1727 ca, GERMANY: The german philosopher, jurist, diplomatician and glottologist Gottfried Wilhelm Baron von Leibniz (1646-1716). Details of the mechanisms of the Leibniz calculator, the most advanced of its time 1727, engraved by Jacob LEUPOLD (1674-1727). Was a German polymath and philosopher who occupies a prominent place in the history of mathematics and the history of philosophy, having developed differential and integral calculus independently of Isaac Newton