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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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17 sept 1896 año - Henri Becquerel discovered radiation by studying the effects of x-rays on photographic film.
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Tommy Worcester
27 sep 2017
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fecha:
17 sept 1896 año
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~ 129 years ago
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