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21 dez 1898 ano - Marie and Peirre Discovery

Descrição:

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 set 2019
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Data:

21 dez 1898 ano
Agora
~ 126 years ago
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