From: John Larkin
Subject: Re: eer
Date: Fri, 01 Nov 2002 10:15:00 -0800
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On 01 Nov 2002 02:38:41 GMT, firstname.lastname@example.org (StevJensen) wrote:
>John Woodgate email@example.com
>> read in sci.electronics.design that StevJensen
>>wrote (in <firstname.lastname@example.org>) about 'eer', on
>>>Well, there might be an issue with getting a 10kg brick to my desk in the
>>>first place. But for say a 10g sized block, if I tossed a sheet of tin foil
>>>over it (or even if I didn't) would there be a real reason to care as long
>>>as I avoided direct contact?
>>Tinfoil doesn't stop gammas, and doesn't stop high-energy betas. Pu239
>>is an alpha and gamma emitter, but its decay products produce betas as
>>>In other words how close would a measurement
>>>probe have to get before it recognized a level above background?
>>>A 1/4 inch, an inch, a foot, 10 feet?
>>I don't have that information.
>Neither do I and that is the problem.
>Just imagine how much better oxygen free speaker cables would sell
>if there was even the smallest scientific support for the concept.
>Unquestionably a good shot of hard radiation can kill you.
>So can a glass full of water.
>Given that both water and radiation are ubiquitous in the environment
>is one actually more dangerous than the other?
>In other words how much of the hype associated with this subject
>has actual meaning and how much is pure BS.
>>>I wore a radium watch for years. That would bury a probe at 1/4 inch,
>>>and was recognizable out to a couple inches.
>>>Interestingly enough my arm hasn't fallen off yet.
>>The metal of the watch is thick enough to stop alphas and most betas.
>>Ra226 (half-life 1602 years) is an alpha and weak gamma emitter.
>Just a WAG but since the half-life of Pu239 is something like 200k+
>then gram for gram the measured activity seems likely to be, crudely,
>1/200 for that of the Ra226.
>Am I even remotely correct. I do not know.
>But this is something I would like to know.
you sound interested in this radiation stuff, so I suggest you spend a
day or two in a decent library and get some facts.