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- Newsgroups: sci.physics
- Path: sparky!uunet!enterpoop.mit.edu!galois!riesz!jbaez
- From: jbaez@riesz.mit.edu (John C. Baez)
- Subject: Re: Home made monopoles
- Message-ID: <1993Jan25.000704.12296@galois.mit.edu>
- Sender: news@galois.mit.edu
- Nntp-Posting-Host: riesz
- Organization: MIT Department of Mathematics, Cambridge, MA
- References: <1jr3uiINNcjk@mirror.digex.com>
- Date: Mon, 25 Jan 93 00:07:04 GMT
- Lines: 19
-
- 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).
-
- Cute - I hope you are joking and, more importantly, that everyone realizes
- this! I myself am usually scrupulously honest in pointing out that all my
- designs for antigravity machines etc. are flawed and that the real point
- is to find the error.
-