Questions tagged [ancient]

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Oldest example of (intentional) PID control

Background: PID (proportional-integral-derivative) control has been around for a long time. It was in textbooks in the early 1900's. The Routh-Hurwitz stability criterion is from 1895. link ...
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What evidence is there that the Babylonians used the Babylonain method of estimating square roots?

The Babylonian method for computing square roots is described (among other places) in this Wikipedia article. What evidence is there that they actually used this method? I have found several ...