Radioactive sources contain radioactive material of a particular radionuclide (an unstable form of an element emitting radiation), which can vary based on the application for which the source was ...
Kelling Donald does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...
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Science history: Marie Curie discovers a strange radioactive substance that would eventually kill her — Dec. 26, 1898
Scientists in Paris discovered two new substances with incredible radioactivity. It earned them the Nobel Prize in Physics ...
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