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- Path: sparky!uunet!dziuxsolim.rutgers.edu!ruhets.rutgers.edu!bweiner
- From: bweiner@ruhets.rutgers.edu (Benjamin Weiner)
- Newsgroups: sci.physics
- Subject: Re: what is demonstrable?
- Message-ID: <Jan.28.18.37.56.1993.24838@ruhets.rutgers.edu>
- Date: 28 Jan 93 23:37:56 GMT
- References: <C1GEpL.4H7@well.sf.ca.us> <C1H02x.K38@undergrad.math.waterloo.edu> <1993Jan27.035336.6911@Princeton.EDU>
- Organization: Rutgers Univ., New Brunswick, N.J.
- Lines: 44
-
- I've only posted this to sci.physics to cut down on netwaste.
-
- rdnelson@phoenix.Princeton.EDU (Roger D. Nelson) writes:
- > relipper@napier.uwaterloo.ca (Eric Lippert) writes:
- >[snip]
-
- >>Seriously now, I really do not understand psychic advocates. The real
- >>world is a wondrously interesting place! Weirdnesses like black holes,
- >>einstein-rosen wormholes, quasars, quantum wells, point particles,
- >>superconductors, etc, etc, etc are bizarre and interesting, and best of
- >>all, demonstrable!
-
- >I don't understand psychic advocates either, and by all means agree that the
- >real world is interesting. But I do wonder at your apparent conviction that
- >the above list is "demonstrable!"
-
- >Superconductors, yes, but the rest of the list? In what way would you
- >propose to demonstrate a black hole, or an "einstein-rosen wormhole" ...
- > (stuff on how PK is more demonstrable than these things deleted)
-
- Maybe, but here is an example of the too-narrow scope of sci.physics.
- We spend all this time talking crap about black holes et al, and you
- wind up mischaracterizing two of the elements on his list. First the
- less painful one: "quasar" in fact originally stood for "quasi-stellar
- radio source." There are these things on the sky; we can't go there,
- but they do exist.
-
- Okay, now the one that really bothers me. "Quantum wells" are a neat,
- VERY well-documented, Hot Topic in solid-state physics. If you have
- access to a literature searcher, search for "quantum" + "well." I found
- 1,939 items, and my database only covers items published since
- September 1988. Or you could just pick up a random issue of Phys Rev
- Letters, Phys Rev B, or Applied Physics Letters. I just went to the
- library and looked at the latest issue of Appl Phys Lett, and there
- are four papers on quantum well phenomena.
-
- Basically they're just tiny structures in semiconductors, but there
- are all sorts of fun things that happen in them, e.g. lasing. What
- gets me is that because it's solid-state physics, it's ignored. I'd
- rather hear about mesoscopic quantum systems than about event horizons
- or EPR paradoxes for the Nth time. (No offense to those who discuss
- it, but you gotta admit these topics tend to reoccur painfully often,
- with frequency 1/semester.) I have to point out that this is not
- special pleading: I'm doing astrophysics. I get enough of cosmology
- already, that's why I want to hear something else.
-