- pendulum hardness
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маятниковая твёрдость, твёрдость по Герберту
Англо-русский словарь технических терминов. 2005.
Англо-русский словарь технических терминов. 2005.
Hardness — This article is about mechanical properties of materials. For other uses, see Hard. Hardness is the measure of how resistant solid matter is to various kinds of permanent shape change when a force is applied. Macroscopic hardness is generally… … Wikipedia
Persoz pendulum — A Persoz pendulum is a device used for measuring hardness of materials. The instrument consists of a pendulum which is free to swing on two balls resting on a coated test panel. The pendulum hardness test is based on the principle that the… … Wikipedia
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Peirce, Charles Sanders — born Sept. 10, 1839, Cambridge, Mass., U.S. died April 19, 1914, near Milford, Pa. U.S. scientist, logician, and philosopher. He was the son of the mathematician and astronomer Benjamin Peirce (1809–80). After attending Harvard University he… … Universalium
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