How to test quartz hardness and luster?

What is quartz? Quartz is considered one of the most abundant minerals found in the Earth crust that comes second in abundance after feldspar. The term ‘Quartz’ is derived from the Polish words “Twardy” and “kwardy” meaning ‘hard’. It is...

How to test the hardness of copper

Copper plays an important role in the life of human beings. From the delivering of electricity to the supply of water, copper made all things possible. It allows the electric current to passes through it with the same voltages; it is the good conductor of electricity....

How to test for hardness of zinc?

The hardness of the material gives it the ability to resist permanent deformation when the load is applied. From an engineering point of view, determining the hardness of the material is important because resistance to wear by erosion or friction by different elements...
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