(Encyclopedia) Castor and PolluxCastor and Polluxpŏlˈəks [key], in classical mythology, twin heroes called the Dioscuri; Castor was the son of Leda and Tyndareus, Pollux the son of Leda and Zeus.…
(Encyclopedia) strategy and tactics, in warfare, related terms referring, respectively, to large-scale and small-scale planning to achieve military success. Strategy may be defined as the general…
(Encyclopedia) supply and demand, in classical economics, factors that are said to determine price, by correlating the amount of a given commodity producers hope to sell at a certain price (supply),…
(Encyclopedia) tar and pitch, viscous, dark-brown to black substances obtained by the destructive distillation of coal, wood, petroleum, peat, and certain other organic materials. The heating or…
(Encyclopedia) adhesion and cohesion, attractive forces between material bodies. A distinction is usually made between an adhesive force, which acts to hold two separate bodies together (or to stick…
(Encyclopedia) Walton and WeybridgeWalton and Weybridgewāˈbrĭj [key], city (19981 pop. 50,031), Surrey, SE England. It is largely a residential suburb of London. There is market gardening, an…
(Encyclopedia) Urim and ThummimUrim and Thummimy&oomacr;ˈrĭm, thŭmˈĭm [key], in the Bible, name of sacred instruments used for casting lots. The meaning of the two names is uncertain, as is the…
(Encyclopedia)
CE5
Wheel and axle
wheel and axle, simple machine consisting of a wheel mounted rigidly upon an axle or drum of smaller diameter, the wheel and the axle having the same axis. It is…
