Facts and Fiction of the Schumann Resonance

This cavity in our atmosphere resonates radio frequency at 7.83 Hz. But is that all it does?

by Brian Dunning

Filed under Environment, General Science, Health

Skeptoid #352
March 5, 2013
Podcast transcript | Listen | Subscribe
Also available in Russian

It's increasingly hard to find a web page dedicated to the sales of alternative medicine products or New Age spirituality that does not cite the Schumann resonances as proof that some product or service is rooted in science. This mysterious number of 7.83 comes up again and again in sales pitches, as a sort of miracle frequency that can bring you health and wellness. Today we're going to see what the Schumann resonances actually are, how they formed and what they do, and see if we can determine whether they are, in fact, related to human health.

In a nutshell, the Schumann resonances are the name given to the resonant frequency of the Earth's atmosphere, between the surface and the densest part of the ionosphere. They're named for the German physicist Winfried Otto Schumann (1888-1974) who worked briefly in the United States after WWII, and predicted that the Earth's atmosphere would resonate certain electromagnetic frequencies. The closed space inside a bottle has a resonant frequency which becomes audible when you blow across it:

This particular bottle has a resonant frequency of about 196 Hz. That's the frequency of sound waves that most efficiently bounce back and forth between the sides of the bottle, at the speed of sound, propagating via the air molecules. Electromagnetic radiation is similar, except the waves travel at the speed of light, and do not require a medium like air molecules. The speed of light is a lot faster than the speed of sound, but the electromagnetic waves have a lot further to go between the ground and the ionosphere than do the sound waves between the sides of the bottle. This atmospheric electromagnetic resonant frequency is 7.83 Hz, which is near the bottom of the ELF frequency range, or Extremely Low Frequency. The atmosphere has its own radio equivalent of someone blowing across the top of the bottle: lightning. Lightning is constantly flashing all around the world, many times per second; and each bolt is a radio source. This means our atmosphere is continuously resonating with a radio frequency of 7.83 Hz, along with progressively weaker harmonics at 14.3, 20.8, 27.3 and 33.8 Hz. These are the Schumann resonances. It's nothing to do with the Earth itself, or with life, or with any spiritual phenomenon; it's merely an artifact of the physical dimensions of the space between the surface of the Earth and the ionosphere. Every planet and moon that has an ionosphere has its own set of Schumann resonances defined by the planet's size.

The amount of resonance fluctuates as the ionosphere becomes more or less dense, which depends largely on the amount of solar radiation striking it. At night, that part of the ionosphere that's in the Earth's shadow thins out. Another influence is that the world's three lightning hotspots — Asia, Africa, and South America — also follow a day/night cycle, and are seasonal as well. Thus, the peaks of radio signal strength at the Schumann resonance follow a constantly shifting, but reasonably predictable, schedule.

A very important point to be aware of is that this resonated radio from lightning is a vanishingly small component of the electromagnetic spectrum to which we're all naturally exposed. The overwhelming source is the sun, blasting the Earth with infrared, visible light, and ultraviolet radiation. All natural sources from outer space, and even radioactive decay of naturally occuring elements on Earth, produce wide-spectrum radio noise. Those resonating in the Schumann cavity are only a tiny, tiny part of the spectrum.

Nevertheless, because the Schumann resonance frequencies are defined by the dimensions of the Earth, many New Age proponents and alternative medicine advocates have come to regard 7.83 Hz as some sort of Mother Earth frequency, asserting the belief that it's related to life on Earth, despite its being so tiny and lost among all the other, stronger parts of the electromagnetic spectrum. Often we find that New Age beliefs are often based more on what seems emotionally satisfying than on sound science.

The most pervasive of all the popular fictions surrounding the Schumann resonance is that it is correlated with the health of the human body. There are a huge number of products and services sold to enhance health or mood, citing the Schumann resonance as the foundational science. Before looking at some of these claims in detail, it's noteworthy that neither Schumann resonances, electromagnetic radiation, or the Earth's ionosphere are mentioned in any medical or anatomical textbooks. There is no detectable or theoretically predicted relationship between either ELF radio or the number 7.83 and the health of human body. But let's look at some of the claims.

