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- Newsgroups: sci.physics
- Path: sparky!uunet!haven.umd.edu!darwin.sura.net!sgiblab!newsun!dseeman
- From: dseeman@novell.com (Daniel Seeman)
- Subject: Re: Home made monopoles
- Message-ID: <1993Jan25.171223.5051@novell.com>
- Sender: news@novell.com (The Netnews Manager)
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- Organization: Novell Inc., San Jose, Califonia
- References: <1jr3uiINNcjk@mirror.digex.com>
- Date: Mon, 25 Jan 1993 17:12:23 GMT
- Lines: 30
-
- In article <1jr3uiINNcjk@mirror.digex.com> bdoa@digex.digex.com (Barry Adams) writes:
- >
- >
- > Home made magnetic monopoles
- > ============================
- >
- > Contrary to popular belief , magnetic monopoles exist and are easy to
- >make . Take a Steel hemisphere and cut a concentric hemisphere cut of the
- >middle , now magnetize the hemisphere such that the domains of the object
- >are aligned with the north (south) pole pointing outwards. Now stick two of
- >the hemispheres together forming a sphere (glue strong enough to resist
- >the magnetic repulsion of the hemispheres is required) you now have your
- >magnetic monopole :-) , since any observer will see the object having a north
- >pole only (unless they cut it open).
- > Of course the configuration is unstable and the domains will slowly try
- >to rearrange themselves to a more stable state. And the magnetic force still
- >decays like a dipole. Such objects might to useful as frictionless bearings.
- >
- >Barry Adams
- >
- >
- In this experiment, we are to assume that what we cannot diretly "see (ie. the
- inside of the sphere)" does not affect the problem. Just because we "know" the
- South Pole exists in the volume cavity inside doesn't mean we can actually
- "see" it. Hmmmm, it seems a bit like an illusion to me (smoke and mirrors to
- be sure) but the application may be useful. The application sure does satisfy
- the apparent identifying criterion (compass always points one way near the
- monopole). I would like to hear other opinions (experiences) with this idea.
-
- dks.
-