r/whenthe 13h ago

BRB, destroying the few grams of Californium on Earth

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u/bulettee 12h ago

Pretty sure most firealarms (both in and outside the US) contain americium

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u/HarioDinio 9h ago

Just dont lick them then

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u/givemeagooduns_un 3h ago

about half. there are two kinds, those using radioactivity to detect smoke (and use americium as the radioactivity source) and those that use light.