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  • Radioactivity

    • Radioactive decay and half-life - CCEA

      Radioactivity was first noticed by French physicist, Henri Becquerel, in 1896, when he observed that some photographic plates which had been stored close to a uranium compound had become partly exposed or ‘fogged’.

    • The dangers and uses of radiation - CCEA

      People are exposed to sources of radiation in all aspects of everyday life. Radioactive sources can be very useful but need handling carefully to ensure safety.

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