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The opening of Weyl's paper "Gravitation and the Electron." The first part reads: "The Problem. –– The translation of Dirac's theory of the electron into general relativity is not only of formal significance, for, as we know, the Dirac equations applied to an electron in a spherically symmetric electrostatic field yield in addition to the correct energy level those – or rather negative of those – of an "electron" with opposite charge but the same mass..."

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The opening of Weyl's paper "Gravitation and the Electron." The first part reads: "The Problem. –– The translation of Dirac's theory of the electron into general relativity is not only of formal significance, for, as we know, the Dirac equations applied to an electron in a spherically symmetric electrostatic field yield in addition to the correct energy level those – or rather negative of those – of an "electron" with opposite charge but the same mass..."
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Robert McNees (mcnees@mastodon.social)'s status on Friday, 08-Mar-2024 15:21:07 UTC Robert McNees

Hermann Weyl submitted "Gravitation and the electron" #OTD in 1929, a follow-up to his 1928 paper "Gruppentheorie und Quantenmechanik." It contains the first use of the now-ubiquitous physics term "gauge invariance" in the English language.
Open Access: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC522457/pdf/pnas01017-0027.pdf

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