Lassen sich Brechungsexponenten der Körper für Röntgenstrahlen experimentell ermitteln? (p. 86-88, Weil 104) WITH Bemerkung zu E. Gehrckes Notiz Über den Áther (p. 265, Weil 100) in Verhandlungen der Deutschen Physikalischen Gesellschaft, Jg. 20-21, 1918-19
Braunschweig: Druck und Vieweg. 1st Edition. FIRST EDITION (FULL VOLUME) OF THE PAPER IN WHICH EINSTEIN PROVIDES THE FIRST DESCRIPTION OF THE NATURE OF THE REFRACTIVE INDEX FOR X-RAYS, here clearly demonstrating that phase contrast effects are significant. “Inspired by the presence of fringes at the edges of objects in..... More