1895-RAYS X-Wilhem Konrad Röntgen, Germany

Röntgen was making experiments with cathode ray tubes when he accidentally noticed that there was a radiation of uncertain origin who came not from the cathode and anode. Then discovered that the radiation was able to traverse the material bodies and named them rays x. perhaps in his century not I take great importance, but has transformed the lives of people especially in the field of diagnostic medicine (conventional radiology, mammography, computerized axial tomography), Crystallographic Studies and security at airports where is currently used.