Faraday Cage Type Shielding for Human Health

The average naturally occurring EM produced by the earths magnetic fields and the electrostatic energy of the atmosphere around your home is between .3 and .6 gauss.

A neodymium magnet is around 10000 - 15000 gauss.

Man made EM energy averages in the tens of milligauss levels at most. (less than .040 gauss).

There are more constructive and better things for you to worry about really.

Hi,

I did not mean the magnetic fields... Especially natural one.

What I meant was the high frequency electromagnetic fields and their avoidance...

By the way, natural magnetic field is needed for humans' well being so that is opposite to what I seek.

Thnx

GA Guest. This certainly met my "does the answer make me laugh" criteria.

Ed Weldon

On a serious note, don't spend too much time with your nose glued to the door of your microwave oven. That can be a risk to the health of your retina.

As far as my education in the natural sciences has explained it nature is pumping out far more RF energy than anything us mere humans ever will. When you tune the older analog radio or television to a dead channel that static is not the sound of nothing but rather the sound of everything nature is producing all at once!

Its basically the "white Light" of natural RF energy. Its just as natural as the magnetic field the earth produces and shows up on any gauss meter as the ambient background energy that represents that .3 -.6 gauss level thats all around us.

tcmtech,

why dont you move on to RF and in RF drop the white noise? White noise is not even in the level of 1micro watt/m2. Who cares about it when a simple base station can generate over 2000 micro watt/m2?

Natural magnetism is mostly dc and up to 5 Hz there are ac elements. But when a pregnant woman is exposed to UPS or cable magnetics their abort percentage is triple if not quadrupled!

I am talking health here... Your education is good but if you wont put into it NEW artificial sources then your comments are obsolete... Maybe you know HAARP and you are very pessimist... In any case, we should not stop fighting...

I wasn't aware we where fighting. When did this come about? I am a guy so pregnancy has not really ever been a health issue I needed to concern myself with either. I also work with and around higher powered electrical equipment as well and so far have never been given a justified reason for personal health concerns outside of electrocution. I hear scaremonger stuff all the time about EM and RF fields but it seems to always come from sources well known and associated with having less than honest intentions.

If you have a problem with what and how I was educated take it up with our educational system and the whole of the internet and everyone who put information out there with less than honest intentions.

I can only relate what I understand to be true and what I see as realistic. If I have been educated wrong than thats the problem and if so then educate me in a way I can see to be true.

But be careful I do check peoples math and reference sources and if you get into Eco preaching or scaremongering I stop listening strait off!

I think a fine platinum mesh, welded at the cross connections would work perfectly well if sutured to the skull beneath the scalp. It would not corrode, it would shield your brain from RF and would give the heirs something to look forward to in the ashes

tmctech,

I do not fight with you for I enjoy the forum and people here... You are one of them so no offense...

I am not preaching about the "green" bla blas either for I simply do not believe in those people as you do not. When one makes a clear accounting of those trends, one generally finds out more negative stuff than the positive ones...

As my professor taught me to check the bottom line in all environmental protection issues... It is the water you waste and the energy you use... Simple principle...

So once again about wellness, earth magnetic field is fine and necessary (Space illnesses first astronauts and cosmonauts suffered), there is electrical fields on earth as well, then there is Schaumann resonances (7.8 Hz primarly and goes on to 70 Hz or os) where the brain frequencies are directly affected by those as well...

http://www.emf-portal.org/ here is some more info for the interested....

"But when a pregnant woman is exposed to UPS or cable magnetics their abort percentage is triple if not quadrupled!"

Can you please link to a reference supporting that assertion?

I think he's probably comfortable with the natural magnetic and electrical fields, but is concerned about the man-made stuff like the ever increasing 1 to 4 ghz range radiation. Cell phone use continues to explode and adequate testing of this range of radiation on humans over time has yet to be properly carried out. The number of brain tumors in people who frequently use cell phones is increasing as fast as cell phone growth and misinformation and cover-ups are already starting to cloud the issues of cell phone safety. Certainly a lot is at stake - as was when tobacco companies hired scientists to testify that smoking was perfectly safe.

