Antoine Henri Becquerel, a French physicist, discovered radioactivity in 1896. Becquerel's discovery led to the development of modern physics and played an important role in the development of nuclear energy. Becquerel was highly regarded for his work on the properties of radiation and found that certain materials emit particles without any external stimulation. Some common synonyms for Antoine Henri Becquerel include physicist, scientist, radioactivity researcher, experimentalist, and innovator. His contributions have been recognized worldwide and have earned him a prominent place in the history of science. Antoine Henri Becquerel's discoveries continue to inspire scientists and researchers in the field of physics.