| 11. | En 1898, sir William Crookes pidio que los cientificos salvaran a Europa de una cercana hambruna.
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| 12. | Sir William Crookes and William de Wiveleslie Abney were other early photographers to try the pinhole technique.
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| 13. | In 1900 William Crookes isolated protactinium as a radioactive material from uranium which he could not identify.
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| 14. | Early researchers included Michael Faraday, Alfred Russel Wallace, Rufus Osgood Mason, and William Crookes.
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| 15. | The usefulness of didymium glass for eye protection of this sort was discovered by Sir William Crookes.
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| 16. | In 1906, Hope managed to dupe William Crookes with a fake spirit photograph of his wife.
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| 17. | They also worked with samples of " Uranium X " from William Crookes and radium from Marie Curie.
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| 18. | The spirit photographer William Hope tricked William Crookes with a fake spirit photograph of his wife in 1906.
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| 19. | Sir William Crookes, Edward Divers and J . A . R . Newlands also attended the college.
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| 20. | He originally endorsed spiritualism after becoming convinced of the work of William Crookes with the medium Florence Cook.
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