e/Berkovich tip

Information
has gloss	eng: A Berkovich tip is a nano indenter used for testing the indentation hardness of a material. It is a three sided pyramid which is geometrically self similar. It has a very flat profile, with a total included angle of 142.3 degrees and a half angle of 65.35 degrees. The Berkovich tip has the same projected area to depth ratio as a Vickers indenter. The indenter was invented by Russian scientist E.S. Berkovich in the USSR circa 1950.
lexicalization	eng: Berkovich tip
instance of	c/Hardness tests

Media
media:img	Berkovich.jpg