The natural EMF is good for us, it's part of the environment that our bodies work in, like the ratios of gases in the atmosphere. If ratios and levels of atmospheric gasses were to rapidly and dramatically change it's more than likely we would struggle or die. Sure all the gasses are safe - but only within ranges of concentrations.

There is also concern, I'm sure, about the ignorant if not malevolent use of things like project HAARP.

It's naive and possibly even a bit foolhardy to plow through life without ever taking a cautious look at the road ahead.

Our governments only watch over our safety when it's profitable for the politicians to do so - and they will hide from us important information regarding our safety for as long as they can continue to profit from our actions.

"The number of brain tumors in people who frequently use cell phones is increasing as fast as cell phone growth"

Is this real? So where are the data? Who published?

RHABE

There is a german site http://www.emf-portal.org/

You can read for your eyes and get your own opinion. They write pros and cons and they do not have any bias... A german quality I can say...

But what I read myself it that there is a higher probability of cancer growing on the side you used to talk with mobile around 3 times more. Once again you can question the source...

Try reading the effects of EMR on bees and birds first (scribd.com may help)... I cant trigger an immediate pradigm shift to you for you will simply deny it by your own ego... So relax and slowly enjoy your trip...

That type of site is common in many areas.

It masks itself under the guise of an honest and unbiased site, and gives you links that try to gradually bring you to their biased conclusion.

You see them on zero point energy, free energy, homeopathic meds, vaccination/autism, acupuncture, global warming/cooling, nuclear power plants and on and on as well as cell phone cancer.

Hi uluaydin,

I had only a quick look, I cannot search the whole cited literature, but as you think that there may be an effect, so in which article is this reported?

RHABE

Hello Rhabe,

http://www.scribd.com/doc/15626453/Bees-Birds-Mankind-Destroying-Nature-by-Electrosmog-Ulrich-Warnke

start with this...

check also George Carlo; Magda Havis; Olle Johannson...

For more I may seek but today...

Selam, Uluaydin

For a room, if thats what makes your clock tick, I would recommend that expanded steel, zinc coated metal for all the walls. Secondary doors of the same metal for the doorway(s) and windows is a good idea, all connected together and to ground.....

Use only battery powered things inside the room, no mains to be inside either....

The metal should look something like this:-

....and each section must be bonded well (electrically) to each other section. Don't forget the ceiling and floors either!

I'm of the opinion that the holes in expanded metal are too large. The hole size in the screen in a microwave door are universally the same size, and microwaves operate in the 2.4 ghz band, a popular band for a lot of consumer products like cordless phones, radio control, wireless cameras, cordless mice, bluetooth, etc. Bluetooth and cordless mice have very low power and a range of several feet at best, and wireless cams on that band aren't good for more than 100 yards with clear line of sight, but my 2.4 Ghz r/c transmitter will control a plane with a 6 foot wingspan further away than I can see it.

Its true that with the right measuring equipment, you can measure a slight leak right up close to the mesh, but if you move the equipment only a foot away, you may actually then measure absolutely nothing.....maybe even at half a foot even......

Frequency does make a difference, but its almost not worth mentioning.....

Remember, a Faraday's Cage does not have to be "watertight!"......

Look at these videos, it should set your mind at rest, especially the last one!!

http://www.youtube.com/watch?v=mUWxYesR5Wo

http://www.youtube.com/watch?v=WqvImbn9GG4

http://www.youtube.com/watch?v=bZwlD-Z0zmE

this demonstrates AM radio being blocked by a Faraday cage while allowing higher frequencies to pass through

http://www.youtube.com/watch?v=t23iXhEiQUc&feature=related

You have to remember that you are talking of probably micro if not Pico volts......in comparison to a mains connection or a mobile telephone, thats a very small amount.

To get 100% blocking of all frequencies will really cost, most people will be happy to get 95%.....for small (relatively) money!

Build your house out of metal shipping containers.

Here are a couple of peer reviewed references on the "is there a health risk from cell phones" issue, from the National Library of Medicine (PubMed). I found two recent reviews of the many many many studies on this issue (2009).

This review reports "CONCLUSION: The current study found that there is possible evidence linking mobile phone use to an increased risk of tumors from a meta-analysis of low-biased case-control studies. Prospective cohort studies providing a higher level of evidence are needed."

