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Started by Paul Hickman
Mon, 09 May 1994 11:43
Re: Pendulum
Author: Paul Hickman
Date: Mon, 09 May 1994 11:43
Date: Mon, 09 May 1994 11:43
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1444 bytes
-Gregory R. Snow of Smithfield High School wrote I recently saw a demonstration about a strang effect of pendulums when viewed through a filter. If you take a piece of red plastic (plastic wrap works fine) and place it in front of one eye, leave the other eye uncovered, and view a swinging pendulum. It appears that the pendulum is moving in an eliptical shape instead of the expected side to side motion. The person giving the demo could not explain why this happens. This points out a danger of demonstrations. If you do a demo you should be prepared to explain "why" The effect is in the eye/brain connection and will work with any filter even grey. Well there are two hints! Paul Paul Hickman Physics Belmont HS
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