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
Which Medical Device Gerrand and business partner Steve Walmsley. The site incorporates content from the Which Interventional Device website that Dr. Haslam founded in 2007. Which Medical Device currently covers devices in the fields of Interventional Radiology, Cardiology, Orthopaedics and Anaesthesia and Critical care. Which Medical Device Which Medical Device is a review site for medical devices with reviews, medical device news and videos of medical procedures. Users can rate and review medical devices listed on the website, or suggest devices for inclusion and review. The website also publishes device reviews from an editorial team and encourages users to submit detailed reviews. Device