Advertisement

Advertisement

Mohs scale

[ mohz ]

noun

  1. a scale of hardness used in mineralogy. Its degrees, in increasing hardness, are: talc 1; gypsum 2; calcite 3; fluorite 4; apatite 5; feldspar 6; quartz 7; topaz 8; sapphire 9; diamond 10. : MSH


Mohs scale

/ məʊz /

noun

  1. 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
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Mohs scale

/ mōz /

  1. A scale used to measure the relative hardness of a mineral by its resistance to scratching. From softest to hardest, the ten minerals of the Mohs scale are talc (measuring 1 on the scale), gypsum, calcite, fluorite, apatite, orthoclase, quartz, topaz, corundum, and diamond (measuring 10 on the scale).
Discover More

Word History and Origins

Origin of Mohs scale1

1875–80; named after F. Mohs (1773–1839), German mineralogist
Discover More

Word History and Origins

Origin of Mohs scale1

C19: named after Friedrich Mohs (1773–1839), German mineralogist
Discover More

Example Sentences

It’s unlikely there’s even a Mohs scale value for the hardness of heart it would take to remain unmoved by the film, but there is one disingenuous aspect.

It earned similar marks to Corning’s glass on the Mohs scale of mineral hardness, though your car keys will likely still find a way to create little scratches.

Diamonds are not indestructible, but they are the hardest substances known, given the top score of 10 on the Mohs scale of hardness — that is, resistance to scratching.

Their incisors rank at 5.5 on the Mohs scale, which geologists use to measure minerals’ hardness; for comparison, iron scores around 5.0.

From Time

But nevertheless, GT built a facility that could ultimately produce enough sapphire for north of 100 million iPhones, yet not a single one uses the second-hardest material on the Mohs scale.

From Forbes

Advertisement

Advertisement

Advertisement

Advertisement


Mohr's circlemohua