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- Path: sparky!uunet!cs.utexas.edu!hellgate.utah.edu!dog.ee.lbl.gov!csa3.lbl.gov!sichase
- From: sichase@csa3.lbl.gov (SCOTT I CHASE)
- Newsgroups: sci.physics
- Subject: Re: quantization of angular momentum
- Date: 2 Sep 92 20:50:09 GMT
- Organization: Lawrence Berkeley Laboratory - Berkeley, CA, USA
- Lines: 27
- Distribution: na
- Message-ID: <25959@dog.ee.lbl.gov>
- References: <TK.92Aug31202517@wheat-chex.ai.mit.edu> <25903@dog.ee.lbl.gov> <mcirvin.715392893@husc8> <25949@dog.ee.lbl.gov>
- Reply-To: sichase@csa3.lbl.gov
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-
- In article <25949@dog.ee.lbl.gov>, sichase@csa3.lbl.gov (SCOTT I CHASE) writes...
- >In article <mcirvin.715392893@husc8>, mcirvin@husc8.harvard.edu (Mcirvin) writes...
- >>>In <1992Sep1.203830.2793@galois.mit.edu> jbaez@riesz.mit.edu (John C. Baez) writes:
- >>
- >>>>Ouch! L is quantized under all circumstances. Its eigenvalues are
- >>>>half-integer multiples of hbar, even for free particles.
- >>
- >>Angular momentum, though, always has discrete eigenvalues.
- >
- >Angular momentum is not a good quantum number for a plane wave. So it is not
- >correct to say that a plane wave has quantized angular momentum. John
- >is correct that L only has half-integer eigenvalues (in units of h-bar), but
- >that is not enough for me to say that a plane wave has quantized L.
-
- Before I get heavily flamed, let me add that I know that every time
- you try to measure L for a plane wave you will in fact get a half-integral
- value. I therefore retract anything which I have written on the issue
- which would lead anyone to suggest that I indend to defend the wierd
- position I seem to have taken on this issue.
-
- -Scott
- --------------------
- Scott I. Chase "The question seems to be of such a character
- SICHASE@CSA2.LBL.GOV that if I should come to life after my death
- and some mathematician were to tell me that it
- had been definitely settled, I think I would
- immediately drop dead again." - Vandiver
-