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21 dic 1898 año - Marie and Peirre Discovery

Descripción:

On December 21st 1898 Marie and Peirre discovered radioactive compounds which became a new element. They measured the intensity around 3,000 times uranium.

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ByJackson Quade
30 sep 2019

fecha:

21 dic 1898 año
Ahora mismo
~ 125 years ago
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