How did X-rays come about?

Answer 1

X-rays were discovered by Wilhelm Roentgen, a German physicist, in November of 1895, roughly. He was testing the properties of cathode tubes when he noticed that a bench about three feet away was emitting a strange glow. He guessed that the tube was emitting energy beams that penetrated the heavy black paper he had secured around the tube, were traveling at least as far as the bench, and reacting with the metal the bench was made of, creating the strange glow.