Question

Antoine Henri Becquerel was a French physicist who did a lot of work with fluorescent minerals. While conducting some experiments with minerals containing uranium, he discovered
, but he did not know it at the time.

Answer 1

Antoine Henri Becquerel was a French physicist who did a lot of work with fluorescent minerals. While conducting some experiments with minerals containing uranium, he discovered radioactivity — the spontaneous emission of radiation from uranium — but he did not know it at the time.