Contribution of Wilhelm roentgen

Wilhelm Conrad Roentgen (1845 - 1923) discovered X rays, for which he received the first Nobel Prize for physics in 1901. He observed that barium platinocyanide crystals across the room fluoresced whenever he turned on a Crooke's, or cathode-ray discharge, tube, even when the tube was shielded by thin metal sheets. Roentgen correctly hypothesized that a previously unknown form of radiation of very short wavelength was involved, and that these X rays (a term he coined) caused the crystals to glow. He later demonstrated the metallurgical and medical use of X rays which later brough a revolution the medical science..