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- Newsgroups: rec.motorcycles
- Path: sparky!uunet!digex.com!intercon!udel!gatech!rpi!newsserver.pixel.kodak.com!laidbak!jeq
- From: jeq@i88.isc.com (Jonathan E. Quist)
- Subject: Re: Tank Bag Monopole Magnets
- Message-ID: <1993Jan27.162951.28206@i88.isc.com>
- Sender: usenet@i88.isc.com (Usenet News)
- Nntp-Posting-Host: birdie.i88.isc.com
- Organization: Lachman Technology, Incorporated, Naperville, IL
- References: <1993Jan25.173203.28000@research.nj.nec.com> <1993Jan26.175120.556@pages.com>
- Date: Wed, 27 Jan 1993 16:29:51 GMT
- Lines: 46
-
- In article <1993Jan26.175120.556@pages.com> bigdog!jon (Jon Wright) writes:
- >Chris BeHanna writes
- >> In article <C1DJtA.EuM@vuse.vanderbilt.edu> dab@vuse.vanderbilt.edu (Flash)
- >writes:
- >> >In article <1993Jan22.212815.461@pages.com> bigdog!jon (Jon Wright) writes:
- >> >>I asked somebody at MotoPort about this and they said the ceramic magnets,
- >> >>which were more powerful than the previous metalic ones, were also
- >polarized or
- >> >>uni-directional or something, which prevented screwing up your disks and
- >cards.
- >> > ^^^^^^^^^^^^^^^
- >> There is No Such Thing as a Magnetic Monopole.
- >>
- >> >>I guess the next obvious question is, "How do you know if they're polarized
- >or
- >> >>not?"
- >>
- >> All magnets have polarity.
- >>
- >> Was a fun article, though Flash.
- >
- >Since I last posted this message, I've been asking around and a couple of other
- >dealers of other packs also insist they have these wierd magnets. Sharp,
- >Lockhart, and Eclipse, to name three. I specifically asked why such-and-such a
- >bag is a good bag and the response was, "It's these magnets, dude."
- >
- >So, what gives? They may not be monopole, but enough semi-educated counter
- >jockeys seem to be on to something here.
-
-
- Simplicity itself, though the manufacturing technology may be a bit
- more involved.
-
- Instead of visualizing a big bar magnet, think of horseshoe magnet.
- The strongest field is located at the ends of the semi-loop. Now,
- add a little solid geometry, and either make horseshoe magnet with
- little depth (open end to closed end) but very wide, or wrap it into
- a torus. You wind up with a relatively flat magnet with most of the
- field emanating from one side. Add to that an iron half-jacket, if
- required, and you're pretty safe.
-
- --
- Jonathan E. Quist Lachman Technology, Incorporated
- jeq@i88.isc.com '71 CL450-K4 "Gleep", DoD #094 Naperville, IL
- __ There's nothing quite like the pitter-patter of little feet,
- \/ followed by the words "Daddy! Yay!"
-