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rotary engine

(Encyclopedia)rotary engine, internal-combustion engine whose cycle is similar to that of a piston engine, but which produces rotary motion directly without any conversion from reciprocating motion. A major problem...

Müller, Wilhelm

(Encyclopedia)Müller, Wilhelm vĭlˈhĕlmˌ mŭlˈər [key], 1794–1827, German lyric poet; father of Max Müller. His Lieder der Griechen (5 vol., 1821–24) was inspired by the Greek struggle for independence. ...

Rethel, Alfred

(Encyclopedia)Rethel, Alfred älˈfrĕt rāˈtəl [key], 1816–59, German historical painter and draftsman. He gained a reputation in Frankfurt, where he painted Daniel in the Lions' Den and Guardian Angel of Empe...

thorium

(Encyclopedia)thorium thôrˈēəm [key] [from Thor], radioactive chemical element; symbol Th; at. no. 90; mass number of most stable isotope 232; m.p. about 1,750℃; b.p. about 4,790℃; sp. gr. 11.7 at 20℃; va...

Abbot, Charles Greeley

(Encyclopedia)Abbot, Charles Greeley, 1872–1973, American astrophysicist, b. Wilton, N.H. He was acting director in 1896 and director in 1907 of the astrophysical observatory of the Smithsonian Institution; he wa...

Janáček, Leoš

(Encyclopedia)Janáček, Leoš lĕˈôsh yäˈnächĕk [key], 1854–1928, Czech composer, theorist, and collector of Slavic folk music. He studied in Prague and Leipzig and founded a music conservatory at Brno in ...

Modigliani, Franco

(Encyclopedia)Modigliani, Franco, 1918–2003, American economist, b. Rome. Jewish, antifascist, and trained as a lawyer, he fled Mussolini's Italy in 1938, settling in the United States in 1939, where he studied e...

Spieghel, Hendrick Laurenszoon

(Encyclopedia)Spieghel, Hendrick Laurenszoon hĕnˈdrək louˈrənszōnˌ spēˈkhəl [key], 1549–1612, Dutch poet. In his cycle of spiritual songs Lieden Op't Vader Ons (modern ed. 1957), he was among the first ...

Aragon, Louis

(Encyclopedia)Aragon, Louis lwē ärägôNˈ [key], 1897–1982, French writer. One of the founders of surrealism in literature, Aragon abandoned that philosophy for Marxism after a trip to the USSR in 1931. He was...

Tacitus, Roman historian

(Encyclopedia)Tacitus (Cornelius Tacitus), c.a.d. 55–c.a.d. 117, Roman historian. Little is known for certain of his life. He was a friend of Pliny the Younger and married the daughter of Agricola. In a.d. 97 he ...