Who is friedrich mohs

He was a minerologist who studied minerals , chemistry , physics , and mathematics. He moved to Austria in where he found a job identifying minerals in a collection that belonged to a rich banker. He used physical characteristics of the crystals to determine what they were. One of the characteristics he used to identify minerals was their hardness. He knew that some of the minerals could scratch others and that if a mineral could make a scratch on another, it must be harder than the mineral that was scratched.

He found that all minerals could scratch the mineral talc, so it must be very soft. He also found that diamonds were so hard that no other minerals could scratch them.

In , Mohs made a scale from 1 to 10 to describe mineral hardness. He gave harder minerals larger numbers and softer minerals smaller numbers.

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I could find gems and information about them easily. Always a great selection Austin, July, Source: Bizrate. On the Richter scale, a magnitude 6 quake is precisely 10 times more energetic than a magnitude 5 quake, and a magnitude 7 quake is 10 times greater than a 6. You can actually calculate the energy of an earthquake from its Richter number. The Mohs scale, on the other hand, does not really tells us anything except what mineral scratches what. Mohs went on to succeed the great mineralogist Abraham Werner as professor at Freiberg in , and then became professor of mineralogy in Vienna in He is remembered in Graz by a bust in what is now the Universalmuseum Joanneum first image.

But his greatest monument has to be a memorial plaque erected by the citizens of Vienna to honor their adopted mineralogical son. It depicts Mohs and his scale, with each of the ten Mohs minerals shown in colorful relief third image.