The Age of Reason

Vol. I: III. Six Books on Light and Shade: 200.

Codex AtlanticusInventions and EngineeringLeonardo da VinciRenaissance Science

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The Da Vinci Notebooks On the relative depth of cast shadows (200-202).A spot is most in the shade when a large number of darkened rays fall upon it. The spot which receives the rays at the widest angle and by darkened rays will be most in the dark; a will be twice as dark as b, because it originates from twice as large a base at an equal distance. A spot is most illuminated when a large number of luminous rays fall upon it.

Vol. I: III. Six Books on Light and Shade: 200.

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