Conversation

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