Wikimedi'Òc

1664-12-11 Huygens a P. Petit (lantern sketch).gif - Joortje1

1694 Christiaan Huygens - Laterna Magica.jpg - Joortje1

1664-12-11 Lantern sketch - Huygens a Petit.jpg - Joortje1

Two designs for levels, on the right (fig. 14) by Jean Picard and on the left (fig. 13) by Christiaan Huygens) - JM (or TM) sc 1768 LCCN2006691766.jpg - Fæ

Two designs for levels, on the right (fig. 14) by Jean Picard and on the left (fig. 13) by Christiaan Huygens) - JM (or TM) sc 1768 LCCN2006691766.tif - Fæ