Drawings by Leonardo Da Vinici on on the mechanical powers and forces, percussion, gravity, motion, optics and astronomy, with various arithmetical and geometrical propositions. Notebook of Leonardo da Vinci. Italy, early 16th
Trinkglas OPTIC 6 Stück sortiert 300 ml farbig – Leonardo
File:Leonardo da Vinci - RCIN 912447, Verso Studies of optics c.1490.jpg - Wikimedia Commons