We like mechanical calculators like slide rules, but we have to admit that we had not heard of the Ott Derivimeter that [Chris Staecker] shows us in a recent video. As the name implies, the ...
Joseph Keller, professor emeritus of mathematics and mechanical engineering, died at his home in Palo Alto from kidney cancer on Sept. 7 at 93 years old. Best known for his geometrical theory of ...
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