Zur Quantentheorie der Spektrallinien
Article
Formal Antecedent
Foundations and Logic
Citation
Arnold Sommerfeld. (1916). Zur Quantentheorie der Spektrallinien. Annalen der Physik. 51. pp. 1–94.
Why this reference is included
Sommerfeld’s 1916 Zur Quantentheorie der Spektrallinien, published in Annalen der Physik, is one of the program’s working technical references. Cited in Book IV (Categorical Microcosm), Part 1, Chapter The Fine-Structure Constant, where the program draws on it in the context of “Sommerfeld introduced α in 1916 to explain the small splittings in hydrogen’s spectral lines—the ``fine structure.’’ The constant determines the magnitude of relativistic and….”
Cited in
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Book IV — Categorical Microcosm Part 1Chapter The Fine-Structure Constant
Sommerfeld introduced α in 1916 to explain the small splittings in hydrogen's spectral lines—the ``fine structure.'' The constant determines the magnitude of relativistic and spin-orbit corrections: Δ E / E ∼ α^2