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jul 20, 1896 - Henri Becquerel + Pierce + Mari
Description:
The three of them discovered X-Rays and radioactiviy, Polonium and Radium.
Added to timeline:
Atomic History_Kim
By
KeeWan Kim
3 Oct 2018
0
0
475
Date:
jul 20, 1896
Now
~ 129 years ago
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