(Encyclopedia) blood substitute, substance that mimics the function of blood. Blood substitutes typically concentrate only on reproducing the function of hemoglobin, the molecule that carries oxygen…
(Encyclopedia) bluebird, common name for a North American migratory bird of the family Turdidae (thrush family). The eastern bluebird, Sialia sialis, is among the first spring arrivals in the North.…
(Encyclopedia) waveguide, device that controls the propagation of an electromagnetic wave so that the wave is forced to follow a path defined by the physical structure of the guide. Waveguides, which…
(Encyclopedia) nationality, in political theory, the quality of belonging to a nation, in the sense of a group united by various strong ties. Among the usual ties are membership in the same general…
(Encyclopedia) free energy or Gibbs free energy, quantity derived from the relationships between heat and work studied in thermodynamics and used as a measure of the relative stability of a physical…
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CE5
Equilibrium
equilibrium, state of balance. When a body or a system is in equilibrium, there is no net tendency to change. In mechanics, equilibrium has to do with the forces…
(Encyclopedia) poster, placard designed to be posted in some public place for purposes of commercial announcement or propaganda. Advertising makes wide use of posters, as do charitable and political…
(Encyclopedia) Morris, Wright (Wright Marion Morris), 1910–98, American writer, b. Central City, Nebr. He was for many years professor of English at San Francisco State College (now San Francisco…
(Encyclopedia) loranloranlôrˈănˌ [key], long-range, accurate radio navigational system used by a ship or aircraft to confirm or to determine its geographical position. The term loran is derived from…
(Encyclopedia) Mary II, 1662–94, queen of England, wife of William III. The daughter of James II by his first wife, Anne Hyde, she was brought up a Protestant despite her father's adoption of Roman…
