NEW YORK (AP) — It looks a bit like a hashtag, but it’s 73,000 years old. And scientists say this tiny sketch found in a South African cave is the oldest known drawing. It’s not the earliest ...
Graphics; or, the Art of Calculation by drawing Lines, applied especially to Mechanical Engineering.
MAXWELL was the first, according to the Introduction of the present treatise, to state the principles in a very complete and general manner by which stress-diagrams are drawn, in the Phil. Mag., xxvii ...
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