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Re: stoboscopic eyes

The eye has a refresh rate too. This is why movies, a sequence of
still pictures, can work. Maybe if you hit a rotation rate just a
little shorter than the refresh rate. . .? Ask a biologist and see
how well the periods match.


An idea for Tuesdays discussions at DAPT?

Looking at a ripple tank and introducing using a stobe to determine
frequency, the discussion went to seeing wagon wheels in movies seeming to
roll backwards. Students maintain that they have seen this in cars with
naked eye. I don't inderstand the mechanism of how that would happen, yet I
in retrospect, I think I have seen it, too. Any ideas?

Ken Fox

Paul J. Camp "The Beauty of the Universe
Assistant Professor of Physics consists not only of unity
Coastal Carolina University in variety but also of
Conway, SC 29528 variety in unity.
pjcamp@coastal.edu --Umberto Eco
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