In 1812, German mineralogist Friedrich Mohs developed a hardness scale for minerals (now universally used on metals, etc.)
The scale was based on whether the sample could be scratched by a material of known hardness. The standard was Diamond, with a Mohs Hardness Number of 10.
the mohs hardness scale
Topaz is number 8 on the Mohs scale.
The softest material in the mohs scale is talc
It is about 2.5 in the Mohs Hardness Scale.
Pure copper has a Mohs Hardness of 3. So called copper coins have a Mohs hardness of 3.2-3.5. Please see related links.
he was a science person about rocks
Yes
yes
Friedrich Mohs's father's name was Carl Friedrich Mohs.
the mohs hardness scale
Tantalum is 6.5 on the Mohs scale,
Friedrich Mohs created it
It's called the Ore
Mohs 3.5-4.0.
Mohs 3.5-4.0.
moh stands for medals of honer
Friedrich Mohs is famous for creating the Mohs scale of mineral hardness. He formulated a scale of one to ten and assigned each mineral a value. This eventually became the basis for the Mohs scale.