Discovery of radioactivity
When: 1895 - 1902
Where:
New types of radiation observed by Roentgen (x-rays, 1895) and Becquerel (beta rays, 1898) opened study of atomic transformation via radioactive decay. Key principles are established by M. Curie (process of beta decay, 1902) and Rutherford (principle of the half life, 1904).
Event Category