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Discovery of Radium
History of Poland
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| | 1898 | Curie, Marie Sklodowska | |
| 26th Dec Paris Discovers that pitchblende must contain traces of an unknown radioactive component far more radioactive than uranium, Marie Sklodowska-Curie announces the existence of this new substance |
| 1902 | Curie, Marie Sklodowska | |
| The Curies first name polonium after Marie's native country Poland, and radium from its intense radioactivity |
| 1903 | Curie, Marie Sklodowska | |
| 25th June Announces the discovery of radium |
| 25th June Intentionally does not patent the radium isolation process, instead leaving it open so the scientific community could research unhindered |
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