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Adenauer, Konrad

(Encyclopedia)Adenauer, Konrad kônˈrät äˈdənouˌər [key], 1876–1967, West German chancellor. A lawyer and a member of the Catholic Center party, he was lord mayor of Cologne and a member of the provincial ...

nitrogen cycle

(Encyclopedia)CE5 Nitrogen cycle nitrogen cycle, the continuous flow of nitrogen through the biosphere by the processes of nitrogen fixation, ammonification (decay), nitrification, and denitrification. Nitrogen...

Curtis, Edward Sheriff

(Encyclopedia)Curtis, Edward Sheriff, 1868–1952, American photographer and pioneer ethnographer known for his documentation of Native Americans, b. near Whitewater, Wis. Curtis was obsessed with photography from ...

Srebrenica

(Encyclopedia)Srebrenica srĕbrĕnētˈsä [key], town, E central Bosnia, Bosnia and Herzegovina, in the Serb Republic of Bosnia Herzegovina. Lead has been mined here and nearby since Roman times, and silver and me...

Oberlin College

(Encyclopedia)Oberlin College, at Oberlin, Ohio; coeducational; opened 1833 as Oberlin Collegiate Institute, became Oberlin College in 1850. It includes a college of arts and sciences and a well-known conservatory ...

methyl

(Encyclopedia)methyl mĕthˈəl [key], CH3, organic free radical or alkyl group derived from methane by the removal of one hydrogen atom. ...

Ross, Betsy

(Encyclopedia)Ross, Betsy, 1752–1836, American seamstress, b. Philadelphia. Her full name was Elizabeth Griscom Ross Ashburn Claypoole. She is known to have made flags during the American Revolution, although the...

Savery, Thomas

(Encyclopedia)Savery, Thomas, c.1650–1715, English engineer. He became a military engineer, rising to the rank of captain by 1702. He spent his free time performing experiments in mechanics, inventing such device...

Kuyper, Abraham

(Encyclopedia)Kuyper, Abraham äˈbrähäm koiˈpər [key], 1837–1920, Dutch political figure and Calvinist theologian. After holding important pastorates, he became interested in politics and engaged in politica...

Rochet, Waldeck

(Encyclopedia)Rochet, Waldeck väldĕkˈ rôshāˈ [key], 1905–83, French political leader. A member of the French Communist party, he was named to its central committee in 1936. He was imprisoned and sent to Alg...