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city planning

(Encyclopedia)city planning, process of planning for the improvement of urban centers in order to provide healthy and safe living conditions, efficient transport and communication, adequate public facilities, and a...

lead, chemical element

(Encyclopedia)lead, metallic chemical element; symbol Pb [Lat. plumbum]; at. no. 82; at. wt. 207.2; m.p. 327.502℃; b.p. about 1,740℃; sp. gr. 11.35 at 20℃; valence +2 or +4. One of the oldest metals used by h...

diving, deep-sea

(Encyclopedia)diving, deep-sea, act of descending into deep water, generally with some form of breathing apparatus, and remaining there for an extended period. It is used in fishing for sponges, coral, and pearls; ...

wave, in the earth sciences

(Encyclopedia)CE5 A. Diagram of wave: Wave travels one wavelength during one period B. Diagram of wave: Phase relationships wave, in oceanography, an oscillating movement up and down, of a body of water caused ...

socialism

(Encyclopedia)socialism, general term for the political and economic theory that advocates a system of collective or government ownership and management of the means of production and distribution of goods. Because...

Flanders

(Encyclopedia)Flanders flănˈdərz [key], former county in the Low Countries, extending along the North Sea and W of the Scheldt (Escaut) River. It is divided among East Flanders and West Flanders provs., Belgium;...

magic, in entertainment

(Encyclopedia)magic, in entertainment, the seeming manipulation and supernatural control of the natural world for the amusement and amazement of an audience. Entertainment magic can be divided into four main catego...

flight

(Encyclopedia)CE5 Aircraft motions and control surfaces: Yaw, or motion to the left or right, is controlled by the rudder. Pitch, or climbing or dropping, is controlled by the elevators, which move in the same d...

housing

(Encyclopedia)housing, in general, living accommodations available for the inhabitants of a community. Throughout the 19th cent., with the advent of the Industrial Revolution, housing as a problem worsened as urban...

Egyptian art

(Encyclopedia)Egyptian art, works of art created in the geographic area constituting the nation of Egypt. It is one of the world's oldest arts. The art of the New Kingdom (1570–1342 b.c.) can be viewed as th...