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PEMF device that mimics earth's magnetic field? Answered

I am very interested in making a pulsed electric magnetic field device that mimics the Earth's own magnetic field.

It could be as simple as one single coil. That coil would have to have a magnetic field that measures in the 30 to 90 microTesla range, and it would have to be able to be pulsed in the 5 to 45 Hz frequency range, since that is roughly the strength and frequency of the Earth's own magnetic field

Any ideas on how to make that happen? I am a reasonably intelligent person, but I am not necessarily technically gifted. So for somebody this might be uber simple, I don't know, but I am just not sure how to go about doing this.

What do you think?



Kelseymh, the geomagnetic field of the earth fluctuates and affects plants and animals apparently. The Global Coherence Initiative of the Heart Math Institute is doing research, including burying very sensitive magnetic sensors at points around the globe to get a picture of what the planet's realtime mag field looks like. Real "science" in my book.

I'm interested in using Lapis' setup but to replace the PEMF medical devices going for $20k and being used by Dr. Garry Gordon, who spoke at my nonprofit last night, www.smartlifeforum.org. I'd be willing to fund an opensource PEMF project too, potentially.

I am in the initial stages of developing an electronic device for AFIB occurring when very low frequency magnetic fields precede a low pressure wx front. There are studies that were conducted in the late 60's on this magnetic field and effects on AFIB, and current scientific studies being conducted in Sweden and Norway that confirm this effect. Personally, a major low front gets me everytime and then goes away when the high pressure comes in or the front passes. The beta blockers that I use are not effective during this time. I have sporadic AFIB but nothing wrong with my heart itself. . To my knowledge, no one is working on a device to cancel these waves... My contact number is 502-368-3807.. Paul Schuster. if this is of interest to you.

Hi Paul, have you made any progress on this project?



Uh, huh. Twelve sensors. That'll do an excellent job of mapping the geomagnetic field with a resolution of about 1,000,000 km2, and providing, maybe, "real time" variations of the geomagnetic field at twelve specific locations, not globally.

We already have plenty of satellites (with results published in proper peer-reviewed scientific journals) which can map the geomagnetic field on timescales of roughly a week, at resolutions of tens of square kilometers over the entire planet.

i think he's talking about measuring the frequency of Schumann not the magnetic field amplitude.

this one looks good but 11K still seems like a lot of money for the technology. lifetime warranty whatever that means, but 22 kilogauss and evidently a square wave. adjustable frequency and amplitude. looks like a whole body Bob Beck pulser to me. with God-know's what in the chemtrails i'm looking to get one.



7 years ago

what do you want to do with it?

I want to see how it will affect plants grown in a greenhouse if placed directly under the pots

But....all the plants in that greenhouse are already being affected by exactly the magnetic field you describe, by construction. Unless your greenhouse is on another planet, of course.

the greenhouse sits on top of a concrete footer. The plants sit about three or 4 feet up off that footer. There is a theory that says that the electromagnetic effects these plants are experiencing are not the same as the electric magnetic effects of plants planted directly in the Earth.

I want to test this

Wait a sec. I just reread this. As I noted, all of your plants are already immersed in the existing geomagnetic field -- hold a compass near one of them; does it point North? Q.E.D. The plants will also already be exposed to whatever EM radiation (whether from ionospheric stuff, or far more strongly, from that WiFi access point up on the wall) happens to be in the local environment.

It sounds like the "theory" at hand is whether there are electric or magnetic effects which propagate through soil, and which are different for potted plants. You're not going to test that hypothesis by replicating (i.e., doubling) the natural geomagnetic field. Rather, it sounds like what you'd want to do is to embed electrodes (nails or long grounding spikes) in the plants' pots, hook those up to a voltage/current source, and try to replicate whatever in-ground electric fields are supposed to be present.

green house grows are full of emf drowning out the Schumann resonance. he's on the right track but not quite "in-tune" why.

