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spin-½
Sign in to savethumb|A single point in space can spin continuously without becoming tangled. Notice that after a 360° rotation, the spiral flips between clockwise and counterclockwise orientations. It returns to its original configuration after spinning a full 720°.
In the Vinony graph
Within Vinony's link graph, spin-½ is referenced by 118 other articles, and connects out to Euclidean vector, fermion and wave function.
Vinony files it under Quantum models and Rotation in three dimensions.
Its subject is documented across 8 Wikipedia language editions.
~11 min read
Encyclopedic overview
14 sectionsContents
- Stern–Gerlach experiment
- General properties
- Connection to the uncertainty principle
- Mathematical description
- Complex phase
- Non-relativistic quantum mechanics
- Observables
- Relativistic quantum mechanics
- Observables
- History
- See also
- Notes
- Further reading
- External links
thumb|A single point in space can spin continuously without becoming tangled. Notice that after a 360° rotation, the spiral flips between clockwise and counterclockwise orientations. It returns to its original configuration after spinning a full 720°.
In quantum mechanics, spin is an intrinsic property of all elementary particles. All known fermions, the particles that constitute ordinary matter, have a spin of . The spin number describes how many symmetrical facets a particle has in one full rotation; a spin of means that the particle must be rotated by two full turns (through 720°) before it has the same configuration as when it started.
Excerpted from Wikipedia’s “spin-½” article, available under the CC BY-SA 4.0 licence.