Christiaan Huygens
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Christiaan Huygens, Lord of Zeelhem was a Dutch mathematician, physicist, engineer, astronomer, and inventor who is regarded as a key figure in the Scientific Revolution. In physics, Huygens made semi
Portrait by Caspar Netscher, 1671
Christiaan Huygens, relief by Jean-Jacques Clérion (c. 1670)
Huygens, right of centre, from L'établissement de l'Académie des Sciences et fondation de l'observatoire, 1666 by Henri Testelin (c. 1675)
Hofwijck, Huygens's summer home; now a museum
Gottfried Wilhelm Leibniz
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Gottfried Wilhelm Leibniz was a German polymath active as a mathematician, philosopher, scientist, and diplomat who is credited, alongside Isaac Newton, with the creation of calculus in addition to ma
Leibniz c. 1695
Leibniz monument at Leipzig University
Gottfried Wilhelm Leibniz
Stepped reckoner