Who regularly sells 10-18mm tritium spheres (pictured at bottom), and where can I buy them reliably? [more inside]
posted by Phyltre on Aug 14, 2009 - 14 answers

Where can I get some small quantities of radioactive materials for science fair type projects? [more inside]
posted by neuron on Mar 3, 2009 - 10 answers

I remember reading a true story online about an accidental death in a physics laboratory during the early studies of radioactivity and nuclear physics experiments. I think it involved a clumsy physics student who accidentally dropped a brick of radioactive material onto a stack of these bricks which set off some sort of chain reaction. Can someone find this story online for me?
posted by Paul KC on Dec 9, 2008 - 8 answers

My friend was just diagnosed with Graves Disease and the doctor decided it was so serious he should immediately get radioactive iodine treatment, and he was given a 16mCi pill today. So, apparently, he is very radioactive right now, and would set off Homeland Security terror alerts in airports if he walked through. [more inside]
posted by extrabox on Feb 21, 2006 - 15 answers

Are there any animals that have evolved a use for radioactivity? If so, what ways is it used? If not, why has this not happened? [more inside]
posted by 0bvious on Nov 23, 2005 - 32 answers