Many marketers of jewelry that claims to provide health or sports performance benefits cite the Schumann resonance as the science behind their claim. A notable example is the Power Balance bracelets. Tom O'Dowd, formerly the Australian distributor, said that the mylar hologram resonated at 7.83 Hz. When the bracelet was placed within the body's natural energy field, the resonance would "reset" your energy field to that frequency. Well, there were a lot of problems with that claim. First of all, 7.83 Hz has a wavelength of about 38,000 kilometers. This is about the circumference of the Earth, which is why its atmospheric cavity resonates at that frequency. 38,000 kilometers is just a little bit bigger than a 1 or 2cm hologram; there's no way that something that tiny could resonate such an enormous wavelength. O'Dowd's sales pitch was implausible, by a factor of billions, to anyone who understood resonance.

This same fact also applies to the human body. Human beings are so small, relative to a radio wavelength of 38,000 kilometers, that there's no way our anatomy could detect or interact with such a radio signal in any way.

Proponents of binaural beats cite the Schumann frequency as well. These are audio recordings which combine two slightly offset frequencies to produce a third phantom beat frequency that is perceived from the interference of the two. Here is a common binaural beat recording that produces a beat frequency of 7.83 Hz:

Claims for how this benefits the body are diverse, but most either say something generally similar to what O'Dowd said, or they would claim to change your brain's encephalogram, which they say is a beneficial thing to do. Brain waves, the fluctuations of current in the brain as measured at the scalp by an electroencephalogram, can range from near zero up to about 100 Hz during normal activity, with a typical reading near the lower end of the scale. This happens to overlap 7.83 — suggesting the aforementioned pseudoscientific connection between humans and the Schumann resonance — but with a critical difference. An audio recording is audio, not radio. It's the physical oscillation of air molecules, not the propagation of electromagnetic waves. The two have virtually nothing to do with each other. Audio waves do not affect radio waves, and vice versa. So by no science that's understood would we expect an audio tone to cause a brain's activity to change its frequency to match.

There's a complete Skeptoid episode on binaural beats that addresses the claims in greater detail, and examines some of the research done.

I found one website, EarthCalm.ca (just as one example among many), that says:

Scientific research has recently determined how the human body receives and uses the important information from the Earth's field: 7 billion crystalline magnetites in the human brain, in addition to DNA and the pineal gland are meant to receive guiding information from the band of electromagnetic frequencies that extends from the Earth's crust to the ionosphere (Schumann Resonances). Today, the Earth's field is polluted with man-made frequencies, so the human body instead receives "junk" produced by AC electricity and wireless technology.

Variations on this specific claim are fairly ubiquitous, that our bodies' energy fields need to interact with the Schumann resonance but can't because of all the interference from modern society. It's all complete and utter nonsense. Human bodies do not have an energy field, in fact there's not even any such thing as an energy field. Fields are constructs in which some direction or intensity is measured at every point: gravity, wind, magnetism, some expression of energy. Energy is just a measurement; it doesn't exist on its own as a cloud or a field or some other entity. The notion that frequencies can interact with the body's energy field is, as the saying goes, so wrong it's not even wrong.

Another really common New Age misconception about the Schumann resonance is that it is the resonant frequency of the Earth. This is also completely wrong. Take another listen to blowing across the bottle:

The space inside the bottle resonates at 196 Hz, a G on the musical scale. But listen when I tap the bottle itself:

Tip Skeptoid $2/mo $5/mo $10/mo One time

The resonant frequency of the glass bottle itself is about 3520 Hz, which is an A on the musical scale. Two completely different notes. That's because the bottle and the space inside are two different things, with not necessarily any relationship between them. Similarly, there's no reason to expect the Earth's electromagnetic resonant frequency to bear any similarity to the Schumann resonance. But, furthermore, the Earth probably doesn't even have a resonant electromagnetic frequency. Each of the Earth's many layers is a very poor conductor of radio; combined all together, the Earth easily absorbs just about every frequency it's exposed to. If you've ever noticed that your car radio cuts out when you drive through a tunnel, you've seen an example of this.

Now the Earth does, of course, conduct low-frequency waves of other types. Earthquakes are the prime example of this. The Earth's various layers propagate seismic waves differently, but all quite well. Seismic waves are shockwaves, a physical oscillation of the medium. Like audio waves, these are unrelated to electromagnetic radio waves. Each and every major structure within the Earth — such as a mass of rock within a continent, a particular layer of magma, etc. — does have its own resonant frequency for seismic shockwaves, but there is (definitively) no resonant electromagnetic frequency for the Earth as a whole.

So our major point today is that you should be very skeptical of any product, service, article, website, or merchant who uses the Schumann resonance, in any way, as part of a sales pitch. The Earth does not have any particular frequency. Life on Earth is neither dependent upon, nor enhanced by, any specific frequency. Most of these sales pitches are what we in the brotherhood like to call a Word Salad, sciencey-sounding language thrown together in such a way as to sound impressive to the layperson. There's plenty of sciencey goodness in understanding why and what the Schumann resonances actually are, without co-opting them to promote nonsense.

