Röntgen (27 March 1845 –
10 February 1923) was a German physicist, who, on 8 November 1895, produced and
detected electromagnetic radiation in a wavelength range today known as X-rays
or Röntgen rays, an achievement that earned him the first Nobel Prize in
Physics in 1901. In honour of his accomplishments, IUPAC named element 111, Roentgenium,
a very radioactive element with multiple unstable isotopes, after him.