{"collection":"aor","html_url":"https://unchartedknowledge.5gfusion.net/browse/aor/dv/0029.htm","path":"aor/dv/0029.htm","source_url":"https://sacred-texts.com/aor/dv/0029.htm","text":"The Da Vinci Notebooks\nLet the object in relief t be seen by both eyes; if you will look at the object with the right eye m, keeping the left eye n shut, the object will appear, or fill up the space, at a; and if you shut the right eye and open the left, the object (will occupy the) space b; and if you open both eyes, the object will no longer appear at a or b, but at e, r, f. Why will not a picture seen by both eyes produce the effect of relief, as [real] relief does when seen by both eyes; and why should a picture seen with one eye give the same effect of relief as real relief would under the same conditions of light and shade?\n21:21 : In the sketch, m is the left eye and n the right, while the text reverses this lettering. We must therefore suppose that the face in which the eyes m and n are placed is opposite to the spectator.","title":"Vol. I: I. Prolegomena and General Introduction to the Book on Painting: 29.","type":"page"}