Re: pinhole Re: Science Fair Ideas

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From: Paul Doherty (pauld@exploratorium.edu)
Date: Fri Nov 05 2004 - 15:50:27 PST 

Message-Id: <l0311071fbdb1c15bcd76@[192.168.112.30]>
Date: Fri, 5 Nov 2004 15:50:27 -0800
From: Paul Doherty <pauld@exploratorium.edu>
Subject: Re: pinhole Re: Science Fair Ideas

Hi Charlie

How about studying a non-linear magnet oscillator.

Take two iidentical magnets.

place them on a rough surface one on top of the other,

Pull the top mmaggnet to the side, it will rest in the air at an angle.

tap iit to start it oscillating.

Measure the period as a function of many things, amplitude, distance
between magnets, etc.

Here's a start
http://www.exo.net/~pauld/summer_institute/summer_day16magnetism/MagneticOscilla
tors/MagneticOscillators.html

Paul D

>I feel odd asking but I need some topic ideas for a boy who wnats to do a
>physics based project in the science fair. He said something about
>wanting to do a pendulum-based project but I feel like all the equations
>are known so why do a project on something so well described already. Any
>ideas?
>
>Charlie Bissell
>
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