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hardness according to the Mohs scale

См. также в других словарях:

  • scale — 1. A standardized test for measuring psychological, personality, or behavioral characteristics. SEE ALSO: score, test. 2. SYN: squama. 3. A small thin plate of horny epithelium, resembling a fish s., cast off from the skin …   Medical dictionary

  • BETA (Muv-Luv) — The Beings of the Extra Terrestrial origin which is Adversary of human race or BETA are a fictional extraterrestrial lifeform in the Muv Luv computer games.Muv Luv Unlimited and Alternative take place in alternate worlds where the BETA invaded… …   Wikipedia

  • Mineral — For other uses, see Mineral (disambiguation). An assortment of minerals. A mineral is a naturally occurring …   Wikipedia

  • Level of measurement — The levels of measurement , or scales of measure are expressions that typically refer to the theory of scale types developed by the psychologist Stanley Smith Stevens. Stevens proposed his theory in a 1946 Science article titled On the theory of… …   Wikipedia

  • Klerksdorp Spheres — The Klerksdorp Spheres are small, often spherical to disc shaped, objects, which have been collected by miners and rockhounds from 3.0 billion year old pyrophyllite deposits mined by Wonderstone Ltd., near Ottosdal, South Africa. These objects… …   Wikipedia

  • Ancient Egyptian technology — The characteristics of Ancient Egyptian technology are indicated by a set of artifacts and customs that lasted for thousands of years. The Egyptians invented and used many basic machines, such as the ramp and the lever, to aid construction… …   Wikipedia

  • Silicon carbide — Chembox new Name = Silicon carbide ImageFile = Silicon carbide 3D balls.png ImageSize = 140px ImageName = Ball and stick model of part of a crystal of SiC ImageFile1 = silicon carbide detail.jpg ImageSize1 = 140px OtherNames = Section1 = Chembox… …   Wikipedia

  • Diamond — This article is about the mineral. For the gemstone, see Diamond (gemstone). For other uses, including the shape ◊, see Diamond (disambiguation) …   Wikipedia

  • geology — /jee ol euh jee/, n., pl. geologies. 1. the science that deals with the dynamics and physical history of the earth, the rocks of which it is composed, and the physical, chemical, and biological changes that the earth has undergone or is… …   Universalium

  • Material properties of diamond — This article addresses the material properties of diamond. For a broader discussion of diamonds, see diamond. For other uses of the word diamond, see diamond (disambiguation). Diamond An octahedral diamond crystal in matrix Gener …   Wikipedia

  • Klerksdorp sphere — Klerksdorp spheres are small objects, often spherical to disc shaped, that have been collected by miners and rockhounds from 3 billion year old pyrophyllite deposits mined by Wonderstone Ltd., near Ottosdal, South Africa. They have been cited by… …   Wikipedia

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