Professor Vining (bluegodjanus) wrote in physics,
Professor Vining
bluegodjanus
physics

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Understanding spin

There's a bit of particle spin that I'm having trouble figuring out.

Fermions (that is, spin 1/2 particles) must be rotated 720 degrees before returning to an identical state. I don't see how this makes sense. What's the explanation for this phenomenon?
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