Henri Becquerel's discovery of radioactivity – 125 years later When a name becomes a unit Antoine Henri Becquerel Becquerel and the discovery of radioactivity Early concepts It has been 100 years since Becquerel discovered radioactivity shortly after he learned of Roentgens discovery of xrays at a meeting of the Frence Academy of Science His discovery in 16 was a direct consequence of his work and that of his father and grandfather on phosphorescence Wojciech Wieczorek Follow Feb 25 3 min read In 16, Becquerel had registered the very first spontaneous radioactivity while working on xrays A mere accident allowed him to detect remarkable, notseenbefore phenomenon To some degree, all discoveries are like rolling a dice What, once thought out, is kind of funny;
Marie Curie
