Tom Allaway wrote:
To all, but especially Stephen, Doug and David:--
I do believe I've got it! The demonstration experiment involved, in my case, a small kitchen device similar to a salad spinner, containing a rotating perforated plastic tub. When spun under a flourescent light, it showed a clear "wagon wheel effect" (i.e., the temporary appearance and reverse rotation of the perforations during deceleration). I took it outside, and there was no effect to be observed. The crucial test: with my only source being daylight, I applied to my skull a vibratory stimulus, in the form of the business end of an electric toothbrush (minus the brush part) pressed against my chin. Violets! There was the wagon wheel effect! Q.E.D.
Let's hear it for empiricism.
--------------------------------------------------------------- Kenneth M. Steele, Ph.D. [EMAIL PROTECTED] Department of Psychology http://www.psych.appstate.edu Appalachian State University Boone, NC 28608 USA ---------------------------------------------------------------
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