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November 1, 2025
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18 oct. 1900 - soddy

Description:

Observed spontaneous disintegration of radioactive elements into variants he called "isotopes" or totally new elements, discovered "half-life", made initial calculations on energy released during decay.

Ajouté au bande de temps:

Date:

18 oct. 1900
Maintenaint
~ Il y a 125 ans