#accaddeoggi 2 marzo 1896: Becquerel scopre la radioattività

Grandi scoperte scientifiche

Antoine Henri Becquerel (Parigi, 15 dicembre 1852 – Le Croisic, 25 agosto 1908) si avvicinò alla scienza grazie al padre e al nonno, entrambi fisici di fama che avevano insegnato al "Muséum national d'histoire naturelle" di Parigi.

La scoperta dei raggi X nel 1895, da parte di Wilhelm Conrad Röntgen, lo indirizzò a sperimentare le relazioni esistenti fra raggi X e fluorescenza.

I suoi studi lo portarono a concludere che la radiazione era un evento naturale e non necessariamente indotto da una fonte di energia esterna, sia essa luce solare o altra fonte artificiale. Il 2 marzo del 1896 espose i risultati all'Accademia francese delle Scienze e da questo giorno si cominciò a parlare in Fisica di radioattività, originata dalla disintegrazione, spontanea o provocata, di un nucleo atomico con conseguente emissione di radiazioni elettromagnetiche.

La radioattività

redazione
parte di: Accadde oggi ...

02/03/2017

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