Table of the Permeability of Various Substances to Roentgen Rays
Josef Maria Eder · 1896

Photogravure, plate No. 5 from "Research on Photography with Röntgen Rays (Versuche über Photographie mittelst der Röntgen’schen Strahlen)"
Josef Maria Eder · 1896

Photogravure, plate No. 5 from "Research on Photography with Röntgen Rays (Versuche über Photographie mittelst der Röntgen’schen Strahlen)"