Low Frequency Hum in the Earth

Dingus nails it. Don't know how far you are from a big highway, but I've seem stories about the sound of traffic propagating over long distances and balancing out to a low hum. Admittedly not very spiritualized, but one possible explanation anyway.

Schumann resonances - Wikipedia, the free encyclopedia
en.wikipedia.org/wiki/Schumann_resonances

Just as a tuning fork has natural frequencies for sound,
the planet Earth has natural frequencies,
called Schumann resonances,
for electromagnetic radiation.

The Human Brain also has natural frequencies
for electromagnetic radiation.

It turns out that the Earth's Schumann resonances are
"in tune" with the Human Brains's Alpha States and Theta States.

Animation of Schumann resonance in Earth's atmosphere. ... It has been speculated that extraterrestrial lightning (on other planets) may also be ... Tesla discovered that the resonant frequency of the Earth was approximately 8 hertz (Hz). In the ... to be the primary natural source of Schumann resonance excitation; lightning ...

Jerry Dodrill

climber
Bodega, CA

Topic Author's Original Post - Dec 22, 2005 - 01:22pm PT
Have you experienced this?

A few years ago I was on a corniced ridge nearing the summit of a virgin peak in NW China with friends, when a big ominous cloud enshrouded us. Soon it was white out conditions, fog, driving corn snow, and super high winds. Suddenly there is a strange sound, louder than the wind, like an old radio tuner between stations. It fluctuated in pitch as you turned your head, higher to the right, lower to the left. I thought I was hallucinating (It’s day two of what was supposed to be a one day climb, turned out to be three days) and zoned out on my ice axe for a minute which also changed the pitch as I raised it and plunged it into the snow. I looked up the rope. Doug, 50’ away, pointed to his ear and shrugged his shoulders. He heard it, and below, Jed heard it too. Something slapped me in the back of the head. I raised a hand to head and received a strong static shock. Realizing we are in an electrically charged cloud I note the amount of metal on me and fear electrocution. I yell to Doug, but my words are taken by the wind. He gets shocked also, and we all start running back down the ridge. Half an hour later we are a good way down, the storm cleared as quickly as it came in and we could see that we had been spitting distance from the summit. We never heard thunder or saw lightning. Instinct said “get the F- down now” but I’ve always regretted not tagging the top.


Here the peak is hiding in cloud again, shortly after a long descent.

So far I haven’t found documentation of this strange radio sound and no clear condition reports surrounding lightning during snowstorms. We were near 18,000’ on the border of Kyrgyzstan near the Taklimakin desert, so the air was pretty dry, all things considered. We figured the snow was blowing over the cornice in a circular manner, building static between corn snow particles, it felt like we were about to be zapped. I’ve had close calls in the Sierra, but this was different. Would love to hear if anyone else has experienced it and/or can explain the physics.

cliffhanger

Trad climber
California

Dec 31, 2005 - 11:53am PT
An article I read in Science in the early 70’s told of a researcher trying to find the cause of the crackling sounds heard under very high voltage transmission lines in the interests of improving efficiency. He tried recording the sounds to no avail. There was no sound. Intense electromagnetic radiation (radio waves or microwaves) was inducing currents in the brain that were perceived as sound. The effect was reproduced in their lab

cliffhanger

Trad climber
California

Jan 1, 2006 - 02:16pm PT
From a Google search of: electromagnetic sound brain - I found a lot of info on the electromagnetic stimulation of the brain. It can cause sound, mood, and vision effects. Some research claimed almost any sound could be conveyed on radio or micro waves, even speech:

http://en.wikipedia.org/wiki/Frey_effect

http://homepages.tesco.net/~John.Dawes2/ingalls.htm

http://www.mindcontrolforums.com/mindnet/mn159.htm

http://www.rhfweb.com/hweb/shared2/Newrad.html


1. Sounds (Pings, Clicks, Other), Acoustic Messages, & Buzzing Noises my be felt near and on the human body as created by microwave pulsed adiograms or microwave synthetic telepathy being broadcasted at a human target.

