Knoop hardness number

Knoop hard·ness num·ber (KHN),

(nūp), a number obtained by dividing the load in kg applied to a pyramidal diamond of specific size divided by the projected area of the impression: KHN = L/A, where A= the projected area of the impression in mm² and L = the load in kg; used for measurements of hardness of any materials, especially very hard and brittle substances such as tooth dentin and enamel.

Knoop hard·ness num·ber

(nūp hahrd'nĕs nŭm'bĕr) Number obtained by dividing the load in kg applied to a pyramidal diamond of specific size divided by the projected area of the impression: KHN = L/A, where A = the projected area of the impression in mm² and L = the load in kg; used for measurements of hardness of any materials, especially very hard and brittle substances such as tooth dentin and enamel.

Knoop hard·ness num·ber

(KHN) (nūp hahrdnĕs nŭmbĕr) Measure; used to measure hardness of any materials, especially very hard and brittle substances, such as tooth dentin and enamel.

单词	knoop hardness number
释义	Knoop hardness number Knoop hard·ness num·ber (KHN), (nūp), a number obtained by dividing the load in kg applied to a pyramidal diamond of specific size divided by the projected area of the impression: KHN = L/A, where A= the projected area of the impression in mm² and L = the load in kg; used for measurements of hardness of any materials, especially very hard and brittle substances such as tooth dentin and enamel. Knoop hard·ness num·ber (nūp hahrd'nĕs nŭm'bĕr) Number obtained by dividing the load in kg applied to a pyramidal diamond of specific size divided by the projected area of the impression: KHN = L/A, where A = the projected area of the impression in mm² and L = the load in kg; used for measurements of hardness of any materials, especially very hard and brittle substances such as tooth dentin and enamel. Knoop hard·ness num·ber (KHN) (nūp hahrdnĕs nŭmbĕr) Measure; used to measure hardness of any materials, especially very hard and brittle substances, such as tooth dentin and enamel. AcronymsSeeKHN
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