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23 h 50 min, 7 nov 1885 ans - November 8, 1895: Wilhelm Conrad Roentgen theorizes that fluorescent light shining through a paper wrapped tube must be the result of rays

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ByTim
21 nov. 2017
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Date:

23 h 50 min, 7 nov 1885 ans
Maintenaint
~ Il y a 140 ans