History and the evolution of X-rays By artemynik Sep 1, 1875 William Crookes - Invents a Crookes Tube RecordTitle:William Crookes and the Quest for Absolute Vacuum in the 1870s (Academic Journal) Sep 1, 1895 1895, Wilhelm Conrad Röntgen - Discovers the X-rays William Rontgen Biography Jan 11, 1896 First use of X-rays under clinical conditions was by John Hall-Edwards in Birmingham Great Lives from History: Inventors & Inventions John Hall-Edwards in Birmingham, England, radiographed a needle stuck in the hand of an associate. Sep 8, 1904 John Ambrose Flemingohn Ambrose Fleming invented the thermionic diode, the first kind of a vacuum tube. Sir Ambrose Fleming Biography Sep 1, 1908 John Hall-Edwards had to have his left arm amputated owing to the spread of X-ray dermatitis Major John Hall-Edwards Biography Jan 1, 1920 Coolidge tubes, completely replaced the troublesome cold cathode tubes by about 1920 X-ray Wiki Page Jan 1, 1948 Paul Kirkpatrick invented the first X-ray microscope Paul Kirkpatrick biography Sep 1, 1972 Godfrey N. Hounsfield invented the first CT Scan Godfrey N. Hounsfield Biography Jul 23, 1999 The Chandra X-ray Observatory was launched allowing X-ray space exploration Chandra Observatory
