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While experimenting with electricity, Wilhelm Röntgen discovers the X-ray.
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Wilhelm Röntgen
German physicist (1845–1923)
Wilhelm Conrad Röntgen, sometimes transliterated as Roentgen, was a German physicist who produced and detected electromagnetic radiation in a wavelength range known as X-rays. As a result of this discovery, he became the first recipient of the Nobel Prize in Physics in 1901.Source: Wikipedia (CC BY-SA)
X-ray
Form of electromagnetic radiation
An X-ray (also known in many languages as Röntgen radiation) is a form of high-energy electromagnetic radiation with a wavelength shorter than those of ultraviolet rays and longer than those of gamma rays. Roughly, X-rays have a wavelength ranging from 10 nanometers to 10…Source: Wikipedia (CC BY-SA)