59

The Production of pyramid of Vision.

The whole surface of opaque bodies displays its whole image in all the illuminated atmosphere which surrounds them on all sides.

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

58 * 60
I * III
Notebooks of Leonoardo da Vinci
II: Linear Perspective.
. . .
General remarks on perspective.
40,
41
The elements of perspective--Of the Point.
42,
43,
44,
45,
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
. . .