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- Newsgroups: sci.physics
- Path: sparky!uunet!snorkelwacker.mit.edu!galois!riesz!jbaez
- From: jbaez@riesz.mit.edu (John C. Baez)
- Subject: Ferromagnetism and the Clash of Cultures
- Message-ID: <1992Nov16.222739.9417@galois.mit.edu>
- Sender: news@galois.mit.edu
- Nntp-Posting-Host: riesz
- Organization: MIT Department of Mathematics, Cambridge, MA
- Date: Mon, 16 Nov 92 22:27:39 GMT
- Lines: 28
-
- In article alison@wsrcc.com (Alison Chaiken) writes:
-
- >By the way, Dr. Baez, I'm a solid-state experimentalist, not a
- >theorist. I have to be careful because real theorists are watching.
-
- Hmm, maybe that explains why I can't understand most of what you are
- saying about ferromagnetism. That's not meant as a flame! -- just a
- comment on the frustrations of trying to communicate across culture
- gaps. You are using terminology I think I understand but in ways that
- are completely mysterious to me. E.g., "a gap opens in the top of the
- spectrum." I know what a spectrum is and what a gap in one is, but
- thinking of the spectrum as a dynamical variable subject to change
- ("opens") is foreign to me (perhaps the implicit reference to time in
- "opens" is somewhat metaphorical?). Also, a gap at the *top* of a
- spectrum makes as much sense to me as saying "there's a hole in this
- hole" - to me the top of the spectrum is where the spectrum leaves
- off, so what would a "gap" there be?
-
- Also, I understand the concept of exchange energy but don't get how it
- is less when spins are lined up for ferromagnets.
-
- Sigh. I'm sure I am equally incomprehensible to most experimentalists.
- Or is that physicists who specialize in "fundamental" physics don't
- always learn enough about solid state to talk about it in a
- rough-and-ready sort of way? Maybe this has something to do with why
- there's not much talk about solid state on sci.physics?
-
-
-