Columbia Encyclopedia

(Encyclopedia) Weber, Max vāˈbər [key], 1864–1920, German sociologist, economist, and political scientist. At various times he taught at Berlin, Freiburg, Munich, and Heidelberg. One of Weber's chief interests...

(Encyclopedia) Romagna rōmäˈnyä [key], historic region, N central Italy, bordering on the Adriatic Sea in the east, now included in the regions of Emilia-Romagna, Marche, and Tuscany. Although its boundaries var...

(Encyclopedia) Reinhardt, Max, 1873–1943, Austrian theatrical producer and director, originally named Max Goldmann. After acting under Otto Brahm at the Deutsches Theater in Berlin, he managed (1902–5) his own t...

(Encyclopedia) Wright brothers, American airplane inventors and aviation pioneers. Orville Wright 1871–1948, was born in Dayton, Ohio, and Wilbur Wright, 1867–1912, near New Castle, Ind. Their interest in aviati...

(Encyclopedia) protactinium prōˌtăktĭnˈēəm [key], radioactive chemical element; symbol Pa; at. no. 91; mass number of most stable isotope 231; m.p. greater than 1,600℃; b.p. 4,026℃; sp. gr. 15.37 (calcula...

(Encyclopedia) rhenium rēˈnēəm [key], metallic chemical element; symbol Re; at. no. 75; at. wt. 186.207; m.p. about 3,180℃; b.p. about 5,625℃; sp. gr. 21.02 at 20℃; valence −1, +2, +3, +4, +5, +6, or +7....

(Encyclopedia) vacuum, theoretically, space without matter in it. A perfect vacuum has never been obtained; the best human-generated vacuums contain less than 100,000 gas molecules per cc, compared to about 30 billi...

(Encyclopedia) Magyars mŏdˈyärz, măgˈyärz [key], the dominant people of Hungary, but also living in Romania, Ukraine, Slovakia, and Serbia. Although in the past it was thought a common origin existed among the...

(Encyclopedia) William I, 1797–1888, emperor of Germany (1871–88) and king of Prussia (1861–88), second son of the future King Frederick William III of Prussia and Louise of Mecklenburg. Essentially conservati...

(Encyclopedia) John, 1167–1216, king of England (1199–1216), son of Henry II and Eleanor of Aquitaine. John, though often cruel and treacherous, was an excellent administrator, much concerned with rendering...