On Thu, 04 Nov 1999 08:23:49 -0500 (EST) Faith L Florer
<[EMAIL PROTECTED]> wrote:
> Does anyone here know why it is that the numbers on a digital clock (and
> some images on a television screen) appear to jiggle when a person is
> using an electric toothbrush?
>
> I was asked this question in cognition class.
>
Tell your student that the jiggling of the scene is due to
mechanical vibration of the eyeball due to spread of the
mechanical action of the toothbrush through the skull.
They can simulate this by looking at the clock, placing a finger
on the corner of the (partially-closed) eye and jiggling their
eyeball.
Ken
----------------------
Kenneth M. Steele [EMAIL PROTECTED]
Dept. of Psychology
Appalachian State University
Boone, NC 28608
USA
