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*To*: tesla-at-pupman-dot-com*Subject*: Re: 135 foot streamers*From*: "Jim Lux" <jimlux-at-jpl.nasa.gov> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)*Date*: Tue, 10 Oct 2000 11:30:01 -0600*Delivered-To*: fixup-tesla-at-pupman-dot-com-at-fixme

There are literally an infinite number of harmonics of any arbitrary frequency, and if the fundamental is as low as 8 Hz, they're pretty close together (i.e. 8 Hz). In fact, given the usual Q of a tesla coil (in the 10-50 range, not breaking out), if your coil runs at the 12,500th harmonic of 8 Hz (i.e. 100 kHz), the nominal bandwidth of the coil is 2-10 kHz, covering several hundred different harmonics. If you want to send power around the world, there are a lot of other factors you need to consider, primarily absorbtion in the "waveguide walls". If you take a look at the "Omega Navigation System", you'll find out a whole bunch about round the world single mode propagation. Omega uses (used?) frequencies around 10 kHz. Those interested in VLF propagation can contact me off list and I can give you some references to go find out more.. mailto:jimlux-at-earthlink-dot-net?Subject=VLF propagation ---------- > From: Tesla list <tesla-at-pupman-dot-com> > To: tesla-at-pupman-dot-com > Subject: Re: 135 foot streamers > Date: Monday, October 09, 2000 5:39 PM > > Original poster: Hollmike-at-aol-dot-com > > In a message dated 10/9/2000 3:27:59 PM Mountain Standard Time, > tesla-at-pupman-dot-com writes: > > > Has anyone consider the > > earth resonance frequencies in their own experiments. (8,14 and 20 cycles)? > > > > I was planning to use a high harmonic of them on my next coil. In fact, I > have a spreadsheet where I determined various frequencies that were odd > harmonics of most of the Schumann resonance frequencies(there are more than > you listed). It turns out that there are quite a few frequencies that are > common to most of the Schumann resonance frequencies and are within the > normal range of TC frequencies. It made me wonder if Tesla hit on one of > these and figured it to be good for his transmission of power scheme. On > the other hand, how'd you like to see a TC large enough to resonate at 8 Hz? > Mike > >

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