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when toggle format what by license comment
Jun 8, 2012 at 11:50 comment added anna v Nice answer, but maybe you should add a paragraph for why the momentum of a free particle is not quantized, for completeness in the answer.
Jun 7, 2012 at 13:02 history edited Steve Byrnes CC BY-SA 3.0
clarify: eigenvalues of Sz not Sz itself
Jun 7, 2012 at 12:57 history answered Steve Byrnes CC BY-SA 3.0