Stevin, Simon sē´môn stəvīn´ [key], 1548–1620, Dutch engineer and mathematician. His experiments in hydrostatics showed that the pressure exerted by a liquid is dependent only on its vertical height and not on the shape of the liquid's container, and demonstrated the principle of the hydraulic press. He probably anticipated Galileo 's experiments with falling bodies. Stevin is also credited with the introduction of decimals into common usage.
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