Message no. 1

From:	Mike Elkins <MikeE@*********.com>
Subject:	Parallax was: Re: Cybereyes
Date:	Fri, 28 Jun 1996 09:05:16 -0500

Roboert Watkins wrote
" parallax >(fancy words meaning they guess how fast you're going, and how
close you >are, by looking at how big you appear to be, compared to just
before). "
Piatro wrote:
"I thought parallax dealt with the vifferent views of an object you vet with
recievers
that have some space between them. Each eye provides a slightly different
picture, which the brain uses to produce our 3D image of hte world around us."

I write:
Piatro is right, that is what parallax means. Robert Watkins is right that bug eyes
rely on size, zooming etc. to detect distances. BTW parallax is actually useful in
human depth perception only out to ten or fifteen feet. After that, you rely on
other cues.

Double-Domed Mike