Nicolaas Hartsoeker
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Nicolaas Hartsoeker was a Dutch mathematician and physicist who invented the screw-barrel simple microscope c. 1694.
Portrait by Caspar Netscher, 1682
Principes de physique, 1696
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
Nicolaas Hartsoeker
…situation that would later lead to a priority dispute between Hartsoeker and Leeuwenhoek over the discovery of spermatozoids. In 1677, Hartsoeker met Christiaan Huygens and initiated him in the making of lenses. In June 1678, Hartsoeker accompanied, in the role of an assistant, Huygens on a trip to Paris, where they…
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