PSN-L Email List Message

Subject: Re: Has Any one tried this kind of pendulum ?
From: =?ISO-8859-1?Q?J=F3n_Fr=EDmann?= jonfr@.........
Date: Sat, 08 Aug 2009 23:16:27 +0000


I am thinking of building one at school this winter. As I am going to
study electronics this winter, this might be a good project to do.

J=F3n Fr=EDmann.

On f=F6s, 2009-08-07 at 12:54 -0700, Geoffrey wrote:
> Hello PSN:
> I was just looking at this page
> It seems to show a horizontal pendulum at the top.
> What I was wondering is if you could build a
> pendulum with a rod and mass maybe 18 inches
> below the pivot or more then extend the rod one inch
> ABOVE the fulcrum of crossed rods bearing
> then attach maybe a circular super magnet
> then on either side of that magnet attached to
> the pendulum attach two opposing super magnets
> at some adjustable distance either side to
> act as a magnetic spring. If you do this
> you may be able to totally eliminate the mechanical
> spring and the ability to adjust the opposing magnets
> will also adjust its period or whatever.
> It will not be linear but may allow for greater
> dynamic range due to its non linear
> magnetic characteristics ??
> I do not have the ability to try this out
> but maybe one or more of you already have???
> Thoughts ???
> Regards;
> geoff
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