: 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

: On a cloudy day in Paris, he placed uranium crystals on a photographic plate wrapped in black paper and tucked them in a dark drawer.

: He was the first to realize that beta particles were identical to the high-speed electrons recently discovered by J.J. Thomson.

Becquerel's most famous achievement was an accidental discovery involving uranium salts.

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)