: This proved that radiation was an inherent property of certain atoms, a phenomenon later named "radioactivity" by his doctoral student, Marie Curie . Key Scientific Contributions

: In 1899, he demonstrated that some radioactive rays (beta particles) could be deflected by magnetic fields, proving they were charged particles rather than waves.

Antoine Henri Becquerel (1852–1908) was a Nobel Prize-winning French physicist renowned for his discovery of . His work laid the foundational stone for nuclear physics and changed our understanding of the atomic structure. The Discovery of Radioactivity (1896)

: In 1901, after being accidentally burned by a vial of radium in his pocket, he realized that radioactivity could affect living tissue. This led to the birth of radiotherapy for treating cancer. Awards and Legacy Henri Becquerel – Facts - NobelPrize.org