Wilhelm
Conrad Röntgen, born on 27 March 1845, was a German
mechanical engineer and physicist, who, on 8 November 1895, produced and
detected electromagnetic radiation in a wavelength range known as X-rays or
Röntgen rays, an achievement that earned him the inaugural Nobel Prize in
Physics in 1901. In honour of Röntgen's accomplishments, in 2004 the
International Union of Pure and Applied Chemistry (IUPAC) named element 111,
roentgenium, a radioactive element with multiple unstable isotopes, after him.
The unit of measurement roentgen was also named after him.
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