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law of simple multiple proportions
(Encyclopedia) law of simple multiple proportions, in chemistry, the statement that when two or more elements form more than one compound, the ratio of the weights of one element that combine with a…melting point
(Encyclopedia) melting point, temperature at which a substance changes its state from solid to liquid. Under standard atmospheric pressure different pure crystalline solids will each melt at a…metric system
(Encyclopedia) CE5 metric system, system of weights and measures planned in France and adopted there in 1799; it has since been adopted by most of the technologically developed countries of the…Gramme, Zénobe-Théophile
(Encyclopedia) Gramme, Zénobe-ThéophileGramme, Zénobe-Théophilezānôbˈ tāôfēlˈ gräm [key], 1826–1901, Belgian electrical engineer. While working as a model maker for a Parisian manufacturer of…Canonsburg
(Encyclopedia) Canonsburg, borough (2020 pop. 8,672), Washington co., SW Pa., inc. 1802. Its steel and coal industries have declined significantly. A…chickpea
(Encyclopedia) chickpea, annual plant (Cicer arietinum) of the family Leguminosae (pulse family), cultivated since antiquity for the somewhat pealike seeds, which are often used as food and forage,…antibiotic
(Encyclopedia) antibiotic, any of a variety of substances, usually obtained from microorganisms, that inhibit the growth of or destroy certain other microorganisms. Although for centuries…Dubos, René Jules
(Encyclopedia) Dubos, René JulesDubos, René Julesrənāˈ zhül dübōˈ [key], 1901–82, American bacteriologist, b. France, Ph.D. Rutgers, 1927. He joined the Rockefeller Institute (now Rockefeller Univ.)…Curie
(Encyclopedia) CurieCuriekürēˈ [key], family of French scientists. Pierre Curie, 1859–1906, scientist, and his wife, Marie Sklodowska Curie, 1867–1934, chemist and physicist, b. Warsaw, are known for…Lathrop, Rose Hawthorne
(Encyclopedia) Lathrop, Rose Hawthorne, 1851–1926, American nun, philanthropist, and writer; youngest daughter of Nathaniel Hawthorne. In 1871 she married George Parsons Lathrop. In 1891 she and her…Trending
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