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cobalt, chemical element

(Encyclopedia)cobalt, metallic chemical element; symbol Co; at. no. 27; at. wt. 58.9332; m.p. 1,495℃; b.p. about 2,870℃; sp. gr. 8.9 at 20℃; valence +2 or +3. Cobalt is a silver-white, lustrous, hard, brittle...

Wilkes, John

(Encyclopedia)Wilkes, John, 1727–97, English politician and journalist. He studied at the Univ. of Leiden, returned to England in 1746, and purchased (1757) a seat in Parliament. Backed by Earl Temple, Wilkes fou...

Stuart, James Francis Edward

(Encyclopedia)Stuart or Stewart, James Francis Edward, 1688–1766, claimant to the British throne, son of James II and Mary of Modena; called the Old Pretender. His birth, falsely rumored by Whigs at the time to b...

Salic law, rule of succession

(Encyclopedia)Salic law sāˈlĭk [key], rule of succession in certain royal and noble families of Europe, forbidding females and those descended in the female line to succeed to the titles or offices in the family...

Leipzig

(Encyclopedia)Leipzig līpˈtsĭkh [key], city (1994 pop. 490,850), Saxony, E central Germany, at the confluence of the Pleisse, White Elster, and Parthe rivers. Originally a Slavic settlement called Lipsk, Leipz...

Elizabeth II, queen of Great Britain and Northern Ireland

(Encyclopedia)Elizabeth II, 1926–2022, former queen of Great Britain and Northern Ireland (1952–2022), elder daughter and successor of George VI, and Britain's lo...

Kierkegaard, Søren Aabye

(Encyclopedia)Kierkegaard, Søren Aabye söˈrən ôbˈü kyĕrˈkəgôr [key], 1813–55, Danish philosopher and religious thinker. Kierkegaard's outwardly uneventful life in Copenhagen contrasted with his intensi...

Fox, Charles James

(Encyclopedia)Fox, Charles James, 1749–1806, British statesman and orator, for many years the outstanding parliamentary proponent of liberal reform. He entered Parliament in 1768 and served as lord of the admiral...

superconductivity

(Encyclopedia)superconductivity, abnormally high electrical conductivity of certain substances. The phenomenon was discovered in 1911 by Heike Kamerlingh Onnes, who found that the resistance of mercury dropped sudd...

Pitt, William, 1759–1806, British statesman

(Encyclopedia)Pitt, William, 1759–1806, British statesman; 2d son of William Pitt, 1st earl of Chatham. Trained as a lawyer, he entered Parliament in 1781 and in 1782 at the age of 23 became chancellor of the exc...