William Crookes
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Sir William Crookes was an English chemist and physicist who attended the Royal College of Chemistry, now part of Imperial College London, and worked on spectroscopy. He was a pioneer of vacuum tubes,
Crookes in 1906
Blue plaque, 7 Kensington Park Gardens, London
The element thallium, discovered by Crookes
The mineral crookesite, a selenide of copper, thallium and silver (Cu 7(Tl, Ag)Se 4), named for Crookes
Florence Cook (medium)
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Florence Eliza Cook was a medium who claimed to materialise a spirit, "Katie King". The question of whether the spirit was real or a fraud was a notable public controversy of the mid-1870s. Her abilit
William Crookes
…Fleetwood Varley, Crookes attended a séance to try to get in touch with his brother. Between 1871 and 1874, Crookes studied the mediums Kate Fox, Florence Cook, and Daniel Dunglas Home. After his investigation, he believed that the mediums could produce genuine paranormal phenomena and communicate with spirits…
Katie King, Florence Cook and Sir William Crookes