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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...

squaring the circle

(Encyclopedia)squaring the circle: see geometric problems of antiquity. ...

French Southern and Antarctic Lands

(Encyclopedia)French Southern and Antarctic Lands, overseas territory of France, including Adélie Land, which covers c.200,000 sq mi (520,000 sq km) in Antarctica, and a number of islands in the S Indian Ocean. Th...

Bransfield, Edward

(Encyclopedia)Bransfield, Edward, 1795–1852, English sea captain and antarctic explorer. In 1820, Bransfield sailed from Chile to the South Shetland Islands off the N Antarctic Peninsula. After claiming King Geor...

Knights of the Golden Circle

(Encyclopedia)Knights of the Golden Circle, secret order of Southern sympathizers in the North during the Civil War. Its members were known as Copperheads. Dr. George W. L. Bickley, a Virginian who had moved to Ohi...

Ronne, Finn

(Encyclopedia)Ronne, Finn, 1899–1980, Norwegian-American Antarctic explorer. Ronne graduated from college in Norway in 1922 and immigrated to the United States. His first of nine Antarctic expeditions was with Ad...

Antarctica

(Encyclopedia)CE5 Antarctica ăntärkˈtĭkə, –ärˈtĭkə [key], the fifth largest continent, c.5,500,000 sq mi (14,245,000 sq km), asymmetrically centered on the South Pole and almost entirely within the An...

Southern Ocean

(Encyclopedia)Southern Ocean or Antarctic Ocean, name sometimes given to those parts of the Pacific, Atlantic, and Indian oceans that surround Antarctica S of roughly 60°S. These waters are marked by the Antarctic...

Mawson, Sir Douglas

(Encyclopedia)Mawson, Sir Douglas, 1882–1958, Australian antarctic explorer and geologist, b. England. His first geographical expedition was to the New Hebrides Islands as a geologist in 1903. As a member of the ...

Charcot, Jean Baptiste

(Encyclopedia)Charcot, Jean Baptiste zhäN bätēstˈ shärkōˈ [key], 1867–1936, French neurologist and explorer in the antarctic region; son of Jean Martin Charcot. He became (1896) director of clinics at the ...