4 ms·
Someone posted this: https://www.advgauging.com/product/berthold-7440-d-cr-500-mci-cs-137-source/ https://www.advgauging.com/product/berthold-7440-d-cr-500-mc..
by helsinkiandrew 4y ago
Someone posted this:
https://www.advgauging.com/product/berthold-7440-d-cr-500-mci-cs-137-source/ https://www.advgauging.com/product/berthold-7440-d-cr-500-mc...
on the discussion when it went missing:
https://news.ycombinator.com/item?id=34560399 https://news.ycombinator.com/item?id=34560399
By measuring how much radiation is absorbed through some material you can determine how much metal it contains