[ RadSafe ] Fwd: Fwd: [New post] Radiation emitters Mixing Apples (External) and Oranges (Internal)

John R Johnson idiasjrj at gmail.com
Tue Aug 27 15:40:42 CDT 2013


And K-40 is a naturally occurring radionuclide and mammals need potassium
to live!


On Tue, Aug 27, 2013 at 11:07 AM, Chris Alston <achris1999 at gmail.com> wrote:

> Roger
> I suspect that he simply does not understand the issues, and/or the
> facts.  He, himself, basically makes the point that K-40 is in most
> everything we eat, but then shoots himself in the foot in thinking
> that Cs-137 (a K-analogue) is more dangerous, even though the t1/2 is
> orders of magnitude shorter than that of K-40, and the gamma emissions
> are much lower energy.
> Cheers
> cja
> P.S.  In no sense does Cs-137 have a longer t1/2 than radium (Ra-226,
> physical t1/2 ~= 1600 y).
> ---------- Forwarded message ----------
> From: Roger Helbig <rwhelbig at gmail.com>
> Date: Tue, Aug 27, 2013 at 2:07 AM
> Subject: [ RadSafe ] Fwd: [New post] Radiation emitters Mixing Apples
> (External) and Oranges (Internal)
> To: RADSAFE <radsafe at health.phys.iit.edu>But the cesium which was
> scattered all over the place by above-ground
> nuclear tests and the Chernobyl and Fukushima accidents has a much
> longer half life, and can easily contaminate food and water supplies.
> As the New York Times notes:
> Over the long term, the big threat to human health is cesium-137,
> which has a half-life of 30 years.
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