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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…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…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…Cram, Donald James
(Encyclopedia) Cram, Donald James, 1919–2001, American chemist, b. Chester, Vt., Ph.D. Harvard, 1947. A professor at the Univ. of California at Los Angeles, Cram expanded on the work of Charles J.…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…lots
(Encyclopedia) lots. The casting of lots was an ancient method of making a choice, settling a dispute, or determining a course of action. In biblical times lots were cast to determine the will of God…Willem-Alexander
(Encyclopedia) Willem-Alexander, 1967–, king of the Netherlands, eldest son of Queen Beatrix. He served (1985–87) in the navy and graduated (1993)from Leiden Univ.; he has been a member of the…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…Trending
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