This is a new translation of Descartes's well-known 1637 essay introducing the three treatises Meteors, Dioptrics
, and Geometry.
A closer examination of his analysis of sensory perception in the Sixth Replies and his treatment of sensory processing in the Dioptrics
and Treatise on Man tells a different story.
Secondly, I am working on the history of dioptrics
, the geometry of the projections, as well as on the theory of conics.
For a defense of the view that they are nonrepresentational, see Ann Wilbur MacKenzie, "Descartes on Sensory Representation: A Study of the Dioptrics
," Canadian Journal of the History of Philosophy, supp.
The retina underlies a smooth, transparent cornea devoid of any dioptrics
. The massive array of photosensitive membrane in the mosaic of photoreceptor R-segments sits on top of a layer of white diffusing cells that presumably reflect any light that is not absorbed in the first pass through the rhabdom back into the rhabdom [ILLUSTRATION FOR FIGURE 7D OMITTED].