Leonardo da Vinci’s work (contd.)
Leonardo (1452-1519), familiar with the work of Alhazen and
after an extensive study of optics and human vision publishes
the first detailed description of the camera obscura in “Codex
Atlanticus” (1502):
   “In the facade of a building, or a place, or a landscape is
illuminated by the sun and a small hole is drilled in the wall of
a room in a building facing this, which is not directly lighted
by the sun, then all objects illuminated by the sun will send
their images through this aperture and will appear, upside
down, on the wall facing the hole”
   "You can catch these pictures on a piece of white paper, which
is placed vertically in the room not far from that opening. The
paper should be very thin and must be viewed from the back.”
Leonardo calls the camera obscura the “oculus artificialis” -
“the artificial eye”