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bead test
(Encyclopedia) bead test, test used in the identification of certain metals. Some metallic ions that cannot be identified by a flame test are identified by a bead test. The test can also be used to…lapwing
(Encyclopedia) lapwing, common name for some members of the family Charadriidae, which includes the plovers. Lapwings are almost all inland or upland birds, found in all temperate and tropical…lark
(Encyclopedia) lark, common name for members of the large family Alaudidae, perching birds of terrestrial habits, chiefly of the Old World and best-known through the skylark, Alauda arvensis. The…caviar
(Encyclopedia) caviar or caviarecaviarkăvˈēär [key], the roe (eggs) of various species of sturgeon prepared as a piquant table delicacy. The ovaries of the fish are beaten to loosen the eggs, which…perch
(Encyclopedia) perch, common name for some members of the family Percidae, symmetrical freshwater fishes of N Europe, Asia, and North America. The perches belong to the large order Perciformes (spiny…thistle
(Encyclopedia) thistle, popular name for many spiny and usually weedy plants, but especially applied to members of the family Asteraceae (aster family) that have spiny leaves and often showy heads of…tempering
(Encyclopedia) tempering, process involving slow and moderate heating to increase the hardness and toughness of metals that have undergone previous heat treatment. Metals are usually hardened (see…Guido d'Arezzo
(Encyclopedia) Guido d'ArezzoGuido d'Arezzogwēˈdō därĕtˈtsō [key] or Guido AretinusGuido d'Arezzoârətīˈnəs [key], c.990–1050, Italian Benedictine monk, known for his contributions to musical notation…Qingdao
(Encyclopedia) QingdaoQingdaochĭngˈdouˈ [key] or TsingtaoTsingtaotsĭngˈtouˈ, chĭngˈdouˈ [key], city (1994 est. pop. 1,584,100), SE Shandong prov., E China, on the Yellow Sea. With an excellent ice-…bee fly
(Encyclopedia) bee fly, name for the small- to medium-sized flies of the family Bombyliidae, many of which resemble bees in appearance and behavior. This mimicry provides bee flies with some measure…Trending
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