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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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6 ene 1896 año - Henri Becquerel accidentally created radioactivity because he left something some uranium salt on a photograph.
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Science Atoms History
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Nathan Pemper
20 dic 2018
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6 ene 1896 año
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~ 129 years ago
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