| 21. | In 1895, Wilhelm R�ntgen discovered X-rays emanating from Crookes tubes.
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| 22. | Crookes featured in Round 8 ( London Broncos ).
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| 23. | Crookes was born in Sheffield, Yorkshire, England.
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| 24. | :: I suggest someone take a look at Talk : Wayne Crookes.
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| 25. | William Crookes used the pumps in series in his studies of electric discharges.
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| 26. | Crookes would represent Lincolnshire in 10 Minor Counties matches.
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| 27. | The 1920 season was the only season in which Crookes represented the club.
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| 28. | Recession, says Crookes, can be " an opportunity period ."
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| 29. | His early experiments were with Crookes tubes, a cold cathode electrical discharge tube.
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| 30. | William Crookes and Claude-Auguste Lamy both started to use the new method.
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