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Intrinsic quantum angular momentum classified by representations of the rotation or Poincaré symmetry groups.
wp-physics-spinnlab-physics-spintong-quantumpdg-rppEach relation below ends at this concept.
This is an authored directed relation from the source endpoint to the target endpoint.
Spin is intrinsic quantum angular momentum associated with symmetry representations.
The target is a member or subtype of the broader source class.
wp-physics-spinnlab-physics-spinwp-physics-angular_momentumnlab-physics-angular_momentumThis is an authored directed relation from the source endpoint to the target endpoint.
The anomalous Zeeman patterns were a major empirical clue that orbital angular momentum alone was insufficient and helped motivate the introduction of electron spin.
The source experiment, observation, anomaly, or problem materially motivated the development, revision, or acceptance of the target concept. Historical influence is not logical derivation; the edge detail states the documented role and avoids retrospective origin myths.
wp-physics-zeeman_effectnobel-zeemannist-atomic-spectrum-historyThis is an authored directed relation from the source endpoint to the target endpoint.
The later reinterpretation of the silver-atom splitting made the experiment a central empirical motivation and illustration for intrinsic spin.
The source experiment, observation, anomaly, or problem materially motivated the development, revision, or acceptance of the target concept. Historical influence is not logical derivation; the edge detail states the documented role and avoids retrospective origin myths.
wp-physics-stern_gerlach_experimentaps-stern-gerlachEach relation below starts at this concept.
This is an authored directed relation from the source endpoint to the target endpoint.
Helicity is the projection of spin along momentum.
The target represents a state, property, observable, or state-dependent description associated with the source system or theory.
wp-physics-helicitypdg-rppwp-physics-spinnlab-physics-spinThis is an authored directed relation from the source endpoint to the target endpoint.
Spin one-half is a particular irreducible angular-momentum representation.
The target is a member or subtype of the broader source class.
wp-physics-spin_halfnlab-spinor_representationwp-physics-spinnlab-physics-spin