Columbia Encyclopedia

Search results

500 results found

X-ray crystallography

(Encyclopedia)X-ray crystallography, the study of crystal structures through X-ray diffraction techniques. When an X-ray beam bombards a crystalline lattice in a given orientation, the beam is scattered in a defini...

Areopagus

(Encyclopedia)Areopagus ărēŏpˈəgəs [key] [Gr.,=hill of Ares], rocky hill, 370 ft (113 m) high, NW of the Acropolis of Athens, famous as the sacred meeting place of the prime council of Athens. This council, a...

Rutledge, John

(Encyclopedia)Rutledge, John, 1739–1800, American jurist and political leader, 2d chief justice of the United States, b. Charleston, S.C.; brother of Edward Rutledge. After studying law in London he began practic...

Rostropovich, Mstislav

(Encyclopedia)Rostropovich, Mstislav mĭsˈtĭslävˌ rŏsˌtrəpôˈvyĭch [key], 1927–2007, Russian cellist, pianist, and conductor. He made his cello debut in 1940 and his conducting debut in 1968, toured with...

Koblenz

(Encyclopedia)Koblenz kōˈblĕnts [key], Eng. Coblenz, city (1994 pop. 109,810), Rhineland-Palatinate, W Germany, at the confluence of the Rhine and the Moselle (Ger. Mosel ) rivers. Its manufactures include fur...

roentgenium

(Encyclopedia)roentgenium, artificially produced radioactive chemical element; symbol Rg; at. no. 111; mass number of most stable isotope 280; m.p., b.p., sp. gr., and valence unknown. Situated in Group 11 of the p...

Tell, William

(Encyclopedia)Tell, William, legendary Swiss patriot. According to legend, Tell was a native of Uri, one of the Swiss forest cantons. Gessler, the canton's Austrian bailiff, decreed that Swiss citizens must remove ...

geopolitics

(Encyclopedia)geopolitics, method of political analysis, popular in Central Europe during the first half of the 20th cent., that emphasized the role played by geography in international relations. Geopolitical theo...

Sturm und Drang

(Encyclopedia)Sturm und Drang shto͝orm o͝ont dräng [key] or Storm and Stress, movement in German literature that flourished from c.1770 to c.1784. It takes its name from a play by F. M. von Klinger, Wirrwarr; od...

yttrium

(Encyclopedia)yttrium ĭtˈrēəm [key] [for Ytterby, a town in Sweden], metallic chemical element; symbol Y; at. no. 39; at. wt. 88.90585; m.p. about 1,522℃; b.p. 3,338℃; sp. gr. about 4.45; valence +3. Yttriu...