Re: Pinhole Digest #849 - 02/19/02

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From: Tom Woosnam (twoos@csus.com)
Date: Tue Feb 19 2002 - 07:31:22 PST 

Message-id: <fc.000f5b5a0030b7b73b9aca00a0dc5f3f.30b7e7@csus.com>
Date: Tue, 19 Feb 2002 07:31:22 -0800
Subject: Re: Pinhole Digest #849 - 02/19/02
From: "Tom Woosnam" <twoos@csus.com>

pinhole@exploratorium.edu writes:
> Putting the plastic bag over the
>smeared magnetic domain areas will make the 0s where the field is smeared
>go
>back down to a lower level as if the domain was not smeared and the 1s
>become
>more distinct.

Many thanks for the detailed reply Al. Could I trouble you to explain why
the plastic bag makes the 0s go down and 1s become more distinct?
i.e. how does the plastic decouple the magnetic circuit?

Thanks again,

Tom

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