AWhat changed
Schwinger reports a finite radiative correction to the electron spin magnetic moment after expressing electrodynamic interactions in terms of measured mass and charge, and compares it with contemporary atomic measurements.
Scientific scope
Schwinger reports a finite radiative correction to the electron spin magnetic moment after expressing electrodynamic interactions in terms of measured mass and charge, and compares it with contemporary atomic measurements. Exact 1948 Physical Review short communication, beginning on printed 416 and continuing 417; original letter text/footnotes read on both PDF pages. Written 30 Dec 1947, published 15 Feb 1948. Weak matter-radiation interaction and a perturbative correction expressed using measured mass/charge; external magnetic-field application, not a nonperturbative/all-energy theorem. The selected text reports a fractional additional moment of about 0.001162. This account does not independently certify the exact symbolic coefficient or reproduce the complete calculation. Hyperfine and sodium/gallium comparisons are the author's use of earlier experimental results, not WRS remeasurements. Detailed theory explicitly in preparation; no full derivation/all-orders renormalizability proof, modern precision anomaly calculation, completed Lamb-shift theory or general scattering audit admitted. Adjacent letters on Ca 45 and silver, their figures/acknowledgments, are excluded. no experimental or independent scientific certification.
Evidence
Source-linked, scoped account of the original work. The published scope states the scientific assumptions and remaining verification limits. WRS has not independently certified the full proof, experimental result or system benchmark.
Contributors
- Julian Schwinger · SCIENCE: Original source-listed scientific author of this scoped work; byline does not determine effort fractions.
- Schwinger, On Quantum-Electrodynamics and the Magnetic Moment of the Electron, Phys. Rev.73,416(1948), original short letter
- APS publication record for Schwinger magnetic-moment letter
Provisional WRS assessment, edition 2026-10-16.1. Independent expert calibration is pending. This grade does not certify correctness or assign ownership.
Full scientific record · Browse contribution grades · Request a correction