Experiments on Hardness and Penetration


I AM greatly interested in the letter on “A Curious Feature in the Hardness of Metals,” by Mr. Hugh O'Neill and Dr. F. C. Thompson, which appears at p. 773 of NATURE of December 9, for in my paper “Experiments with Clay in its relation to Piles,” read before the Society of Engineers on March 10, 1919, will be found an account of the “pressure of fluidity… (More)
DOI: 10.1038/111017a0


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