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<ahref="https://plu.mx/plum/a/?bepress_url_id=https%3A%2F%2Fdigitalcommons.csbsju.edu%2Fphysics_pubs%2F84"data-popup="right"data-size="large"class="plumx-plum-print-popup"data-site="plum"data-hide-when-empty="true">The Franck-Hertz experiments, 1911-1914: Experimentalists in search of a theory. With an appendix, “On the history of our experiments on the energy exchange between slow electrons and atoms” by Gustav Hertz</a>
