From: John Woodgate
Subject: Re: Any ideas on measuring radiation in the home ?
Date: Fri, 27 Sep 2002 07:54:11 +0100
Organization: JMWA Electronics Consultancy
Reply-To: John Woodgate
NNTP-Posting-Date: Fri, 27 Sep 2002 09:53:50 +0000 (UTC)
X-Newsreader: Turnpike (32) Version 4.01 <5Z8C9wtxbnpWyFnyfFzqmVF739>
I read in sci.electronics.design that News2020 wrote
(in ) about
'Any ideas on measuring radiation in the home ?', on Fri, 27 Sep 2002:
>The responses so far :
Yes, you are getting some wild responses. The situation is that your
radiation detector picked up *something* when you unplugged the oven.
Inside the oven is a filter that prevents electrical noise, at much
lower frequencies than the microwaves. This filter is always connected
to the mains supply, even when the oven is switched off, and it draws a
very small current from the supply. When you interrupt this current,
there is a tiny burst of radio-frequency energy from the spark, and that
is what your detector is responding to.
The detector is misleading, because it is too sensitive; it is
responding to radiation at a very low level indeed, a level far less
than people have been exposed to over geological time from natural
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
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