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31 gen 1895 anni - Wilhelm Roentgen discovered x-rays, formerly known as Roentgen rays, while experimenting with cathode rays.
Aggiunto al nastro di tempo:
1st Nine Weeks Honor Project Chemistry
By
Ayanna
18 ott 2018
0
0
272
Data:
31 gen 1895 anni
Adesso
~ 129 years ago
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