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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...

Wien, Wilhelm

(Encyclopedia)Wien, Wilhelm vĭlˈhĕlm vēn [key], 1864–1928, German physicist. He was professor at the universities of Giessen (1899), Würzburg (1900–1920), and Munich (from 1920). He received the 1911 Nobel...

Hamer, Fannie Lou

(Encyclopedia)Hamer, Fannie Lou, 1917–1977, U.S. voting rights activist and civil rights leader, b. Montgomery County, Miss. Fannie Lou Hamer was the first woman fr...

natural law

(Encyclopedia)natural law, theory that some laws are basic and fundamental to human nature and are discoverable by human reason without reference to specific legislative enactments or judicial decisions. Natural la...

Arlberg

(Encyclopedia)Arlberg ärlˈbĕrk [key], pass, 5,946 ft (1,812 m) high, W Austria, on the boundary between Tyrol and Vorarlberg. The Arlberg region forms the water divide between rivers flowing to the North Sea and...

Midlands

(Encyclopedia)Midlands, region of central England. It is usually considered to include the counties of Derbyshire, Leicestershire, Northamptonshire, Nottinghamshire, Staffordshire, Warwickshire, and Worcestershire,...

Kizil Irmak

(Encyclopedia)Kizil Irmak kəzŭlˈ ərmäkˈ [key], anc. Halys, longest river of Turkey, c.715 mi (1,150 km) long, rising in the Kizil Dağ, N central Turkey, and flowing in a wide arc SW, then N, and then NE into...

hearts

(Encyclopedia)hearts, card game played by three to six players with an ordinary deck. All the cards are dealt to the players. After a card is led, each hand must follow suit if possible. The object is to avoid accu...

Gunnison

(Encyclopedia)Gunnison, river, 180 mi (290 km) long, rising in W central Colo. and flowing SW, W, and NW to the Colorado River at Grand Junction. It flows through magnificent canyons, notably the Black Canyon of th...

antithesis

(Encyclopedia)antithesis ăntĭthˈĭsĭs [key], a figure of speech involving a seeming contradiction of ideas, words, clauses, or sentences within a balanced grammatical structure. Parallelism of expression serves...