“ A body in shadow situated between the light and the eye can never display its illuminated portion unless the eye can see the whole of the primary light. ”
Leonardo da Vinci, The Notebooks of Leonardo Da Vinci (1478 – 1519). copy citation
| Author | Leonardo da Vinci |
|---|---|
| Source | The Notebooks of Leonardo Da Vinci |
| Topic | shadow light |
| Date | 1478 – 1519 |
| Language | English |
| Reference | |
| Note | Translated by Jean Paul Richter in 1888 |
| Weblink | http://www.gutenberg.org/cache/epub/5000/pg5000-images.html |
Context
“There is no explanation of it beyond the one line written under it.]
142.
Why the 2 lights one on each side of a body having two pyramidal sides of an obtuse apex leave it devoid of shadow.
[Footnote: The sketch illustrating this is on Plate XLI No 1.]
143.
A body in shadow situated between the light and the eye can never display its illuminated portion unless the eye can see the whole of the primary light.
[Footnote: A stands for corpo (body) , B for lume (light) .]
144.
The eye which looks (at a spot) half way between the shadow and the light which surrounds the body in shadow will see that the deepest shadows on that body will meet the eye at equal angles, that is at the same angle as that of sight.”
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