I'm a little curious about something. I know that thorium's radioactivity level (assuming no synthetic isotopes) is pretty low - its half life is 1.4x1010 years. I'm just not certain how it would compare to typicial background radiation levels. Gut feel says that it would be comparatively low, but I'm not a nuclear physicist.
Of course, the level would increase as you get more of it, and more concentrated samples, but still ... I can't help but feel that this is all a "RADIATION IS EVIL!!!!!11!!1!!!1!!one" knee-jerk thing, to a fair extent.
And, to be fair, as an alpha emitter, it's a substance you don't want to be ingesting, but there are worse offenders in that regard, I think.
I'd really like somebody who knows more about nuclear physics than I to comment - it's been bugging me for a while now.
PEK Price at posting:
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