Knoop test

== English == === Etymology === Developed by Frederick Knoop and colleagues at the National Bureau of Standards of the United States in 1939. === Noun === Knoop test (plural Knoop tests) A microhardness test in which a pyramidal diamond point is pressed into the polished surface of the test material with a known load, for a specified dwell time, and the resulting indentation is measured using a microscope. ==== Related terms ==== Knoop hardness