34

The comparative size of the image depends on the amount of light.

Why when the eye has just seen the light, does the half light look dark to it, and in the same way if it turns from the darkness the half light look very bright?

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

33 * 35

Notebooks of Leonoardo da Vinci

I: Prolegomena and General Introduction to the Book on Painting.

. . .

The plan of the book on Painting.

14,

15,

16,

The use of the book on Painting.

Necessity of theoretical knowledge.

19,

The function of the eye.

21,

22,

23,

Variability of the eye.

Differences of perception by one eye and by both eyes.

26,

27,

28,

The comparative size of the image depends on the amount of light.

30,

31,

32,

33,

34,

35,

36,

37,

38,