This review says "Overall the studies published to date do not demonstrate an increased risk within approximately 10 years of use for any tumor of the brain or any other head tumor". Long term risks for slow growing tumors need more study. and the reason why a subset of studies shows appreciable elevated risks is unknown.

At this stage nothing causal will be provable in a court of law. It is a matter of personal choice - are you concerned enough to take a precautionary approach, or do you prefer to wait for more evidence of a risk. If it's just as easy to take precautions, then why not - you don't need overwhelming proof for a man to decide not to use your cell phone between your legs.

I think it's pretty clear though, that the emissions of concern medically are those coming from a cell phone placed right next to your head, frequently (and maybe always on the preferred side) for a period of ten years or more. Ambient exposures from everybody's cell phone use are infinitisimally smaller than those which have been rigorously studied in people with occupational high doses. Power density falls off rapidly with distance from the source.

There's no need for a Faraday cage, for concerns about stray ambient exposure by cell phones - just don't use a cell phone, or limit your use, or get a shield for your phone, or use a headset (and never between the legs, mind you! ).

If you are still concerned and want to try Faraday, then the "sleeping area" is easiest to resolve - like the heavy-duty Faraday canopy towards the bottom of this page.

Be more concerned about 50/60 cycle radiation (domestic power supply) than high frequency radiation. There is considerable evidence that this is more harmful.

recently friends daughter had head aches and other problems for a number of years found she was sleeping with head near house power distribution board, moved her across room problems declined over time, now no problems.

Woman breading cats under high tension power lines, lots of deformed kittens. Moved away no more deformed kittens.

Like the cell phone against your head, localized sources in the home are more of an issue than stray HF. Some appliances produce a lot of EMR. A faraday cage wouldn't help that - best approach is to use test equipment to locate problem sources, then get rid of them or else position your bed or your work area away from them.

As for the power lines, there are often other issues in those areas as well, which are even worse, afaik. Defoliants are often used to keep vegetation away from the lines, so the ground is toxic as well.

Have you ever sighted along a road that has a row of palm trees and power lines? the trees all make a very distinctive and uniform bend away from the lines.

Or maybe the road clearing allows wind to get in only one way. Or the exhaust polution flowing into stomata. or roots arent growing towards one area................

There are a small percentage of people who are sensitive to low level, low frequency sources like home AC power at 50 or 60 Hz or lower frequency harmonics. Symptoms are usually headaches, nausea due to flickering fluorescent lights as an example. If you are one of theses very sensitive people change your light source to a LED's , Halogen, etc...

If you really want to make a Faraday cage in your bedroom, use conductive paint for the walls and fine stainless steel see through mesh screening for the windows then interconnect all materials and make a single ground point to earth ground of AC outlet.

For pregnancy relation

http://cellphonesafety.wordpress.com/category/magnetic-field/

http://www.bbemg.ulg.ac.be/UK/3EMFHealth/BBEMG2006(1)UK.pdf

I could not find the material in ILO which I have met in occupational risks part. Internet is a library which one can rely on...

regards,

"Internet is a library which one can rely on..."

I think you summed up the problem rather nicely.

Sorry John I meant "cant" rely on... missed the "t"

I have met with such occupational material before but this time I could not...

One "t" may change it all.

I had a visit to electric distribution company once and they strictly avoid talking about these issues...

Regards, NKU

The OP should be more concerned about neutron radiation from space (I believe it is 11 neutrons/cm^2/hour at 0 elevation) and all the natural uranium in rocks. Also what about the waves? When RF photons hit a molecule they cant do a whole lot except heat.

To protect from most used radio waves chicke wire would do it has to be electricly linked and the room/ house completly covered,

to test if it works get a gsm phone and see if you get a signal, if you do its not working.

for complete protection cooking foil would be the best option and cheaper.

it may help if you are concerned to get a frequncy counter and check what frequencies are near you.

are there any communication dishes nearby and i dont mean sat dishes which are receivers and not transmitters.

comms dishes normaly point to each other line of site, but there is a spill over effect called fresnel out side the main beam, so if a beam is going close to your house although you wont get the full power from the beam you will get some of the spill over.

imagine a ripple in a pool the beam is the main splash in the middle and the ripples are the spil over.

