/ · The Notebooks of Leonardo da Vinci

123

Of the various kinds of shadows..

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Darkness is absence of light. Shadow is diminution of light. Primitive shadow is that which is inseparable from a body not in the light. Derived shadow is that which is disengaged from a body in shadow and pervades the air. A cast transparent shadow is that which is surrounded by an illuminated surface. A simple shadow is one which receives no light from the luminous body which causes it. A simple shadow begins within the line which starts from the edge of the luminous body a b.

Taken from The Notebooks of Leonardo da Vinci edited by Jean Paul Richter, 1880.

122 * 124
II * IV
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Notebooks of Leonoardo da Vinci
III: Six books on Light and Shade.
. . .
Prolegomena.
110
Scheme of the books on Light and shade.
111
Different principles and plans of treatment.
112,
113,
114,
115,
116
Different sorts of light.
117,
118
Definition of the nature of shadows.
119,
120,
121,
122
Of the various kinds of shadows..
123,
124,
125
Of the various kinds of light.
126,
127
General remarks.
128,
129
On the nature of light.
130,
131
The difference between light and lustre.
132,
133,
134,
135
The relations of luminous to illuminated bodies.
136
Experiments on the relation of light and shadow within a room.
137,
138,
139,
140
Light and shadow with regard to the position of the eye.
141,
142,
143
. . .