Nikola Tesla film in his laboratory in previous experiments (later identified as ""Roentgen rays"" or "X-Rays"). His early experiments were with Crookes tubes, a cold cathode electrical discharge tube. Tesla may have inadvertently captured an X-ray image—predating, by a few weeks, Wilhelm Röntgen's December 1895 announcement of the discovery of X-rays when he tried to photograph Mark Twain illuminated by a Geissler tube, an earlier type of gas discharge tube. The only thing captured in the image was the metal locking screw on the camera lens. In March 1896, after hearing of Wilhelm Röntgen's discovery of X-ray and X-ray imaging (radiography), Tesla
Hugo Wilhelm von Ziemssen Hugo Wilhelm von Ziemssen Hugo (Wilhelm) von Ziemssen (13 December 1829 – 21 January 1902) was a German physician, born in Greifswald. He studied medicine at the universities of Greifswald, Berlin, and Würzburg. In 1863 he was called to the University of Erlangen as a professor of pathology and therapy as well as the director of the medical clinic. In 1874 he relocated to Munich as a professor and director of the general hospital. He made advances in electrotherapeutics, conducted research on cold-water treatment for typhoid fever and lung inflammation, and became an authority on diseases of the larynx and