Discovery of X-ray

2019-01-04

Discovery of X-ray

Wilhelm Röntgen

One day, in 1895, Röntgen was in his lab, working on his Crookes Tube. There are several different accounts of what happened that day, but most agree that while an electric current was flowing through the tube, Röntgen suddenly noticed that a board which was covered with Phosphorus and placed a few feet behind him — started to glow. Intrigued, Röntgen covered the tube with thick, black cardboard, blocking any trace of the faint glow emitted by the tube — but still, the phosphorus covered board continued to glow, even with the Crookes Tube completely covered up.