Pendulums seen through colored filters.

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#1490

From: Gary Hemminger
Date: Fri, 20 May 1994 13:53

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The reason for the unsual appearance of the pendulum is probably due to a
slight time delay in the processing of the information from the retina which
receives the filtered light.   There is a demo at the science museum in Queens
N.Y. which makes use of this effect, but there a grey filter is used.  Shadows
on a wall appear to move in the third dimension as a result.     hope you got
my subscription message.

Gary Hemminger       Hemminge@pilot.njin.net

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From: Gary Hemminger <hemminge@PILOT.NJIN.NET>
Subject: Pendulums seen through colored filters.
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