230

On indistinctness at short distances.

OF THE EYE.

The edges of an object placed in front of the pupil of the eye will be less distinct in proportion as they are closer to the eye. This is shown by the edge of the object n placed in front of the pupil d; in looking at this edge the pupil also sees all the space a c which is beyond the edge; and the images the eye receives from that space are mingled with the images of the edge, so that one image confuses the other, and this confusion hinders the pupil from distinguishing the edge.

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

III * V
Notebooks of Leonoardo da Vinci
IV: Perspective of Disappearance.
. . .
Definition.
222,
223
An illustration by experiment.
224
A guiding rule.
225
An experiment.
226
On indistinctness at short distances.
227,
228,
229,
230,
231
On indistinctness at great distances.
232,
233,
234
disappearance.
235,
236,
237,
238,
239
objects.
240,
241,
242,
243,
244,
245,
246,
247,
248,
249
Propositions on perspective of disappearance from MS. C..
250
. . .