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tunnel

(Encyclopedia)tunnel, underground passage usually made without removing the overlying rock or soil. Although tunnels are approximately horizontal, they must be built with sufficient gradient for proper drainage. Tu...

Beethoven, Ludwig van

(Encyclopedia)Beethoven, Ludwig van lŭdˈwĭg văn bāˈtōvən, Ger. lo͝otˈvĭkh fän bātˈhōfən [key], 1770–1827, German composer. He is universally recognized as one of the greatest composers of the West...

woodcut and wood engraving

(Encyclopedia)woodcut and wood engraving, prints made from designs cut in relief on wood, in contrast to copper or steel engraving and etching (which are intaglio). The term woodcutting is loosely included within t...

Metropolitan Opera Company

(Encyclopedia)Metropolitan Opera Company, term used in referring collectively to the organizations that have produced opera at the Metropolitan Opera House, New York City. The original house, at West 39th Street an...

fisheries

(Encyclopedia)fisheries. From earliest times and in practically all countries, fisheries have been of industrial and commercial importance. In the large N Atlantic fishing grounds off Newfoundland and Labrador, for...

woman suffrage

(Encyclopedia)woman suffrage, the right of women to vote. Throughout the latter part of the 19th cent. the issue of women's voting rights was an important phase of feminism. On the European mainland, Finland (1...

Mary Queen of Scots

(Encyclopedia)Mary Queen of Scots (Mary Stuart), 1542–87, only child of James V of Scotland and Mary of Guise. Through her grandmother Margaret Tudor, Mary had the strongest claim to the throne of England after t...

nationalism

(Encyclopedia)nationalism, political or social philosophy in which the welfare of the nation-state as an entity is considered paramount. Nationalism is basically a collective state of mind or consciousness in which...

earth, in geology and astronomy

(Encyclopedia)CE5 A. Cross section of the earth, showing its shells B. Detailed cross section of the crust and upper mantle: The lithosphere consists of the hard rock in the crust and upper mantle, lying above t...

Marxism

(Encyclopedia)Marxism, economic and political philosophy named for Karl Marx. It is also known as scientific (as opposed to utopian) socialism. Marxism has had a profound impact on contemporary culture; modern comm...