| hardness test |
A test used to determine the relative resistance to indentation or displacement of metals by pressure, or by resistance to abrasion. Common methods of testing include Brinell, Rockwell, and Vickers tests.
출처: www.scotforge.com/sf_glossary.htm
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| hardness |
Resistance a material offers to scratching or abrasion. Generally measured using the MOHS scale.
출처: www.thejewelryhut.com/html/glossary_of_jewelry_ter...
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| hardness |
"The power a stone possesses to resist abrasion when a pointed fragment of another substance is drawn across its smooth surface without sufficient pressure to develop cleavage" (GA course material).
출처: www.ganoksin.com/borisat/nenam/physical.htm
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| hardness |
A characteristic of water caused by the presence of various salts, calcium, magnesium, and iron. Water is soft if the content of these materials is low, hard if the content is high.
출처: www.gem.msu.edu/gw/vocabulary/glossary.html
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| hardness |
Generally defined as resistance to indentation using a modified Janka hardness test, measured by the load required to embed a 11.28 mm (0.444 in.) ball to one-half its diameter. Values presented are the average of radial and tangential penetrations.
출처: www.woodbook.co.uk/Glossary.htm
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