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Coriolis effect

(Encyclopedia)Coriolis effect kôrˌē-ōˈlĭs [key] [for G.-G. de Coriolis, a French mathematician], tendency for any moving body on or above the earth's surface, e.g., an ocean current or an artillery round, to ...

circumpolar star

(Encyclopedia)circumpolar star, star whose diurnal circle lies completely above or completely below an observer's horizon. A star whose diurnal circle lies above the horizon never sets, even though it cannot be see...

North Country National Scenic Trail

(Encyclopedia)North Country National Scenic Trail: see National Parks and Monuments (table)national parks and monuments (table). ...

Morris Jesup, Cape

(Encyclopedia)Morris Jesup, Cape jĕsˈəp [key], northernmost land point in the world, N Greenland. At lat. 83°39′N, it is 440 mi (708 km) from the North Pole. U.S. explorer Robert Peary reached the cape in 189...

Nansen, Fridtjof

(Encyclopedia)Nansen, Fridtjof frĭtˈyôf nänˈsən [key], 1861–1930, Norwegian arctic explorer, scientist, statesman, and humanitarian. The diversity of Nansen's interests is shown in his writings, which inclu...

Cook, Frederick Albert

(Encyclopedia)Cook, Frederick Albert, 1865–1940, American explorer and physician, b. Sullivan co., N.Y. Cook early became interested in the arctic and accompanied the expedition of Robert E. Peary in 1891–92 as...

midnight sun

(Encyclopedia)midnight sun, phenomenon in which the sun remains visible in the sky continuously for 24 hr or longer, occurring only in the polar regions. The midnight sun is due to the fact that the plane of the ea...

North American Free Trade Agreement

(Encyclopedia)North American Free Trade Agreement (NAFTA), accord establishing a free-trade zone in North America; it was signed in 1992 by Canada, Mexico, and the United States and took effect on Jan. 1, 1994. NAF...