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1 gen 1941 anni - Glenn Seaborg discovers plutonium. The U.S. Committee on X‑ray Protection recommends adoption of maximum body burden of 0.1 microCurie for radium. L.S. Taylor recommends lowering the x‑ray exposure dose to 0.02 Roentgens/day.

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Radiation Timeline

ByJoshua Ha
8 giu 2018
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1 gen 1941 anni
Adesso
~ 84 years ago

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