[PAR] [TLE] William Crookes [SEP] Sir William Crookes {'1': ", '2': ", '3': ", '4': "} ( ; 17 June 1832 – 4 April 1919) was an English chemist and physicist who attended the Royal College of Chemistry in London, and worked on spectroscopy.  He was a pioneer of vacuum tubes, inventing the Crookes tube which was made in 1875.  Crookes was the inventor of the Crookes radiometer, which today is made and sold as a novelty item.  Late in life, he became interested in spiritualism, and became the president of the Society for Psychical Research. [PAR] [TLE] Lucium [SEP] Lucium was the proposed name for an alleged new element found by chemist Prosper Barrière in 1896 in the mineral monazite.  Later, William Crookes confirmed that the new element was actually an impure sample of yttrium.
[PAR] [TLE] William Crookes [ SEP ] Sir William Crookes { ' 1 ' : " , ' 2 ' : " , ' 3 ' : " , ' 4 ' : " } ( ; 17 June 1832 – 4 April 1919 ) was an English chemist and physicist who attended the Royal College of Chemistry in London , and worked on spectroscopy . He was a pioneer of vacuum tubes , inventing the Crookes tube which was made in 1875 . Crookes was the inventor of the Crookes radiometer , which today is made and sold as a novelty item . Late in life , he became interested in spiritualism , and became the president of the Society for Psychical Research . [PAR] [TLE] Lucium [ SEP ] Lucium was the proposed name for an alleged new element found by chemist Prosper Barrière in 1896 in the mineral monazite . Later , William Crookes confirmed that the new element was actually an impure sample of yttrium .
Lucium was confimed to be an impure sample of yttrium by an English chemist who became the president of what?
Lucium was confimed to be an impure sample of yttrium by an English chemist who became the president of what ?
Society for Psychical Research
Society for Psychical Research