typicla human reactions to radio waves, thermal heating." eyes have a problem as they have no nearves for this" hence dont stick your nose against a microwave door.

headaches buzzing noise tense feeling but be carefull not to confuse these symptoms with medical problems.

you need to give moor information about the reason for the screening for us to suggest a better course of action

My personal belief is that 60Hz power is generally benign as it exists. The fields are sinusoidal in nature (both magnetic and electric). I do think however that when power is switched in high current appliances like hair dryers, hair clippers, toasters, etc. that it is the hot switching that may be harmful. What I mean by this is that when the appliance is turned on or off, the point in the 60 cycle phase is arbitrary. There are comparatively large field transients that will exist as you get closer to turning on the appliance at the peaks of the sinusoidal voltage. The field strengths (Volts/Meter) are higher, as the appliance is essentially stepped from 0VAC to 115VAC instantly at the sinusoid peaks, rather than starting and stopping sinusoidally from 0VAC.

I have read studies that have investigated how far 700mW cell phone transmissions penetrate human tissue, and it is not that invasive. It does not get into the brain. I do not recall how deep, but maybe a few millimeters. It is on the web if you Google it, I am sure. If there was an effect I am sure that you would see much higher correlations of the gigahertz use and brain cancers.

Faraday cages would reduce exposure (grounded copper screen), but there are many more significant issues to contend in air and foods.

http://timesofindia.indiatimes.com/home/science/Continuous-computer-work-causes-insomnia-Study/articleshow/32764509.cms

This is in reply to people who made the tinfoil hat jokes. This article refers to a study that was published in a peer-reviewed journal--the American Journal of Industrial Medicine--about exposure to electromagnetic fields being linked to depression, insomnia, and irritability. I can't link to the article itself because access is restricted to those who pay for it, but anyone who doubts the possible harm from electromagnetic fields can check this out for himself or herself.

It is easy to ridicule people with tinfoil hat jokes but it is a lot more difficult to actually take the trouble to do the research.

You may use films or EM curtains for the windows while paint seems to be the only reasonable solution for the walls. I mean EM paints...

You are welcome... :-)

I live in a condo building that has approved installation of a Sprint cell phone antenna on our roof, right over my unit. It's a newish concrete building, but I don't know enough about the construction to say how much concrete/metal were used. To shield myself from the radiation, I supposed I'd have to put foil up on the ceiling, then another layer of wallboard? I'd welcome any suggestions. Or maybe I just need to move :)

The Condo managers want to suck in rent. Might be only $50/month? Find out.

It might be that the owners will want to pay the same amount to management to not put up the antenna. It all depends on the rent and what it would cost to get rid of it. If management objects to this, they are being bribed?

Management in condos seek little things like this. They may also accept a bribe to choose a particular cable TV or Satellite TV provider. They do this in Toronto

The antenna deal is going to be a very big moneymaker for the building, and only a couple other owners voted against it, so I'm basically on my own.

Well, if they have 20" antennas, and all manner of related radio services, it could be a cash cow.

A friend of mine obtained a 30 year roof lease for antenna construction back in 1969 for a nominal fee on a large high rise apartment structure that overlooked all of downtown Toronto before radios etc were big stuff. He was to maintain it, route the wires, pay for power, any taxes levied etc for $100/month. The apartment owners had no idea of the potential earning power.

By 1979 he was grabbing $7000/month from many tenants and the landlord was hoping he would fail to pay rent and had their lawyers try to break it. At the end he was netting over $20,000/month when it expired

Of course, when it expired, they would not renew, and so his final action was to tell all his tenants they had to vacate and re-site their services because he had to remove all the gear at the end of the lease ...it was in the lease - he had to restore the site to pristine shape, and he was going to remove it. He advised them this and they then bought his antennas and equipment for over $100,000.

He had duplexers and switches and 3 phase power to the top floor etc for a large multiple transmitter/antenna farm. His approach to rental was to buy the antenna and include it in the rent for a multi-year lease and he equipped it with a number of duplexers for the bands he dealt with.

For the landlord to buy the equipment and get the antennas permitted would mean huge cost and delay for site surveys etc. a huge proportion of the tenants would relocate and be gone forever and to rebuild his site would cost $400,000 or so.

They were over a barrel, and they paid.