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tungsten
(Encyclopedia)tungsten tŭngˈstən [key] [Swed.,=heavy stone], metallic chemical element; symbol W; at. no. 74; at. wt. 183.84; m.p. about 3,410℃; b.p. 5,660℃; sp. gr. 19.3 at 20℃; valence +2, +3, +4, +5, or...Periodic Table of the Elements: Tungsten
(Encyclopedia)Periodic Table of the Elements: Tungsten ...wolfram
(Encyclopedia)wolfram: see tungsten.W
(Encyclopedia)W, 23d letter of the alphabet, in form a doubled u or v. It is the usual symbol of a voiced bilabial semivowel, as in the English wing. The same semivowel occurs as second member of the dipthongs au (...Coolidge, William David
(Encyclopedia)Coolidge, William David, 1873–1975, American physical chemist, b. Hudson, Mass., grad. Massachusetts Institute of Technology, 1896. He joined the General Electric Company in 1905 and served as direc...Alice Springs
(Encyclopedia)Alice Springs, town, Northern Territory, Australia. It lies in a pastoral area surrounded by desert near the center of the continent and is a stop on the Adelaide Darwin Railway. The town ...Yuan
(Encyclopedia)Yuan yüän [key], river, 540 mi (869 km) long, rising in S Guizhou prov. and flowing generally NE to Donting lake, Hunan prov., SE China. Navigation above Changde is limited by rapids to small craft....Ganzhou
(Encyclopedia)Ganzhou or Kanchow both: gänˈjōˈ [key], city (1994 est. pop. 239,400), SW Jiangxi prov., China, on the Gan River. It is a large transportation, distribution, and commercial center. Fertilizer and ...wolframite
(Encyclopedia)wolframite wo͝olˈfrəmītˌ [key], reddish-brown to grayish-black lustrous mineral, a tungstate of iron and manganese, (Fe,Mn)Wo4, occurring in crystals of the monoclinic system. It is the chief ore...Estrela, Serra da
(Encyclopedia)Estrela, Serra da sĕrˈrə ᵺə əshtrāˈlə [key], mountain range, central Portugal. It rises to 6,532 ft (1,991 m) in Malhão da Estrela, Portugal's highest peak. The range is an important pastor...Browse by Subject
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