Correction: An earlier version of this incorrectly described 196 Hz as the speed at which the waves bounce back and forth between the sides of the bottle, which is wrong.

Correction: An earlier version also stated that electromagnetic waves propagate via electrons, which was an ill-conceived "journalist's shortcut." Electromagnetic waves do not require that electrons be present.

Brian Dunning

© 2013 Skeptoid Media, Inc. Copyright information

References & Further Reading

Editors. "How Radio Communication Works." National Radio Astronomy Observatory. National Science Foundation, 17 Aug. 2008. Web. 2 Mar. 2013. <http://www.nrao.edu/index.php/learn/radioastronomy/radiocommunication>

Kruszelnicki, K. "Sceptics, energy fields and busting myths." Dr. Karl on Triple J. ABC, 25 Nov. 2010. Web. 2 Mar. 2013. <http://www.abc.net.au/science/audio/2010/11/25/3076448.htm>

Nickolaenko, A., Hayakawa, M. Resonances in the Earth–ionosphere cavity. Dordrecht: Kluwer Academic Publishers, 2002.

Pechony, O., Price, C. "Schumann resonance parameters calculated with a partially uniform knee model on Earth, Venus, Mars, and Titan." Radio Science. 9 Oct. 2004, Volume 39, Number 5.

Rakov, V. Lightning: Physics and Effects. Cambridge: Cambridge University Press, 2003.

Shelikoff, M. "Ask the Experts." Physics and Astronomy Online. PhysLink.com, 15 Nov. 2001. Web. 2 Mar. 2013. <http://www.physlink.com/education/askexperts/ae175.cfm>

Reference this article:
Dunning, B. "Facts and Fiction of the Schumann Resonance." Skeptoid Podcast. Skeptoid Media, Inc., 5 Mar 2013. Web. 28 Jan 2015. <http://skeptoid.com/episodes/4352>


10 most recent comments | Show all 120 comments

Dear Skeptoid

Good that you're calling people on what appear to be blatant attempts to make money out of the scientific ignorance of the general population. However, scientific ignorance does cut both ways .... re your claim that humans do not produce an "energy field", you might like to Google electroencephalography (EEG). Whether or not you choose to label it an "energy field", human brains do produce measurable electromagnetic oscillations, which are so easy to record that they are used diagnostically on a daily basis in every hospital in the developed world. And interestingly, the 'alpha rhythm' actually is a major blip in the power spectral density of these oscillations, at 7-14 Hz.

Who knows if this has anything to do with the Schumann resonance, but the coincidence is mildly intriguing.


Sam, New Zealand
June 19, 2014 4:14pm

A great explanation, thanks skeptoid. I'd like to see more information about resonation: how whatever electromagnetic waves whether weak 7.83Hz or electrosmog at 50 or 60 can affect materials and the animals or human body. What magnetic particles (as in birds) react to field directions, how can be audio vibration induced in the body (a dancing of the cells)?
There is an really great cartoon explanation of chemical/brain resonance here: Hidden in Plain Sight by Steven Lehar http://cns-alumni.bu.edu/~slehar/HRez/HRez.html

Graham, Berne / Switzerland
August 1, 2014 8:16am

NASA studies and other studies confirmed the absence of pulsed magnetic fields will detrimentally affect humans, both physically and mentally. So recreation of the earth's pulsed magnetic field is deemed essential for space travel. Magnetic fields pulsing as the Schumann frequencies.

As I read your article, very well written to promote your agenda, I noted that you stated " it's noteworthy that neither Schumann resonances, electromagnetic radiation, or the Earth's ionosphere are mentioned in any medical or anatomical textbooks. "

Which I interpret to mean that mainstream or institutional medicine doesn't recognized these frequencies as essential or meaningful.

This brings to mind the Semmelweis case. A physician that was ostracized and imprisoned in the late 1800s for espousingt a new procedure that also was not documented in mainstream medical or other textbooks. His procedure? For docs to wash their hands.

You see, science is still progressing, medicine is still progressing. Then and now. Just because it's not recognized by institutional medicine doesn't make it invalid.

Also, it's coming out that choosing to go into the hospital system in the US puts you in a 50/50 chance of being harmed in a way unrelated to your initial affliction. Infections, mistakes, prescriptions with serious affects.

