On November 8th, 1895, German scientist Wilhelm Roentgen was conducting experiments in his laboratory on the effects of cathode rays. Specifically he was observing the effect of passing an electrical discharge through gases at a low pressure. While doing so, Roentgen noticed something that earlier studies had not picked up. While passing current through the cathode ray, rays were given off that passed through every day materials such as wood, paper and aluminium. Roentgen further observed that a surface that he had coated with barium platinocyanide and which was placed outside of the cathode discharge tube would give off light despite the fact that it was hidden from the light of the discharge. The conclusions that Roentgen came to were ground breaking: a previously unknown type of radiation had passed through the air and lit up the screen.
Roentgens discovery was to open up an exciting field for doctors. It was now possible to use this new form of radiation in the study of the hum