How (not) to Ship Radioactive Marbles

But they're so green!

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We recently needed some radioactive material for an experiment so what do you do? Jump on Ebay and United Nuclear of course!

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Marbles on the envelope they arrived in

Known as green Vaseline glass, they used Uranium Oxide in the 50s and 60s to get the effect. As a (potentially bad) side effect, it’s 200 CPM! MightyOhm has a great writeup on various nuclear sources around your house.

In this age of crazy shipping restrictions we were blown away that (ok very slightly) radioactive marbles arrived in a first-class mail envelope. So good!


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