Keywords: Franck-Hertz en.svg Dependence of the anode current upon the voltage in the 1914 Franck-Hertz experiment The tube temperature was about 115 C <ref> cite journal J Franck Hertz G à ber Zusammenstöße zwischen Elektronen und Molekülen des Quecksilberdampfes und die Ionisierungsspannung desselben Verhandlungen der Deutschen Physikalischen Gesellschaft 1914 16 457 “467 A translation of this paper is given in cite book Boorse Henry A Motz Lloyd The World of the Atom 1 46 The Quantum Theory is Tested 766-778 Basic Books 1966 534667 </ref> Wikipedia contributor Ahellwig Redrawing of a figure from the original 1914 paper of Franck and Hertz Measured data points in the original graph have been removed See cite web Auszüge aus der Originalarbeit von Franck und Hertz 1914 http //leifi physik uni-muenchen de/web_ph12/originalarbeiten/franckhertz/original htm http //web archive org/web/20091130224501/http //leifi physik uni-muenchen de/web_ph12/originalarbeiten/franckhertz/original htm 2009-11-30 Franck also used this figure in his Nobel Lecture which is available in English translation at cite book Nobel Lectures Physics 1922-1941 Elsevier Transformation of Kinetic Energy of Free Electrons into Excitation Energy of Atoms by Impacts Franck James 1965 http //www nobelprize org/nobel_prizes/physics/laureates/1925/franck-lecture pdf 2006 reflist Experiment of Franck and Hertz |