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Euler, Leonhard
(Encyclopedia) Euler, LeonhardEuler, Leonhardlāˈônhärt oiˈlər [key], 1707–83, Swiss mathematician. Born and educated at Basel, where he knew the Bernoullis, he went to St. Petersburg (1727) at the…standard of living
(Encyclopedia) standard of living, level of consumption that an individual, group, or nation has achieved. The evaluation of a standard of living is relative, depending upon the judgment of the…switch
(Encyclopedia) switch, electrical device having two states: on, or closed; and off, or open. Ideally a switch offers a zero impedance to a current when it is closed, and it offers infinite impedance…Wynette, Tammy
(Encyclopedia) Wynette, Tammy Wynette, Tammy wīnĕtˈ [key], 1942–98, American singer and songwriter, often called…Arnhem Land
(Encyclopedia) Arnhem Land, 37,100 sq mi (96,089 sq km), N Northern Territory, Australia, on a wide peninsula W of the Gulf of Carpentaria. The great majority of the region belongs to the Arnhem Land…Le Bon, Gustave
(Encyclopedia) Le Bon, GustaveLe Bon, Gustavegüstävˈ lə bôN [key], 1841–1931, French psychologist and sociologist. He was the author of a number of works on social psychology, in which he expounded…D
(Encyclopedia) D, fourth letter of the alphabet. It corresponds to the Greek delta. It is a usual symbol for a voiced dental or, as in English, alveolar stop. The capital represents in musical…Christie, Perry Gladstone
(Encyclopedia) Christie, Perry Gladstone, 1943–, Bahamian political leader. A member of the Progressive Liberal party, he practiced law for several years before serving (1977–2017; as an independent…Hillerød
(Encyclopedia) Hillerød Hillerød hĭlˈəröᵺ [key], city, capital of Frederiksborg co., E Denmark. It is an industrial…average
(Encyclopedia) average, number used to represent or characterize a group of numbers. The most common type of average is the arithmetic mean. See median; mode.Trending
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