| Knoop hardness number |
A number related to the applied load and to the projected area of a rhombic-based diamond indentor, with edge angles of 172 1/2 30' and 130 1/2.
출처: www.sfsa.org/sfsa/glossary/deftrmkk.html
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| Knoop hardness n. |
a number indicative of the degree of relative hardness of a material, calculated from the load employed and the length of the long axis of the impression made by the rhomboidal pyramid of a diamond pressed into the surface of the material being tested. It is the test most commonly used in dental practice to test the hardness of teeth.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
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