On Fri, 07 May 2004 21:44:45 +1000 Andrew Fildes <afildes@xxxxxxxxxxxxxx> wrote: > > On 07/05/2004, at 5:26 AM, Brian Chandler wrote: > > > > I have bad news for you. I surmise that your optics textbook was > > written > > by Plato, and unfortunately some of his ideas have been found to be > > wrong. > > What?! Name three! > AndrewF > http://www.pbase.com/afildes Hmm. Well, I found Plato's "Postulates" for Optics on p. 195 of Richard Gregory's excellent tome "Mind in Science". Here are the first three: 1. The rays emitted by the eye travel in a straight line. 2. The figure enclosed by visual rays is a cone which has its apex at the eye and its base at the edge of the object looked at. 3. Objects on which the visual rays fall, are seen. Nuff sed? Brian Chandler ---------------- Jigsaw puzzles from Japan http://imaginatorium.org/shop/ imaginatorium@xxxxxxxxxxxxx
