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Rambouillet, Catherine de Vivonne, marquise de

(Encyclopedia)Rambouillet, Catherine de Vivonne, marquise de kätrēnˈ də vēvônˈ märkēzˈ də räNbo͞oyāˈ [key], 1588–1665, famous Frenchwoman, whose salon exercised a profound influence on French liter...

Tordesillas, Treaty of

(Encyclopedia)Tordesillas, Treaty of tōrˌᵺāsēˈlyäs [key], 1494, agreement signed at Tordesillas, Spain, by which Spain and Portugal divided the non-Christian world into two zones of influence. In principle ...

Coppermine

(Encyclopedia)Coppermine, river, 525 mi (845 km) long, rising in Lac de Gras, Northwest Territories, Canada, and winding northwest to enter the Arctic Ocean at Coronation Gulf in Nunavut Territory. Kugluktuk, forme...

calculus of variations

(Encyclopedia)calculus of variations, branch of mathematics concerned with finding maximum or minimum conditions for a relationship between two or more variables that depends not only on the variables themselves, a...

Alaskan malamute

(Encyclopedia)Alaskan malamute mălˈəmyo͞otˌ [key], breed of strong, compact working dog believed to be one of the oldest arctic sled dogs. It stands about 23 in. (58.2 cm) high at the shoulder and weighs from ...

Noatak National Preserve

(Encyclopedia)Noatak National Preserve, 6,569,904 acres (2,660,811 hectares), N Alaska. The preserve is the largest mountain-ringed river basin in the United States that is still virtually unaffected by human activ...

logical positivism

(Encyclopedia)logical positivism, also known as logical or scientific empiricism, modern school of philosophy that attempted to introduce the methodology and precision of mathematics and the natural sciences into t...

Androuet du Cerceau

(Encyclopedia)Androuet du Cerceau äNdro͞o-āˈ dü sĕrsōˈ [key], family of French architects active in the 16th and 17th cent. It was founded by Jacques Androuet, c.1520–c.1584, surnamed du Cerceau [Fr.,=cir...

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