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(Encyclopedia) Commonwealth of Independent States (CIS), community of independent nations established by a treaty signed at Minsk, Belarus, on Dec. 8, 1991, by the heads of state of Russia, Belarus, and Ukraine. Bet...
(Encyclopedia) Byzantine art and architecture, works of art and structures works produced in the city of Byzantium after Constantine made it the capital of the Roman Empire (a.d. 330) and the work done under Byzanti...
(Encyclopedia) geometry [Gr.,=earth measuring], branch of mathematics concerned with the properties of and relationships between points, lines, planes, and figures and with generalizations of these concepts.
Eucli...
(Encyclopedia) vector, quantity having both magnitude and direction; it may be represented by a directed line segment. Many physical quantities are vectors, e.g., force, velocity, and momentum. Thus, in specifying a...
(Encyclopedia) tapestry, hand-woven fabric of plain weave made without shuttle or drawboy, the design of weft threads being threaded into the warp with fingers or a bobbin. The name has been extended to cover a vari...
(Encyclopedia) international law, body of rules considered legally binding in the relations between national states, also known as the law of nations. It is sometimes called public international law in contrast to p...
(Encyclopedia) Mies van der Rohe, Ludwig lo͞otˈvĭkh mēˈĕs vän dĕr rōˈə [key], 1886–1969, German-American architect. A pioneer of modern architecture and one of its most influential figures, he is famous...
(Encyclopedia) navigation satellite, artificial satellite designed expressly to aid the navigation of sea and air traffic. Early navigation satellites, from the Transit series launched in 1960 to the U.S. navy's Nav...
(Encyclopedia) Ottawa ŏtˈəwə [key], city (1991 pop. 313,987), capital of Canada, SE Ont., at the confluence of the Ottawa and Rideau rivers and across the Ottawa from Gatineau, Que. The Rideau Canal separates th...
(Encyclopedia) photocopying, process whereby written or printed matter is directly copied by photographic techniques. Generally, photocopying is practical when just a few copies of an original are needed. When many ...