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Acrux
(Encyclopedia)Acrux āˈkrəks [key] [from the Bayer designation α Crucis], brightest star in the constellation Crux (Southern Cross); 1992 position R.A. 12h26.2m, Dec. −63°04′. Its apparent magnitude of 0.86...pyroclastic flow
(Encyclopedia)pyroclastic flow, turbulent, fluidized mixture of rock, volcanic ash, and hot gas that moves like an avalanche away from a volcanic eruption. A pyroclastic flow may contain a mix of rock fragments ran...Negishi, Ei-ichi
(Encyclopedia)Negishi, Ei-ichi, 1935–2021, Japanese chemist, b. Changchum, China, Univ. of Tokyo (B.Eng., 1958), Univ. of Pennsylvania (Ph.D...Van, Lake
(Encyclopedia)Van, Lake vän [key], 1,453 sq mi (3,763 sq km), largest lake in Turkey, in E Turkey 65 mi (105 km) SW of Mt. Ararat. Some 75 mi (120 km) long, the lake is alkaline and has no outlet; the city of Van ...Store Bælt and Lille Bælt
(Encyclopedia)Store Bælt lĭlˈə [key] [Great Belt and Little Belt], two shallow straits, S Denmark, connecting the Kattegat with the Baltic Sea. The Store Bælt, c.40 mi (60 km) long and from 10 to 20 mi (16–3...Calais
(Encyclopedia)Calais kälāˈ [key], city, Pas-de-Calais dept., N France, in Picardy, on the Straits of Dov...celestial pole
(Encyclopedia)celestial pole, one of the two points at which the earth's axis of rotation intersects the celestial sphere. The celestial pole is important as a reference point in the equatorial coordinate system; t...Whitby, town, England
(Encyclopedia)Whitby, town, Scarborough, North Yorkshire, N England, at the mouth of the Esk. It is a port and resort whose primary industries are fishing and tourism. Jet is found locally, and jewelry and ornament...Geneva, canton and city, Switzerland
(Encyclopedia)Geneva jənēˈvə [key], Fr. Genève, canton, 109 sq mi (282 sq km), SW Switzerland, surroun...seaweed
(Encyclopedia)seaweed, name commonly used for the multicellular marine algae. Simpler forms, consisting of one cell (e.g., the diatom) or of a few cells, are not generally called seaweeds; these tiny plants help to...Browse by Subject
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