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radical, in mathematics
(Encyclopedia) radical, in mathematics, symbol () placed over a number or expression, called the radicand, to indicate a root of the radicand. When used without a sign or index number, as in 4, it…Evans, George Henry
(Encyclopedia) Evans, George Henry, 1805–56, American labor and agrarian reformer, b. England. After emigrating (1820) to New York City, he edited several newspapers, among them the Workingman's…flerovium
(Encyclopedia) flerovium, artificially produced radioactive chemical element; symbol Fl; at. no. 114; mass number of most stable isotope 289; m.p., b.p., sp. gr., and valence unknown. Situated in…statistical mechanics
(Encyclopedia) statistical mechanics, quantitative study of systems consisting of a large number of interacting elements, such as the atoms or molecules of a solid, liquid, or gas, or the individual…molecular weight
(Encyclopedia) molecular weight, weight of a molecule of a substance expressed in atomic mass units (amu). The molecular weight may be calculated from the molecular formula of the substance; it is…Graces
(Encyclopedia) Graces, in Greek mythology, personifications of beauty, charm, and grace; daughters of Zeus and the oceanid Eurynome. Also known as the Charites, they were usually three in number and…Carpenter, George Rice
(Encyclopedia) Carpenter, George Rice, 1863–1909, American educator, b. Labrador, grad. Harvard, 1886. After study abroad, he returned to teach at Harvard (1888–90) and Massachusetts Institute of…Tiele, Cornelis Petrus
(Encyclopedia) Tiele, Cornelis PetrusTiele, Cornelis Petruskôrnāˈlĭs pāˈtrəs tēˈlə [key], 1830–1902, Dutch theologian and author of a number of valuable works on the history of religion. Important is…Baghlan
(Encyclopedia) BaghlanBaghlanbägˈlän [key], city (1982 est. pop. 41,200), N Afghanistan, on the Kunduz River. It produces beet sugar, cotton, and fabrics. A recently constructed highway system links…Hughes, Howard Robard
(Encyclopedia) Hughes, Howard Robard, 1905–76, U.S. business executive, b. Houston. As a young man he inherited (1925) the patent rights to an oil tool drill, which, manufactured by the Hughes Tool…Trending
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