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Constable, John

(Encyclopedia)Constable, John, 1776–1837, English painter, b. Suffolk. Constable and Turner were the leading figures in English landscape painting of the 19th cent. Constable became famous for his landscapes of S...

Great Rift Valley

(Encyclopedia)Great Rift Valley, geological fault system of SW Asia and E Africa. It extends c.3,000 mi (4,830 km) from N Syria to central Mozambique. The northernmost extension runs S through Syria and Lebanon, th...

Turner, Frederick Jackson

(Encyclopedia)Turner, Frederick Jackson, 1861–1932, American historian, b. Portage, Wis. He taught at the Univ. of Wisconsin from 1885 to 1910 except for a year spent in graduate study at Johns Hopkins. From 1910...

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...

Meuse, river, France, Belgium, and the Netherlands

(Encyclopedia)Meuse myo͞oz, Fr. möz [key], Du. Maas, river, c.560 mi (900 km) long, rising in the Langres Plateau, NE France and flowing N past Sedan (the head of navigation) and Charleville-Mézières into S Bel...

Sacks, Oliver Wolf

(Encyclopedia)Sacks, Oliver Wolf, 1933–2015, British neurologist and author, b. London, educated at Queen's College, Oxford. In 1960 he moved to the United States, where he continued his medical training. He bega...

Della Robbia

(Encyclopedia)Della Robbia dĕlˌə rŏbˈēə, Ital. dĕlˈlä rôbˈbyä [key], Florentine family of sculptors and ceramists famous for their enameled terra-cotta or faience. Many of the Della Robbia pieces are s...