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silica gel
(Encyclopedia) silica gel, chemical compound. It is a colloidal form of silica, and usually resembles coarse white sand. It may be prepared by partial dehydration of metasilicic acid, H2SiO3. Because…Baykal-Amur Mainline
(Encyclopedia) Baykal-Amur Mainline (BAM), railroad line linking central Siberian Russia with the Pacific. The BAM parallels the Trans-Siberian RR but passes north rather than south of Lake Baykal.…tuning fork
(Encyclopedia) tuning fork, steel instrument in the shape of a U with a short handle. When struck it produces an almost pure tone, retaining its pitch over a long period of time; thus it is a…liquefied petroleum gas
(Encyclopedia) liquefied petroleum gas or LPG, mixture of gases, chiefly propane and butane, produced commercially from petroleum and stored under pressure to keep it in a liquid state. The boiling…dulcimer
(Encyclopedia) dulcimerdulcimerdŭlˈsĭmər [key], stringed musical instrument. It is a wooden box with strings stretched over it that are struck with small mallets. The number of strings may vary. The…hydrogen sulfide
(Encyclopedia) hydrogen sulfide, chemical compound, H2S, a colorless, extremely poisonous gas that has a very disagreeable odor, much like that of rotten eggs. It is slightly soluble in water and is…Cartagena, city, Spain
(Encyclopedia) Cartagena, Lat. Carthago Nova, city, Murcia prov., SE Spain, on the Mediterranean Sea. A major seaport and naval base, it has a fine…Bilhorod-Dnistrovskyy
(Encyclopedia) Bilhorod-Dnistrovskyy Bilhorod-Dnistrovskyy byĭlˈhərət-dnĕstrôfˈskyē [key], Rus. Belgorod-Dnestrovsky,…gallium
(Encyclopedia) galliumgalliumgălˈēəm [key], metallic chemical element; symbol Ga; at. no. 31; at. wt. 69.723; m.p. 29.78℃; b.p. 2,403℃; sp. gr. 5.904 at 29.6℃ (solid), 6.095 at 29.8℃ (liquid);…Rochelle salt
(Encyclopedia) Rochelle salt, colorless to blue-white orthorhombic crystalline salt with a saline, cooling taste. It is also called Seignette salt after Pierre Seignette, an apothecary of La Rochelle…Trending
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