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Teotihuacán
(Encyclopedia)Teotihuacán tāōtēwäkänˈ [key], ancient commercial and religious center in the central valley of Mexico, c.30 mi (48 km) NE of Mexico City. Once thought to be the great religious center of the T...zodiac
(Encyclopedia) CE5 Signs of the zodiac CEE zodiac zōˈdēăk [key] [Gr. zoion=animal], in astronomy, zone of the sky that includes about 8° on either side of the ecliptic. The apparent paths of the sun, the...Ptolemy
(Encyclopedia)Ptolemy (Claudius Ptolemaeus), fl. 2d cent. a.d., celebrated Greco-Egyptian mathematician, astronomer, and geographer. He made his observations in Alexandria and was the last great astronomer of ancie...Chiang Kai-shek
(Encyclopedia)Chiang Kai-shek jyäng kī-shĕk, jyäng [key], 1887–1975, Chinese Nationalist leader. He was also called Chiang Chung-cheng. After completing military training with the Japanese Army, he returned t...Cassini
(Encyclopedia)Cassini käs-sēˈnē [key], name of a family of Italian-French astronomers, four generations of whom were directors of the Paris Observatory. Gian Domenico Cassini, 1625–1712, was born in Italy and...celestial mechanics
(Encyclopedia)celestial mechanics, the study of the motions of astronomical bodies as they move under the influence of their mutual gravitation. Celestial mechanics analyzes the orbital motions of planets, dwarf pl...Alcestis
(Encyclopedia)Alcestis ălsĕsˈtĭs [key], in Greek mythology, daughter of Pelias. She was won in marriage by Admetus, who fulfilled her father's condition that her suitor come for her in a chariot pulled by a wil...Coffin, William Anderson
(Encyclopedia)Coffin, William Anderson, 1855–1925, American landscape and figure painter and art critic, studied at the Yale School of Fine Arts and under Léon Bonnat in Paris. His landscapes were awarded numero...Foucault, Jean Bernard Léon
(Encyclopedia)Foucault, Jean Bernard Léon zhäN bĕrnärˈ lāôNˈ fo͞okōˈ [key], 1819–68, French physicist. Known especially for his research on the speed of light, he determined its velocity in air and fou...Goldberg, Rube
(Encyclopedia)Goldberg, Rube (Reuben Lucius Goldberg), 1883–1970, American cartoonist and sculptor, b. San Francisco. After drawing cartoons for San Francisco newspapers, he moved to New York City. There he worke...Browse by Subject
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