/ · The Notebooks of Leonardo da Vinci

66

Proof by experiment.

[figure]

The images of objects are all diffused through the atmosphere which receives them; and all on every side in it. To prove this, let a c e be objects of which the images are admitted to a dark chamber by the small holes n p and thrown upon the plane f i opposite to these holes. As many images will be produced in the chamber on the plane as the number of the said holes.

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

65 * 67
I * III
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Notebooks of Leonoardo da Vinci
II: Linear Perspective.
. . .
46
Of the line.
47,
48,
49
The nature of the outline.
50
Definition of Perspective.
51
Experimental proof of the existence of the pyramid of sight.
52,
53,
54
The relations of the distance points to the vanishing point.
55,
56
How to measure the pyramid of vision.
57
The Production of pyramid of Vision.
58,
59,
60,
61,
62,
63,
64
Proof by experiment.
65,
66
General conclusions.
67
That the contrary is impossible.
68
A parallel case.
69
The function of the eye as explained by the camera obscura.
70,
71
The practice of perspective.
72,
73
Refraction of the rays falling upon the eye.
74,
75
The inversion of the images.
76
The intersection of the rays.
77,
78,
79,
80,
81,
82
Demomstration of perspective by means of a vertical glass plane.
83,
84,
85
The angle of sight varies with the distance.
86
. . .