Re: Cat's eyes

[brian whatcott <inet@INTELLISYS.NET>]

> At 05:07 PM 9/3/00 -0400, Ludwik Kowalski wrote:
>
> > Sorry I missed this part, a lens with a flat mirror in the focal
> > plane (whose normal is parallel to the lens axis) does indeed
> > send the beam of parallel light backward.
At 19:23 9/3/00 -0400, John D responded:
> OK.

Not OK. The photosensitive surface is not planar.

> Hint:  the mirror is in the FOCAL PLANE.

No it isn't. See above.


brian whatcott <inet@intellisys.net>  Altus OK
                Eureka!