What is the moh's scale and why do we need it?

Answer 1

Moh's Scale is an arbitrary scale for hardness. It is not necessarily linear along its length. But still very useful.

Answer 2

The Mohs scale is a system used to measure the hardness of minerals, with a range from 1 (softest) to 10 (hardest). It is important because it allows geologists and mineralogists to determine the relative hardness of minerals by scratching them against each other. This scale helps in identifying minerals and understanding their physical properties.