Mohs scale - ορισμός. Τι είναι το Mohs scale
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Τι (ποιος) είναι Mohs scale - ορισμός

QUALITATIVE ORDINAL SCALE CHARACTERIZING SCRATCH RESISTANCE OF VARIOUS MINERALS
Mohs hardness scale; Mohs Scale; Mohs hardness; Mohs scale of hardness; Mohs' scale of mineral hardness; Hardness scale; Mohs Hardness Scale; Mineral hardness; Moh's scale; Mohs' scale; Moh's Scale; The test for the hardness of minerals; Moh's Scale Of Hardness; Moh's scale of mineral hardness; Mohs's scale of mineral hardness; Mohs Scale of Mineral Hardness; Moh scale; Mohn hardness scale; Moh hardness scale; Mohs scale of mineral hardness
  • Mohs hardness kit, containing one specimen of each mineral on the ten-point hardness scale

Mohs' scale         
[m??z]
¦ noun a scale of hardness used in classifying minerals.
Origin
C19: named after the German mineralogist Friedrich Mohs.
Mohs scale of mineral hardness         
The Mohs scale of mineral hardness () is a qualitative ordinal scale, from 1 to 10, characterizing scratch resistance of various minerals through the ability of harder material to scratch softer material.
Friedrich Mohs         
  • Memorial plaque in [[Vienna]]
GERMAN GEOLOGIST AND MINERALOGIST (1773-1839)
Carl Friedrich Christian Mohs; Carl Mohs
Carl Friedrich Christian Mohs (; 29 January 1773 – 29 September 1839) was a German chemist and mineralogist. He was the creator of the Mohs scale of mineral hardness.

Βικιπαίδεια

Mohs scale

The Mohs scale of mineral hardness () is a qualitative ordinal scale, from 1 to 10, characterizing scratch resistance of minerals through the ability of harder material to scratch softer material.

The scale was introduced in 1812 by the German geologist and mineralogist Friedrich Mohs, in his book "Versuch einer Elementar-Methode zur naturhistorischen Bestimmung und Erkennung der Fossilien"; it is one of several definitions of hardness in materials science, some of which are more quantitative.

The method of comparing hardness by observing which minerals can scratch others is of great antiquity, having been mentioned by Theophrastus in his treatise On Stones, c.  300 BC, followed by Pliny the Elder in his Naturalis Historia, c.  AD 77. The Mohs scale is useful for identification of minerals in the field, but is not an accurate predictor of how well materials endure in an industrial setting – toughness.