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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....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...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...Beck, Aaron Tempkin
(Encyclopedia) Beck, Aaron Tempkin, 1921-2021, American psychiatrist, b. Providence, R.I., Brown Univ. (B.A., 1942), Yale Univ. (M.D., 1946). Following earning his me...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...Bailey, F. Lee
(Encyclopedia) Bailey, F. Lee (Francis Lee Bailey), 1933-2021, American lawyer, b. Waltham, Ma., Boston Univ. Law School (J.D., 1960). Bailey attended Harvard for two...Oran
(Encyclopedia)Oran ôräNˈ [key], city (1998 pop. 692,516), capital of Oran prov., NW Algeria, a port on the Gulf of Oran of the Mediterranean Sea. One of the country's leading ports, it ships wheat, wine, alcohol...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...photoelectric effect
(Encyclopedia)photoelectric effect, emission of electrons by substances, especially metals, when light falls on their surfaces. The effect was discovered by H. R. Hertz in 1887. The failure of the classical theory ...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...Browse by Subject
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