1 5 8 D O C U M E N T 1 5 3 M A R C H 1 9 2 8 152. Review of Émile Meyerson, La déduction relativiste [Einstein 1928e] Published before 1 March 1928 In: Revue philosophique de la France et de l’étranger, 105, nos. 3–4 (January–June 1928): 161–166. [See Doc. 6 in this volume for English translation of original German text.] 153. From Emil Rupp Göttingen, Bunsenstr. 9, 8 March 1928 Dear Professor, Having completed my experiments on electron diffraction in very thin foils during the passage of slow electrons, I would like to send you copies of my result- ing images.[1] From their analysis, I find ,[2] from 1.07 de- creasing to 1 with increasing beam velocity V. Setting ,[3] one finds for Ag,[4] nearly independently of V. I believe that Davisson’s assign- ment of the lattice parameters is not correct [5] if the assignment is made differently, then one finds there, also. Very respectfully, yours truly, E. Rupp Vak Kristall n = n 1 n V V E ----------------- = E +16 Volt n 1
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