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Leonardo da Vinci (Vinci 1452-Amboise 1519)

Recto: Studies of optics and men in action. Verso: Studies of optics c. 1508

RCIN 919149

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On a sheet folded into four pages, Leonardo examines the propagation of light – multiple images passing through an aperture, the shadows cast by a sphere illuminated by two sources, and the optics of the eye. The stooping man in red chalk is by a pupil. The formal layout of the pages indicates that Leonardo is thinking how to present his material in a publishable form.