• redjard ( Redjard@reddthat.com ) 
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    5か月前

    The beta emission of ⁶⁰Co can probably get through over 6mm of glass. This should be plenty for phones.

    But also

    ⁶⁰Co undergoes beta decay to an excited state of the stable isotope nickel-60 (⁶⁰Ni), which then emits two gamma rays […]