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Subject: Re: Human Experimentation : Calling All Help Offered
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Date: Tue, 21 Jan 2003 16:51:23 GMT
NNTP-Posting-Date: Tue, 21 Jan 2003 16:51:23 GMT
Organization: AT&T Worldnet
You are right. I hastily used a different base on that one (using log base 2
"John Fields" wrote in message
> On Tue, 21 Jan 2003 15:12:18 GMT, "News2020"
> >Some of you are working with these things and should be helping with this
> >measurement part instead of picking on what little I have been able to do
> >I have mentioned over 30x (100dB above safe levels) near the mains switch
> >boxes outside the houses in this whole area.
> It doesn't work like that.
> If you're talking power, dB(W) = 10log(P2/P1), so a 30-fold increase
> in power would be equal to 10log(30/1) = 14.8dB. 100dB would
> indicate an increase in power of 10,000,000,000 times. You'd be
> toast. You'd be a little less darkly toasted if you were talking
> voltage, since dB(V) = 20log(V2/V1), but at 100dB you're still
> talking a voltage increase of 100000 times "over safe levels",
> whatever that means.
> John Fields