| 释义 |
Mohs|məʊz|
The name of Friedrich Mohs (see mohsine), used attrib. and in the possessive (chiefly in Mohs('s) scale) with reference to a scale of hardness he devised in which ten reference minerals that include very soft and very hard ones are assigned values of one to ten in order of increasing hardness.
The ten minerals of the scale are: 1, talc; 2, gypsum; 3, calcite; 4, fluor-spar; 5, apatite; 6, orthoclase; 7, quartz; 8, topaz; 9, corundum; 10, diamond.
1879Mineral Mag. II. 265 Its density is 1·0025; hardness between 1 and 2 of Mohs's scale. 1897Amer. Jrnl. Sci. CLIV. 409 We shall describe only a preliminary series of tests with the minerals of the Mohs scale. 1951D. Tabor Hardness of Metals i. 2 The Mohs hardness scale has been widely used by mineralogists and lapidaries. 1962R. Webster Gems I. iv. 74 The hardness of beryl is 7½ on Mohs's scale. 1974Sci. Amer. Aug. 64 Each material in the Mohs scale, up to Mohs 9 (corundum), is about 1·2 times as hard as the preceding material. Thus the scale is almost logarithmic from Mohs 1 through Mohs 9, a range that includes all but a few substances.
¶ Erron. written as Moh (or moh).
1903J. E. Marr Agric. Geol. ii. 28 Moh's scale of hardness. 1934J. H. Perry Chem. Engineers' Handbk. xvi. 1558 The hardness of a material as measured by the moh scale is not always a criterion of its resistance to crushing. 1969B. R. Schlenker Introd. Materials Sci. iv. 69 A Moh's hardness determination set of minerals. |
