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From: "Dirk Bruere"
Subject: Re: Any ideas on measuring radiation in the home ?
Date: Thu, 3 Oct 2002 04:25:16 +0100
References: <2v_l9.76313$jG2.email@example.com><firstname.lastname@example.org> <0I1YkqBZoKm9Ewbi@jmwa.demon.co.uk> <email@example.com> <3D9B093C.F7934D4C@webaccess.net>
Reply-To: "Dirk Bruere"
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"Chuck Simmons" wrote in message
> Dirk Bruere wrote:
> > "Sir Charles W. Shults III" wrote in message
> > news:OTpm9.45614$O8.firstname.lastname@example.org...
> > > Who can say what they believe? I know that they use
> > long
> > > poles and a lead container to clean the stuff up with. They minimize
> > their
> > > exposure with distance; the bunny suits keep any dust from getting on
> > them.
> > When I was playing with radioisotopes at university we discovered
> > quite interesting.
> > We measured the count rate of Co60 after we had removed it from its lead
> > box.
> > At the end of the expt I decided to measure it again even though it was
> > already back in its lead box - no significant change.
> > Dirk
> I am reminded of the wonderful Texas Instruments watch I had years ago.
> I always prefer an analog watch because, in the ordinary way, I'm only
> interested in time to the nearest 5 minutes. But many years ago I bought
> this nice Texas Instruments watch that I could read in a dark room. It
> had a tritium display. Of course I glowed in the dark from the
> radioactivity thus making the watch visible. You can't get these watches
> anymore as far as I know. If you want to glow in the dark so you can
> read your watch, you must make other arrangements.
Those tritium backlights were quite safe - unless broken, in which case the
radioactive gas was released.
It is a very low energy beta emitter.
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