philosophy of Communism, based on the writings of Karl Marx and Friedrich Engels, as elaborated by G. V. Plekhanov, V. I. Lenin, and Joseph Stalin. In theory dialecti...

Zollverein

(Encyclopedia)Zollverein tsôlˈfərīnˈ [key] [Ger.,=customs union], in German history, a customs union established to eliminate tariff barriers. Friedrich List first popularized the idea of a combination to abol...

Marx, Karl

(Encyclopedia)Marx, Karl, 1818–83, German social philosopher, the chief theorist of modern socialism and communism. In 1847 Marx joined the Communist League and with Engels wrote for it the famous Communist M...

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...