Institutional medicine is extremely dangerous right now, and getting worse. Articles like this only serve to close down thinking, to assume institutional medicine is the only way

Generine, NYC/NY
October 3, 2014 7:52am

The NASA info is easy to find, here are two references. NASA has spent a lot of money and time understanding how to heal, because it will be essential for successful long term space travel.



Of course there are always those close-minded people who will attempt to shut down progress of any sort. Apparently this website abounds with them. I'm leaving here never to return.

Generine, NYC/NY
October 3, 2014 8:20am

The NASA research team headed by Dr Diane Byerly, Johnson Space Center:
Marguerite Sognier, Johnson Space Center
Dickey Arndt, Johnson Space Center
Phong Ngo, Johnson Space Center
Chau Phan, Johnson Space Center
For microwave research pertaining to disinfection and would treatment with microwave frequencies in space see http://research.jsc.nasa.gov/PDF/SLiSci-7.pdf

It will always be that skeptics and enthusiasts will disagree, even among themselves. This is why it takes generations to fully explore, document, and understand phenomena we notice. There is always observer zero who cannot explain or justify what they remember. The scientific skeptic who is honest will not declare what is or isn't, just because it hasn't been studied enough to supply proofs everyone will accept. NASA is studying phenomena that were previously ignored or discounted, and China is certainly exploring applications of things considered "fringe" or fantasy. There is a lot more to this than a skeptical discussion can address. Let us wait for developments before discounting in toto, ok? We are still in Kansas, aren't we?

DO'H, Nation's Capitol
November 3, 2014 8:14am

Brian, some of your claims seem to be unaware of what official studies have been conducted regarding Extremely Low Magnetic (ELF) fields and precautionary exposure standards. The World Health Organization report "Extremely Low Frequency Fields Environmental Health Criteria Monograph No.238" (2007) does discuss the Schumann frequency & the known biological and adverse health affects of ELF. Here is the link to the report: http://www.who.int/peh-emf/publications/elf_ehc/en/ . Your article also includes a quote regarding magnetite in the human brain but then just leave it at that. Some animals navigate via the Earth's magnetic field which guides them & store information from it in their brains. Magnetite is a strong candidate for that reception and storage. Humans do have the mention level of magnetite crystals in their brain & nobody is sure why. They form chains of several dozen crystals called magnetosomes which align when the Earth's magnetic field is quiet and slightly disperse and do not align when the Earth's magnetic field is active such as during geomagnetic storms caused by solar flares and coronal mass injections. Here is a full journal article in about magnetite: "Information storing by biomagnetites"by Istvan Bókkon & Vahid Salari in Journal Biol Phys. Jan 2010; 36(1): 109-120. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2791810/ . And here on ELF effect on stockmarket: Fed Reserve Bank of Atlanta, "Playing the Field" www.frbatlanta.org/filelegacydocs/wp0305b.pdf

Nick, Australia
November 26, 2014 11:01am

Sorry, but this is total nonsense and is based on opinion not science. I would be very skeptical of this writer's claims.

Barrie, Corpus Christi, TX
December 5, 2014 11:30pm

Brian, it looks like you don't know anything about the seven chakras in the human spine. In fact, these chakras are energy centers and the descriptions are well illustrated in scientific research and Vedas. You can google it and read for yourself to understand. Do you believe in hypnotism, mind reading, sympathetic vibration etc? It looks like you have not researched enough. US and Russia have spent a lot of money on mind related research. Many of the reports are available to public.

Kris Chellappa, Atlanta, GA
December 28, 2014 5:31am

Dr. Valerie Hunt, the former professor of physiology at UCLA did a number of studies in which she has found that changes in the ambient EM field (that surrounds us all the time) can dramatically affect human cognition and performance. Look it up.

Antoinette, Johannesburg
January 8, 2015 4:23am

Dear Skeptiod:

A couple of years ago I had the opportunity to find out first hand the validity of the medical benefits of the Schumann resonance frequency. I had had a pain in my right elbow for over a year. I suspect that it was tendinitis but I had not treated it with ice or any medication when by chance a friend of mine introduced me to a medical device known as a Tenscam, which is an non-contact electrical device that emits the Schumann resonance frequency (I assume in the form of electromagnetic radiation, since it has a quartz oscillator). I was asked to stand with my elbow two feet way from the device for two minutes. Now I believe that a certain degree of skepticism is healthy and it was with this state of mind that I tried the device. On that day the persistent pain in my elbow disappeared and has never returned. Below is a link to the company who manufacture these devices.



Clive, Littleton, MA
January 15, 2015 5:46am

Make a comment about this episode of Skeptoid (please try to keep it brief & to the point).

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