[citation needed] :-)

What theory? Peer-reviewed research, or "some guy on the Internet"?

what difference does it make?

It's a subject I'm interested in and I want to set up an experiment to gather data and test it

A.k.a." science"

The difference is only whether you're more likely or less likely to be able to set up a well-defined and replicable experiment (a.k.a., "real" science) or something uncontrolled where you can interpret ambiguous results any way you like :-)

If there's some good, physically and physiologically motivated model for the geomagnetic field to influence plant growth, then you're likely to get usable results. If it's just "some guy" making claims akin to Pyramid Power, you might see that some of your plants behave differently than others, but may not have a well-enough defined system to really point to what caused the difference.

In any event, experimentation is never bad! It very much helps, however, to have something behind it to keep you focused.

well, even if the field that I produce does not replicate the earths magnetic field precisely, I am still testing the effect of that field on those plants. So the test and the results are still valid, regardless of whether or not I can claim that the field precisely mimics the earths own electromagnetic field

the terrestrial planet (roots in soil) are stimulated at 9.6 hz not schumann. use close to 10 Hz and your plants will grow like this.


Schumann has been morphed by trillions of watts of micro-wave (very short wave) energy pumped into the ionosphere over the past 30 years. The morph isn't by just a little bit either. Can't sleep?...it's only going to get worse.


We are using NASA recommendation while making our pemf devices with 3 years warranty and support. Wave form is sawtooth .Frequency 0-30 Hz.Intensity 0-60 microtesla .Lower frequency at head and higher at middle and more at leg . Round copper coils not mesh as recommended by NASA .Day mode with high and night mode with lower frequencies with schumann wave. Current maximum 10 volts ( adaptor is to be used). We can also increase or decrease intensity and frequency according to need and can design accordingly

we have pemf whole body mat and transcranial magnetic stimulation helmet for depression.. visit www.pemfindia.com

I am want someone to make me a PEMF machine ...I am committed to optimal health. I want pay someone that has already made one and it works... If you know someone that can build me a devise please let me know... my phone is 619 890 9996. My name is Richard.

One way to make a PEMF device is to use an MP3 player and an off-the-self electromagnetic coil that plugs into a standard 3.5mm stereo headphone jack. Create a sound file using the frequency generator functions of Audacity or sox, and play this file from the MP3 player. If you go to my website listed in my profile I have already made sound files and detailed instructions of the coil to buy.

This should be fairly easy to do. Note that I said fairly. The hardest part is trying to get the right amount of magnetic energy. From what I understand, to little won't help and neither will to much. Has to be within a given range. All you need to do is send a pulse (7-30 hz) down a wire and it will generate a magnetic field. To amplify/concentrate that field, you only need to coil the wire. Best to use magnet wire for this. An Arduino controller would be more than capable of generating the correct frequency and the motor shield should be able to drive the coils. My guess is that it would cost no more than U.S. $100 . Since magnetic energy drops off as a function of distance, need a way of manually moving to coil closer or further from subject as needed. Hall effect device may be just what Dr. ordered for cheaply measuring magnetic field generated by coils.

For further reading, you may want to check out Bryant A. Meyers book (or kindle) called, "PEMF - The Fifth Element of Health(skip first few chapters)" as well as "The Magnetic Effect" by Davis and Rawls.

Of course if you build one, you really don't want to tell anyone who bought one of those thousand+ dollar devices.

Looks like I just figured out what my next project is going to be.

By the way, I must admit that I wandered off into theory and physics in my comments. In terms of actually building something, it ought to be pretty easy. Here's an outline; I leave the practical circuit details to a bit of research :-)

1) Find out your local geomagnetic field, probably with a bit of online research. You want the average local strength and dip angle (the field is approximately vertical near the poles, and horizontal near the equator).

2) Build a pair of Helmholtz coils, bigger around than the plant you want to study. You can find calculators online how to compute the number of turns you need for a given field.

