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Boyle, Kay

(Encyclopedia) Boyle, Kay, 1903–93, American writer, b. St. Paul, Minn. A European expatriate in the interwar years, she returned to Europe as a correspondent for the New Yorker (1946–53) and…

Benet, Juan

(Encyclopedia) Benet, JuanBenet, Juanbənetˈ [key], 1927–93, Spanish novelist and essayist. He earned a degree in civil engineering and worked as a highway engineer before publishing (1961) his first…

pulley

(Encyclopedia) CE5 Pulleys: The mechanical advantage (MA) of a system of pulleys is equal to the number of supporting strands: in A MA=1 and in B MA=2. pulley, simple machine consisting of a…

monopoly

(Encyclopedia) monopolymonopolymənōpˈəlē [key], market condition in which there is only one seller of a certain commodity; by virtue of the long-run control over supply, such a seller is able to…

chemical equilibrium

(Encyclopedia) chemical equilibrium, state of balance in which two opposing reversible chemical reactions proceed at constant equal rates with no net change in the system. For example, when hydrogen…

solenoid

(Encyclopedia) solenoidsolenoidsōˈlənoidˌ [key], device made of a long wire that has been wound many times into a tightly packed coil; it has the shape of a long cylinder. If current is sent through…

Quidor, John

(Encyclopedia) Quidor, JohnQuidor, Johnkĭdôrˈ [key], 1801–81, American painter, b. Tappan, N.Y., studied with J. W. Jarvis. Little appreciated in his own time, he was subsequently accorded a place…

Goring, George Goring, Baron

(Encyclopedia) Goring, George Goring, Baron, 1608–57, English royalist commander in the civil war. He was a court gallant who had previously served in the Dutch army. In 1641 a group of army officers…

Guaidó, Juan

(Encyclopedia) Guaidó, Juan (Juan Gerardo Guaidó Márquez), 1983–, Venezuelan political leader. An industrial engineer by training, he helped establish the Popular Will party in 2009 and was a protégé…