Annealed Brass

temaire

Here is an optical microstructure of annealed brass:

Where does the contrast between grains come from?

Mech_Engineer

The molecular structure is oriented at different angles in each grain, and therefore reflects light differently.

RacinReaver

It comes from your etchant attacking different parts of the surface of your material at different rates.

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temaire	Annealed Brass Tweet Here is an optical microstructure of annealed brass: Where does the contrast between grains come from?

Mech_Engineer Blog Entries: 2 Recognitions: Gold Member Science Advisor	The molecular structure is oriented at different angles in each grain, and therefore reflects light differently.

RacinReaver	It comes from your etchant attacking different parts of the surface of your material at different rates.