58

The Production of pyramid of Vision.

PERSPECTIVE.

The instant the atmosphere is illuminated it will be filled with an infinite number of images which are produced by the various bodies and colours assembled in it. And the eye is the target, a loadstone, of these images.

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

57 * 59
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
. . .