2. Images, holographic images, virtual reality images,synthetic telepathic images may be felt near and on the human body as created by microwave pulsed holography or microwave synthetic telepathy being broadcasted at a human target.

http://www.datafilter.com/mc/c_controlOfChoiceAbstract.html

http://www.angelfire.com/or/mctrl/electrowarfare.html

http://www.mk-resistance.com/ecm_apps.html

http://www.sumeria.net/tech/emfwar.html

Microwave auditory effect
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The microwave auditory effect, also known as the microwave hearing effect or the Frey effect, consists of audible clicks (or, with modulation, whole words) induced by pulsed/modulated microwave frequencies. The clicks are generated directly inside the human head without the need of any receiving electronic device. The effect was first reported by persons working in the vicinity of radar transponders during World War II. These induced sounds are not audible to other people nearby. The microwave auditory effect was later discovered to be inducible with shorter-wavelength portions of the electromagnetic spectrum. During the Cold War era, the American neuroscience Allan H. Frey studied this phenomenon and was the first to publish[1] information on the nature of the microwave auditory effect.

Dr. Don R. Justesen published "Microwaves and Behavior" in The American Psychologist (Volume 30, March 1975, Number 3).

Research by NASA in the 1970s[citation needed] showed that this effect occurs as a result of thermal expansion of parts of the human ear around the cochlea, even at low power density. Later, signal modulation was found to produce sounds or words that appeared to originate intracranially. It was studied for its possible use in communications. Both the United States and USSR studied its use in non-lethal weaponry.[citation needed]

Pulsed microwave radiation can be heard by some workers; the irradiated personnel perceive auditory sensations of clicking or buzzing. The cause is thought to be thermoelastic expansion of portions of auditory apparatus.[2] The auditory system response occurs at least from 200 MHz to at least 3 GHz. In the tests, repetition rate of 50 Hz was used, with pulse width between 10–70 microseconds. The perceived loudness was found to be linked to the peak power density instead of average power density. At 1.245 GHz, the peak power density for perception was below 80 mW/cm2. The generally accepted mechanism is rapid (but minuscule, in the range of 10−5 °C) heating of brain by each pulse, and the resulting pressure wave traveling through skull to cochlea.[3]

The existence of non-lethal weaponry that exploits the microwave auditory effect appears to have been classified "Secret NOFORN" in the USA from (at the latest) 1998, until the declassification on 6 December 2006 of "Bioeffects of Selected Non-Lethal Weaponry" in response to a FOIA request. Application of the microwave hearing technology could facilitate a private message transmission. Quoting from the above source, "Microwave hearing may be useful to provide a disruptive condition to a person not aware of the technology. Not only might it be disruptive to the sense of hearing, it could be psychologically devastating if one suddenly heard "voices within one's head".

The technology gained further public attention when a company announced in early 2008 that they were close to fielding a device called MEDUSA (Mob Excess Deterrent Using Silent Audio) based on the principle.[4]

Electroreception has also been studied in the animal world. Ritz et al., in Biophysical Journal,[5] hypothesize that transduction of the Earth's geomagnetic field is responsible for the magnetoreception systems of birds. Specifically, they propose that this transduction may take place in a class of photoreceptors known as cryptochromes.

Did the pulse modulation happen to correlate with your heart rate?

Primary Cold War-era research in the US

The first American to publish on the microwave hearing effect was Allan H. Frey, in 1961. In his experiments, the subjects were discovered to be able to hear appropriately pulsed microwave radiation, from a distance of 100 meters from the transmitter. This was accompanied by side effects such as dizziness, headaches, and a pins and needles sensation.

Sharp and Grove developed receiverless wireless voice transmission technologies for the Advanced Research Projects Agency at Walter Reed Army Institute of Research, in 1973. In the above mentioned journal entry to The American Psychologist, Dr. Don Justesen reports that Sharp and Grove were readily able to hear, identify, and distinguish among the single-syllable words for digits between 1 and 10 . Justesen writes, "The sounds heard were not unlike those emitted by persons with artificial larynxes. Communication of more complex words and of sentences was not attempted because the averaged densities of energy required to transmit longer messages would approach the [still] current 10mW/cm² limit of safe exposure." (D.R. Justesen. "Microwaves and Behavior", Am Psychologist, 392(Mar): 391–401, 1975.)