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1Hardness — Hard ness, n. [AS. heardness.] 1. The quality or state of being hard, literally or figuratively. [1913 Webster] The habit of authority also had given his manners some peremptory hardness. Sir W. Scott. [1913 Webster] 2. (Min.) The cohesion of the …
2Hardness — This article is about mechanical properties of materials. For other uses, see Hard. Hardness is the measure of how resistant solid matter is to various kinds of permanent shape change when a force is applied. Macroscopic hardness is generally… …
3hardness — noun 1. the property of being rigid and resistant to pressure; not easily scratched; measured on Mohs scale • Ant: ↑softness • Derivationally related forms: ↑hard • Hypernyms: ↑consistency, ↑consistence, ↑eubstance, ↑ …
4hardness — hard ► ADJECTIVE 1) solid, firm, and rigid; not easily broken, bent, or pierced. 2) requiring or demonstrating a great deal of endurance or effort; difficult. 3) (of a person) not showing any signs of weakness; tough. 4) (of information or a… …
5hardness — / hɑ:dnəs/ noun ♦ hardness of the market the state of the market as being strong and not being likely to fall …
6hardness — / hɑ:dnəs/ noun ♦ hardness of the market the state of the market when it is strong and not likely to fall …
7permanent hardness — hardness of water not removed by boiling; it is usually due to sulfates and chlorides …
8Vickers hardness test — A Vickers hardness tester The Vickers hardness test was developed in 1924 by Smith and Sandland at Vickers Ltd as an alternative to the Brinell method to measure the hardness of materials.[1] The Vickers test is often easier to use than other… …
9Mohs hardness — Rough measure of the resistance of a smooth surface to scratching or abrasion, expressed in terms of a scale devised by German mineralogist Friedrich Mohs in 1812. Minerals are ranked in comparison with the Mohs scale, which is made up of 10… …
10Indentation hardness — tests are used to determine the hardness of a material to deformation. Several such tests exist, wherein the examined material is indented until an impression is formed; these tests can be performed on a macroscopic or microscopic scale. When… …
