单词 | sclerometer |
释义 | sclerometern. An instrument for measuring the hardness of crystals. ΘΚΠ the world > matter > constitution of matter > hardness > [noun] > measurement or instruments for determining sclerometer1879 Scleroscope1907 Shore Scleroscope1908 Brinell1915 hardometer1919 Rockwell1920 indenter1929 1879 in Webster's Amer. Dict. Eng. Lang. Suppl. 1886 Judd in Mineral. Mag. Dec. 85 A means of expressing the cohesive force in different parts of a crystal mass as determined by the sclerometer. 1895 N. Story-Maskelyne Crystallogr. i. §9 The hardness of crystals in different directions has been estimated by means of an instrument termed a sclerometer. This entry has not yet been fully updated (first published 1910; most recently modified version published online March 2018). < n.1879 |
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