X-Rays by Wilhelm Conrad Röntgen (Milestones of Science)
Wilhelm Conrad Röntgen Biography
He is most known for his discovery of X-rays, or electromagnetic radiation in a wavelength ranging from 0.01 to 10 nanometers. In many countries, the X-rays are called simply Röntgen rays. Their main application is medicinal imaging but they are used in many other fields. Element 111 is called Roentgenium in Rontgen’s honor.