University of Wurzburg scientist who discovered x-rays on November 8, 1895. They were coming from a Hittorf-Crookes tube. For this he was awarded the first Nobel Prize in physics in 1901. He refused to take out a patent on his discovery.

Unfortunately, he liked to demonstrate x-rays by holding his hand in a beam of them and died of radiation exposure. Maybe the first, definitely not the last. For a time x-rays were used in shoe stores so people could see how well their shoes fit