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Date: | Mon, 30 Jan 2006 10:22:38 -0800 |
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ISEN-ASTC-L is a service of the Association of Science-Technology Centers
Incorporated, a worldwide network of science museums and related institutions.
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> We're creating some costume vests for an exhibit for young
>children. We've been thinking about using a couple of magnets to
>keep the front panels of the vests together (there are durability
>issues involved with other types of closures we considered--Velcro,
>snaps, buttons). Questions have been raised, however, about magnets
>interfering with pacemakers. I've seen magnets used in a variety of
>exhibits, so does anyone have any information on this?
We tried to research this question back in 2002 but weren't able to
find a very definitive answer. Here's what I said in reply to
someone on the ASTC list at that time:
At 4:17 PM -0700 6/9/03, Allan Ayres wrote:
>The best thing I could find was a statement somewhere that 10 gauss
>was the maximum field that anyone should be able to be exposed to
>unwittingly. I think I found that on a news site (cnn.com or some
>such), so I have little confidence that that figure represents
>anything more than someone's haphazard guess.
>
>Our approach has just been to make it plain that all the magnets on
>the floor are in fact magnets (on the assumption that people who
>need to avoid magnets will do so if they know about them), and to
>take steps to shield the stronger ones.
Please let us all know if you find out anything definitive... I'm
sure many of us would like to have a real answer to this question.
--
~~
Allan Ayres
Exhibit Developer
Lawrence Hall of Science
University of California, Berkeley
Berkeley, CA 94720-5200
[log in to unmask]
510-642-1254
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