No one was initially more skeptical of the existence of X-rays than Wilhelm Roentgen — the man who discovered them. One day in late 1895, the German physicist was preparing to begin an ...

X-ray photograph taken by Wilhelm Roentgen of his wife's hand in December 1895.SSPL—Getty Images The way the story goes, one of the earliest X-ray photographs ever taken (at left here ...

A few days before Christmas 1895, German physicist Wilhelm Roentgen told his wife about a secret experiment. While studying the movement of electrons in something called a Crookes tube ...