Hi all! This is my first post as I just discovered this forum

I am not a physicist, and I have only one year schooling in basic electronics a long time ago, just so you know.

I want to make a device that can send electromagnetic waves to stimulate the body and pineal gland (inside the brain). The magic frequency is around 8Hz (not very high).

Now I have read about many such existing devices, but they do not come with blueprints, unfortunately. So I started some experimenting by pulling apart an old speaker to take out the coil, and I have a software that can send out a sound signal at 8Hz and I amplified that signal through an old stereo.
I know that I do now have an electromagnet which oscillates at 8Hz, but I have no idea if this is what I am looking for. The magnetic core is removed from the coil, so there is no physical vibration.

I have read that there are two kinds of waves that comes from EMs and those are E and H, and the H wave is the one useful for my purposes because it penetrates everything when working with low frequencies. Does my old speaker magnet send out H waves?

Also I have a thought that maybe I need an antenna which can send the signal in a particular direction, or can I just send the signal in any direction like a light bulb?

I am not an expert, but is it so that if I manage to make such a generator, those waves would be considered low frequency radio waves so that if I had a radio that could be tuned on 8Hz it would pick up the signal from how far away??

I want to make either some sort of wearable head band or helmet for this, or a device that can be placed on the night stand and give out smooth waves in the night.

Any ideas?

Bare in mind that any frequency that affects the brain will ultimately end up as heat - cooked brain probably doesn't work too well.

I know, I tested the coil with a frequency of 200Hz and the coil became a little heated.. but not with 8hz

Our natural brainwaves range from 1-3 Hz (coma like), and up to 15-40 Hz, and the 8Hz frequency is for meditation and dream like states

The effect of interest is not whether or not the coil becomes hot - the effect of interest is that the absorber of the rf becomes hot. See:- http://en.wikipedia.org/wiki/Radio_frequency_heating

Okay I did not think of that...
Thanks for the link, it was useful information!

What I have to consider would be the intensity of the waves and the proximity to the subject, as the frequency (8Hz) is, what I read, way within the limits (it was mentioned "heating" as low as 50-60 Hz)

But is it possible to turn an 8Hz sound signal into an electromagnetic wave the way I did with the coil? And if so, how can I measure the distance and strength? As I far as I know our brain does not fry from normal radio waves even though they are hundreds of MHz

Most hearing aids have a telecoil for old fashioned phones.
They pick up the EM from the speaker rather than the sound.
This is to prevent feedback.

In any case,coil based speakers produce EM signals when making sound.

But you might want to consider experimenting with bio-feedback devices. Once you train yourself you brain does the work and you won't need any device.

Since they goal, as I understand it, is to have the brain operate in a mode which corresponds to the normal cases of certain EEG properties, then training yourself with biofeedback techniques to achieve and maintain such EEGs seems more likely to achieve the desired result than trying to impose such EEGs from exterior EMFs.

That being said, since the interpretation of EEGs is a medical specialty and since you need your brain to interpret EEGs, successful experimentation in this field may require more than one human being and thus the concept of ethics in experimentation arises.

I recommend strongly against any attempt to influence the human brain with external fields. If you do succeed in modifying the operation of your brain, how would you be in any position to judge if that change is beneficial or the opposite?

Of bio-dfeedback..
As a matter of interest - can you slow your heart-rate down? (52 bpm was my record )

I have not heard much of bio-feedback devices...

However what I do to my own brain is my responsibility, just as the ethics of taking alcohol I am not going as far as using test subjects beside myself, hehe

ht tp://w ww. zephyrtechnology.com/The_ELF_Generator/the_elf_generator.html
(remove spaces)

The link is showing what I understand being a complicated device, maybe there is an easier way..?

Anyways, I'll go have a look at bio-feedback devices!

Perhaps you should dig through old Nikola Tesla materials. He was very much interested in that sort of thing.

I hope this is not a completely idiotic question, but what are these EEG's and this Biofeedback?