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Hipparchus, Greek astronomer

(Encyclopedia)Hipparchus, fl. 2d cent. b.c., Greek astronomer, b. Nicaea, Bithynia. He is the first systematic astronomer of whom there are records. He made his observations chiefly on the island of Rhodes. Ptolemy...

Al-Hakam II

(Encyclopedia)Al-Hakam II: see Hakam II, al-.

Chandragupta I and II

(Encyclopedia)Chandragupta I and II, Indian emperors. See Gupta. ...

Hakam II, al-

(Encyclopedia)Hakam II, al- äl-häkämˈ [key], 914–76, Umayyad caliph of Córdoba (961–76), son and successor of Abd ar-Rahman III. In the early part of his reign he successfully waged war against the Christi...

Frederick William II

(Encyclopedia)Frederick William II, 1744–97, king of Prussia (1786–97), nephew and successor of Frederick II (Frederick the Great). He had the power but lacked the ability of his distinguished predecessors. He ...

Gregory II, Saint

(Encyclopedia)Gregory II, Saint, d. 731, pope (715–31), a Roman; successor of Constantine. When Byzantine Emperor Leo III tried to impose iconoclasm in Italy by an imperial edict, Gregory answered that the empero...

Nicholas II, pope

(Encyclopedia)Nicholas II (c.1010–61), pope (1058–61), a Roman named Gerard, b. Lorraine, France; successor to Pope Stephen IX. A strong proponent of papal reform, he issued (1059) the Papal Election Decree in ...

Nicholas II Land

(Encyclopedia)Nicholas II Land: see Severnaya Zemlya, Russia. ...

Bahadur Shah II

(Encyclopedia)Bahadur Shah II bähäˈdo͝or shä [key], 1775–1862, last Mughal emperor of India (1837–57). A political figurehead, he was completely controlled by the British East India Company, who found it c...

population I and II

(Encyclopedia)population I and II, in astronomy: see stellar populations. ...