Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!leah!rpi!batcomputer!cornell!rochester!pt.cs.cmu.edu!andrew.cmu.edu!kg19+
From: kg19+@andrew.cmu.edu (Kurt A. Geisel)
Newsgroups: sci.electronics
Subject: Re: wireless electricity
Message-ID: <8YLFbSy00WB9I=ga9t@andrew.cmu.edu>
Date: 2 May 89 03:00:46 GMT
References: <913@snjsn1.SJ.ATE.SLB.COM>,
	<652@netcom.UUCP>
Organization: Class of '92, Carnegie Mellon, Pittsburgh, PA
Lines: 14
In-Reply-To: <652@netcom.UUCP>

> Tesla worked on a plan to use one or two huge Tesla coils to generate RF
>power at the resonant frequency of the planet, which, if I recall is about
>140KHz (I may be in error about the frequency. It's been some years since I
>read about it). The idea was to provide "free power" for the world. I
>recall that he had developed receiving converters that would pick up the 
>RF energy and convert it to a usable form for lighting, et cetera. Small
>scale devices in his experiments worked very well.

For the record, the actual frequency is somewhere around 7 Hz.  There
is modern evidence to back the "resonance" theory.  Lightning strikes
around the globe "ring" the Earth at 7 Hz, which can easily be seen
with a sensitive detector and spectrum analyzer.

- Kurt