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If Eugene Peligot hadn't decomposed uranium oxide He wouldn't have obtained this pure metal.
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If Röntgenno Wilhelm Conrad hadn't discovered X-rays we wouldn't have been able to use it in medicine and in modern life.
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If Henri Becquerel hadn't discovered radioactivity, Marie Curie would have not discovered radium, thorium and polonium.
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If Marie and Pierre Curie had not discovered radium an polonium, they would haven't found its usefulness in medicine.
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If Marie Curie hadn't found medical applications for radioactivity, She wouldn't have received the Nobel Prize.
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If James Chawdick hadn't discovered the neutron, we wouldn't have been able to obtain the atomic mass formula.
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If Mark Oliphant hadn't theorized about the fusion of light nuclei, Hans Bethe hadn't described the workings of stars based on this mechanism.
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If Mary hadn't studied about radioactivity, she wouldn't have died of leukemia.
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If Jean Frederic Joliot-Curie and Irene Joliot-Curie hadn't bombarded boron nuclei and aluminum with alpha particles, Lise Meitner, Otto Hahn and Fritz Strassmann haven't demonstrated the first experimental observation of fission.
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If the International Atomic Energy Agency (IAEA) hadn't released a new radioactivity warning symbol, many people wouldn't have understood that some compounds are dangerous.
