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Bethmann-Hollweg, Theobald von

(Encyclopedia) Bethmann-Hollweg, Theobald vonBethmann-Hollweg, Theobald vontāˈōbält fən bātˈmän-hôlˈvāk [key], 1856–1921, German chancellor. A career civil servant, he became minister of the interior…

permafrost

(Encyclopedia) permafrost, permanently frozen soil, subsoil, or other deposit, characteristic of arctic and some subarctic regions; similar conditions are also found at very high altitudes in…

Ramus, Petrus

(Encyclopedia) Ramus, PetrusRamus, Petruspēˈtrəs rāˈməs [key], or Pierre de La RaméeRamus, Petruspyĕr də lä rämāˈ [key], 1515–72, French humanist and philosopher. Attempting to break through…

switch

(Encyclopedia) switch, electrical device having two states: on, or closed; and off, or open. Ideally a switch offers a zero impedance to a current when it is closed, and it offers infinite impedance…

David, Jacques-Louis

(Encyclopedia) David, Jacques-LouisDavid, Jacques-Louiszhäk-lwēˈ dävēdˈ [key], 1748–1825, French painter. David was the virtual art dictator of France for a generation. Extending beyond painting, his…

Federal Bureau of Investigation

(Encyclopedia) Federal Bureau of Investigation (FBI), division of the U.S. Dept. of Justice charged with investigating all violations of federal laws except those assigned to some other federal…

states of matter

(Encyclopedia) states of matter, forms of matter differing in several properties because of differences in the motions and forces of the molecules (or atoms, ions, or elementary particles) of which…

Little Entente

(Encyclopedia) Little EntenteLittle Ententeäntäntˈ [key], loose alliance formed in 1920–21 by Czechoslovakia, Romania, and Yugoslavia. Its specific purposes were the containment of Hungarian…

Alfonso III, king of Portugal

(Encyclopedia) Alfonso III, 1210–79, king of Portugal (1248–79), son of Alfonso II, brother and successor of Sancho II. By his marriage with Matilda, countess of Boulogne, he became count of Boulogne…

levee

(Encyclopedia) leveeleveelĕvˈē [key] [Fr.,=raised], embankment built along a river to prevent flooding by high water. Levees are the oldest and the most extensively used method of flood control. They…