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Tomonaga, Sinichiro

(Encyclopedia)Tomonaga, Sinichiro or Sin-Itiro, 1906–79, Japanese physicist, Ph.D. Kyoto Imperial Univ., 1939. He was a professor at Bunrika Univ. (now Tokyo Univ. of Education) from 1941 to 1956, then served pre...

Ammianus Marcellinus

(Encyclopedia)Ammianus Marcellinus ămēāˈnəs märsĭlīˈnəs [key], c.330–c.400, Roman historian, b. Antioch. After retiring from a successful military career, he wrote a history of the Roman Empire as a seq...

op art

(Encyclopedia)op art ŏp [key], movement that became prominent in the United States and Europe in the mid-1960s. Deriving from abstract expressionism, op art includes paintings concerned with surface kinetics. Colo...

Valentinian I

(Encyclopedia)Valentinian I vălˌəntĭnˈēən [key], 321–75, Roman emperor of the West (364–75). He held high military rank under Julian and Jovian. After the death of Jovian, Valentinian was proclaimed empe...

Prendergast, Maurice Brazil

(Encyclopedia)Prendergast, Maurice Brazil, 1859–1924, American painter, b. St. John's, N.L., Canada, educated in Boston. In 1886 he worked his way to Europe on a cattle boat and studied in Paris at Julian's and a...

Gödel, Kurt

(Encyclopedia)Gödel, Kurt göˈdəl [key], 1906–78, American mathematician and logician, b. Brünn (now Brno, Czech Republic), grad. Univ. of Vienna (Ph.D., 1930). He came to the United States in 1940 and was na...

Merezhkovsky, Dmitri Sergeyevich

(Encyclopedia)Merezhkovsky, Dmitri Sergeyevich dəmēˈtrē syĭrgāˈyəvĭch mârĭshkôfˈskē [key], 1865–1941, Russian critic and novelist. His principal critical study is Tolstoi as Man and Artist; with an ...

Shapur II

(Encyclopedia)Shapur II or Sapor II, 310–79, king of Persia (310–79), of the Sassanid, or Sassanian, dynasty. He was the posthumous son of Hormuz II and therefore was born king. His long reign was marked by gre...

Castagno, Andrea del

(Encyclopedia)Castagno, Andrea del ändrĕˈä dĕl kästäˈnyō [key], c.1423–1457, major Florentine painter of the early Renaissance. His first recorded painting (1440; now destroyed), effigies of hanged men, ...

Roderick

(Encyclopedia)Roderick rŏdˈərĭk [key], d. 711?, last Visigothic king in Spain (710–711?). After the death of King Witiza, a group of nobles chose Roderick, duke of Baetica, as successor to the king. Having de...