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27/03/1845 German physicist Wilhelm Röntgen is born

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.

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