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Bürgi, Joost

(Encyclopedia)Bürgi, Joost or Jost, 1552–1632, Swiss mathematician and instrument maker. As the official clockmaker (1579–92) to Duke Wilhelm IV of Hesse-Kassell, he developed the first clock with a minute han...

Lyra

(Encyclopedia)Lyra līˈrə [key] [Lat.,=the lyre], northern constellation lying S of Draco, E of Hercules, and W of Cygnus. Although many civilizations represented it as a bird, it was also depicted as a tortoise....

Devrient, Ludwig

(Encyclopedia)Devrient, Ludwig lo͝otˈvĭkh dəvrēăNˈ [key], 1784–1832, German actor. He abandoned a commercial career in 1804 to join a traveling theatrical company. In Berlin he was a favorite in comedy and...

Nelson, Leonard

(Encyclopedia)Nelson, Leonard, 1882–1927, German philosopher. On the faculty of the Univ. of Göttingen from 1909, he was interested in the use of critical method to establish a scientific foundation for philosop...

Schomberg, Frederick Herman, 1st duke of

(Encyclopedia)Schomberg, Frederick Herman, 1st duke of schŏmˈbərg [key], Ger. Friedrich Hermann von Schönberg, 1615–90, German soldier of fortune. After serving on the Protestant side in the Thirty Years War,...

Selten, Reinhard

(Encyclopedia)Selten, Reinhard (Reinhard Justus Reginald Selten), 1930–2016, German mathematician and economist, b. Breslau, Germany (now Wrocław, Poland), Ph.D. Johann-Wolfgang-Goethe-Univ., Frankfurt, 1961. He...

dialectic

(Encyclopedia)dialectic dīəlĕkˈtĭk [key] [Gr.,= art of conversation], in philosophy, term originally applied to the method of philosophizing by means of question and answer employed by certain ancient philosop...

child welfare

(Encyclopedia)child welfare, services provided for the care of disadvantaged children. Foundling institutions for orphans and abandoned children were the earliest attempts at child care, usually under religious aus...

Bustamante, Sir Alexander

(Encyclopedia)Bustamante, Sir Alexander bŭsˌtəmănˈtē [key], 1884–1977, prime minister of Jamaica (1962–67). Born William Alexander Clarke, the son of an Irish father and a Jamaican mother, he was adopted...

perestroika

(Encyclopedia)perestroika pərˈĕstroyˈkə [key], Soviet economic and social policy of the late 1980s. Perestroika [restructuring] was the term attached to the attempts (1985–91) by Mikhail Gorbachev to transfo...