Mohs scale

(redirected from Hardness scale)
Also found in: Thesaurus, Medical, Encyclopedia.
Related to Hardness scale: Vickers hardness scale

Mohs scale

 (mōz)
n.
A scale for classifying minerals based on relative hardness, determined by the ability of harder minerals to scratch softer ones. The scale includes the following minerals, in order from softest to hardest: 1. talc; 2. gypsum; 3. calcite; 4. fluorite; 5. apatite; 6. orthoclase; 7. quartz; 8. topaz; 9. corundum; 10. diamond.

[After Friedrich Mohs (1773-1839), German mineralogist.]

Mohs scale

(məʊz)
n
(Minerals) a scale for expressing the hardness of solids by comparing them with ten standards ranging from talc, with a value of 1, to diamond, with a value of 10
[C19: named after Friedrich Mohs (1773–1839), German mineralogist]

Mohs′ scale`

(moʊz)
n.
a scale of hardness for minerals, consisting of the following degrees, in increasing hardness: talc 1; gypsum 2; calcite 3; fluorite 4; apatite 5; orthoclase 6; quartz 7; topaz 8; corundum 9; diamond 10.
[1875–80; after French. Mohs (1773–1839), German mineralogist]

Mohs scale

(mōz)
A scale used to measure the relative hardness of a mineral by its resistance to scratching. There are ten standard minerals on this scale, ranging from talc, the softest (measuring 1 on the scale), to diamond, the hardest (measuring 10 on the scale).
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.Mohs scale - a scale of hardness of solidsMohs scale - a scale of hardness of solids; talc is 0 and diamond is 10; ordering is determined by which substance can scratch another substance
graduated table, ordered series, scale, scale of measurement - an ordered reference standard; "judging on a scale of 1 to 10"
References in periodicals archive ?
Pencils are graded on a hardness scale, and any graphite grade less than #6H should not gouge solder mask.
They are tempered to RC60-61 hardness from the Rockwell hardness scale, which measures the tensile strength of materials.
Military-grade kinetic energy X-orbing protection layer is hammer-hit tough, with a 3H hardness scale rating and can even self-heal from minor impact dents.
In some areas, rock was 20,000 to 31,000 psi on the hardness scale.
If you are watching the hardness scale on your recorder, look for places where sand meets hard bottom with small breaks and peaks for red grouper.
Originally developed for use in industrial applications, Zirconium Oxide is second on the hardness scale only to diamond.
Medalist MD-447 is so soft that it cannot be measured accurately on the Shore A hardness scale used for other Medalist TPEs, the softest of which has a rating of 5A.
The transparent Medalist MD-447 hydrogenated styrenic block copolymer compound is said to be so soft that it could not be measured accurately on the Shore A hardness scale used for other Medalist elastomers, the softest of which has a Shore A rating of 5.
The Mohs hardness scale * uses an object's resistance to scratching to rank the hardness of minerals.
Her four books of poems are The Hardness Scale, A Dog in the Lifeboat, Mortal Education, and Eastern Mountain Time.
3] has a value of 9 on Mohs hardness scale compared to 10 for diamond, the highest value on this scale.
On the calcium hardness scale, the water treatment plant near Waldenburg registered 415.