Wilhelm Conrad Röntgen was a German physicist born in 1845 who is credited with the discovery of X-rays in 1895. While experimenting with cathode ray tubes, he observed that a nearby material emitted light when the tube was operating, which he termed X-rays. He took the first X-ray photographs, including of his wife's hand. For his discovery, he received numerous honors including the first Nobel Prize in Physics in 1901. Röntgen made his discovery accidentally while experimenting on whether cathode rays could pass through glass in his lab in Würzburg, Germany.