3) Set up a stand such that you can hold the coils apart, by about their own diameter, with the axis of the imaginary cylinder pointing in the dip-angle direction.

4) The power supply can be as simple as a big battery with a relay controlled by a 555 timer circuit. The latter will only give you one frequency, but since you'll be making approximate square waves, you just need the fundamental anyway; you get all the harmonics for free (look up "Fourier transform of square wave").

5) The same calculator you used in (2) will tell you the current you need (or rather, you'll have to tell it the current you plan to use).

By the way, I have a atelier robin 165 frequency generator. Can that be used in this setup?

Actually, that's even better than hacking up your own 555 circuit. Do you know the output specs? You'll be wanting it to drive a small relay to switch your Helmholtz coils on and off, so it needs to put out enough voltage/current to do that. Also, that assumes you can put out square-waves, not sines.

yes, it does put out square waves

as for the output, According to the owner's manual---

The amplitude (volume) knob controls the voltage level on output 2 (II). This is the output connector closest to the knob. It has a range of 0 to 13V in DC mode and 0 to 26 Vpp in AC mode. Voltage increases when you turn the knob clockwise

That sounds like plenty to simply control a (normally open) relay. Good luck!

And you should think about both writing an Instructable for your project, and also writing up any results you get (positive or negative!).

yes, I should write those up!

One more question. How do I connect the coils to the frequency generator? The output on the frequency generator is a BNC Port. Which of the wires from the coils do I connect to the frequency generator and how do I do that? should I use a BNC to alligator clips conversion cable?

BNC to alligator or banana plug is going to be easiest. The center pin on BNC is +V, the outer shell is ground.

On your Helmholtz coils, make sure you keep them oriented parallel (i.e., both should have the windings going the same way). Remember the right hand rule: if the wires are wound counterclockwise, the magnetic field points up out of the center.

great, thank you

Also, why did you recommend Helmholtz in the first place? Wouldn't a single coil also generate the kind of field I'm looking for?

Not really. A single flat coil produces a field which spreads out widely in space, and doesn't look like a "straight line." The Helmholtz coils produce a field which is essentially straight between the coils, and so makes a good approximation to the geomagnetic field in a local area.

Well, yes, but the uniform effect happens only in a VERY smal volume compared to the cross sectional area of the coils.


Thank you! That's a very helpful starting point, much appreciated

[citation needed]

Where do you get your claim that the geomagnetic field has 5-45 Hz "pulses"? And do you think the field actually goes to zero on those timescalse, which is what you're asking for?

So far as I know the diurnal (~ 10 uHz) field variations have an amplitude of well below 50 nT (in other words, less than 1 per mil), and the short duration (few seconds, so less than 1 Hz) variations are 1 nT or less (< 1/100,000). If you have any published research articles which have different data, please post them.

I'm speaking of the Shuman's resonance, and you make a good point, it does not go to zero but simply fluctuates, peaking at 7.8 Hz, 14, 20, 26, and 33 Hz

Thanks for the reference! I'm not a geophysicist (particle physics is my field), but what I understand is that the Shuman resonance phenomenon is electromagnetic in nature, basically cavity excitations in the ionosphere. They are not modulations of the "static" geomagnetic field.

That is, if you had a compass set up with a fast response time, you would not see it jittering at the Shuman frequencies. To see them, you have to set up a very-long-wavelength (ELF) dipole antenna, basically a radio receiver.

are you making a distinction between electromagnetic and geomagnetic?

The magnetic field of the earth IS an electromagnetic field, by which I mean it is a magnetic field that is generated by electrical activity somewhere near the center of the earth

Partially. I'm making a distinction between the geomagnetic field, presumptively generated by dynamo action in the outer liquid core, and electromagnetic waves propagating through the ionosphere. The latter are what the Shuman resonance is describing, and what radio receivers pick up. The former is what a compass responds to.

right, the Shuman's resonance is best described as the background radiation

However, that is something very difficult to replicate, so I thought I would just pulse the field