Statements (23)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
physical phenomenon
|
| gptkbp:alsoKnownAs |
alpha
|
| gptkbp:appearsIn |
atomic physics
quantum electrodynamics fine structure splitting |
| gptkbp:category |
fundamental constant
|
| gptkbp:CODATA2022 |
0.0072973525693(11)
|
| gptkbp:describes |
strength of electromagnetic interaction
|
| gptkbp:dimensions |
true
|
| gptkbp:form |
α = e²/(4πε₀ħc)
|
| gptkbp:hasUnit |
dimensionless
|
| https://www.w3.org/2000/01/rdf-schema#label |
fine structure constant
|
| gptkbp:introduced |
gptkb:Arnold_Sommerfeld
|
| gptkbp:relatedTo |
gptkb:quantum_field_theory
gptkb:electromagnetic_force hydrogen atom spectrum standard model of particle physics atomic energy levels |
| gptkbp:symbol |
α
|
| gptkbp:valuation |
0.0072973525693
approximately 1/137 |
| gptkbp:bfsParent |
gptkb:Quantum_Electrodynamics
|
| gptkbp:bfsLayer |
5
|