| 11. | The Crookes were named as " The Guardian"
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| 12. | Crookes defended Fay in a letter that was printed in the article.
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| 13. | The spiritualist William Crookes was also influenced by Gasparin's experiments.
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| 14. | Squadron Leader Norman Crookes was the headmaster for 20 years from 1961.
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| 15. | Hopewell also began other writing work alongside his work with The Crookes.
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| 16. | Cathode rays were discovered by Johann Hittorf in 1869 in primitive Crookes tubes.
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| 17. | He developed the Crookes tubes, investigating cathode rays.
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| 18. | Thomson constructed a Crookes tube with a better vacuum.
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| 19. | The current councillors for Crookes Ward are Parliamentary constituency.
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| 20. | William Crookes claimed Home could levitate five to seven feet above the floor.
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