These sets were added to the same sets as the selected media entry.
Hermann von Helmholtz: Handbuch der physiologischen Optik (1896)
Philipp Otto Runge: Farben-Kugel (1810)
René Descartes: Discours de la méthode (1658)
Athanasius Kircher: Ars magna lucis et umbrae (1671)
Isaac Newton: Opticks (1704)