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Electromagnetic pollution












I erased the first content of this page for two reasons: it became way too long a blog and I was accumulating errors. Most Web sites on the subject of the electromagnetic pollution contain heavy misjudgments and ugly mix-ups of scientific data. At least I try to better my understanding on the subject... These are my conclusions so forth:

  • Most people are not affected, even by quite high radiation levels.

  • Some people are affected by high frequency radiations like those produced by cell phones. Other people seem to be rather affected by low frequency radiations like the ones produced by economic lamps, low quality switching power supplies and radio broadcasts.

  • It seems that high frequency radiations, like cell phones and Wi-Fi, need more power to be disturbing than low-frequency radiations.

  • According to the anecdotes I heard and my own experience, the problems caused by parasitic radio waves seem to accumulate and decrease over periods of several tens of minutes. For example, if I slept inside my protected tent, I can behave for tens of minutes in a radiated environment with no problem. Then the problems appear and build up. Back in the tent, I will start to feel the benefits maybe after a quarter of an hour and I may have to wait an hour to be fully operational again. This is compatible with the idea that the radio waves have no direct impact on the nervous system but that they hamper and fiddle with the slow chemistry of the brain cells.

  • The problems endured vary from person to person: some have headaches, other cannot concentrate, yet others get irritable.

  • Power lines do affect some people strongly. The solution would be to use DC current power lines. I believe that the burial of power lines is not a perfect solution.

  • Cell phones and Wi-Fi only emit radio waves when they need to. Most of the time, when they are switched on, but not used, they emit nothing at all. I made measures in a building where people were complaining about the Wi-Fi. Actually, the Wi-Fi and cell phones radiations were so low I was not able to measure them. Obviously the problems arose from economic lamps, some fluorescent lamp holders and from low frequency radio waves coming from the outside. The same way, a friend has to switch of his Wi-Fi router in order to sleep well but obviously the problem is not due to the Wi-Fi radio waves. Rather it is due to the low quality power supply of the Wi-Fi router.

  • I have no proof of this but I presume that in some cases the radiations cause permanent damage to the brains of children. When I hold an economic lamp for an hour 30 centimeters from my head, I got nausea and a painful feeling as if my brains had been burned by a torch. This lasted for hours. I'm sure that this can harm children. Though I cannot directly feel the effect of those lamps at a few meters distance from them, I removed all of them from my habitation. After a few days, I had the subjective but clear feeling that this was a sound decision.

  • My habitation is strongly exposed to low frequency waves coming from the outside. I now sleep in a little tent that I surrounded with metallic shieldings. This made a huge difference on my mental health. Below is a picture of the first way I tried to shield my tent, using survival blankets. It was dangerous because of a risk of suffocation, I believe the blankets released aluminum vapor and the low electric conductivity of the blankets yielded a poor shielding. But everybody loves that picture. I now still use the survival blankets but only because they keep the tent hotter when I'm inside. I'll remove them in the summertime. And I taped the blankets in a way that the aluminum deposits are now enclosed, facing each other.




  • Some countries impose 30,000 mV/m as a limit, others impose 5,000 V/m and yet others impose 100 mV/m. Obviously, for sensitive persons, the latest limit is the only reasonable. Even so, I prefer to work in places with a radiation level close to nothing.

  • Shielding is an art. When I first tried to shield my tent or my body, I got severe headaches. Some of those problems mays be caused by aluminum vapors released by the aluminum foil I used but obviously a wrongly shaped shielding can concentrate the problem caused by the radio waves. Some shapes are obviously optimal and I don't always understand why.

  • In lots of cases I could propose alternative explanations to the problems people had. For example, economic lamps can release serious amounts of toxic plastic and oil vapors, like PCBs and dioxins. This occurs once the electronics inside gets close to or above 60 °C.

  • Ferrite cores are very efficient to prevent radio pollution to travel along electric cables:


    

  • The pictures below show how the radiations produced by economic lamps can be strongly decreased. But never do that yourself. There is a high risk of electrocution and the thermical insulation provided by the aluminum makes the lamps produce toxic chemical vapors. Much better is to use lamp holders that naturally tend to contain the radiations produced by the economic lamps. I looked at electronic shematics of the inside of such economic lamps. Obviously they were conceived by engineers who understand not much about radio waves and how to contain them.


   

  • Even economic lamps modified like above still produce too much radiations for me. So now I use halogen lamps enclosed in a standard light bulb shape, like shown below. They are quite optimal sources of light, except for the fact they are not much more economic than standard light bulbs. My advice is to use low power such lamps and with a frosted bulb. That way they don't heat too much, which prevents the production of toxic vapors, and they don't produce trembling shadows.


   

  • I started trying out LED lamps. The ones adapted for the 220 or 110 V AC mains contain a minute switching power supply, which produces strong amounts of radio pollution, yet much less than regular economic lamps. I tried one producing "cool white" light and it was awful to light a room or objects. I believe this is because natural "cool white" light contains a lot of violet color. Yet that lamp uses blue LEDs, together with a substance that transforms the blue photons in photons of less energy: cyan, green, yellow, orange, red... It is physically impossible for that lamp to produce violet. The lack of violet was compensated by more blue. The result is just awful... I'm going to try a "warm white" 12 V DC LED lamp, which should produce a much more natural rainbow of colors and produce no pollution provided I use a sane 12 V DC transformer. When holding the 220 V AC LED lamp close to my head I could feel the disturbance.

  • My city seems to be like illuminated by a very strong source of low frequency radio waves. This would be the cause of the majority of the problems I encountered. The next strongest source of problems would be the economic lamps and fluorescent tubes.

  • Quite often, when I hear of somebody complaining and I come with my measuring devices, I conclude that there is indeed a fair chance that the problems of the person are due to the ambiant electrosmog. I propose alternate explanations whenever I can... But, most of the time, the actual source of the radiations was not what the person supposed. In one case, for example, the majority of the radiations in a room arrived through the copper tubes of the central heating system. Those are not electric devices, the tubes just transport water... but they do conduct electricity too and obviously they pass somewhere close to a strong source of radio pollution. I'm convinced that high frequencies, like cell phone radio waves, are a serious problem in some cases, but I never encountered myself a place that was exposed to strong and continuous such radiations and I could never link the problem of a person to them.



Below is the best statistic I could build. I noticed that I could work easily in some places in libraries but not at all in some other places... Before I made any measurement, I gave a note to each place. This yields the horizontal scale. 8 means that I can work quite well a that place, while 3 means that it is hardly possible. Then I made measures of the intensity of the electrosmog. That's the vertical scale. But the absolute values of the measures mean nothing. I was using a device that I build to measure high frequency radio waves, while the actual waves present were low frequency. So the measure only allow for a relative comparison of the places. Nevertheless the result is very clear: the less radiation, the better I work. With just one notable exception, that can maybe be explained by the fact that there were a lot of wires and computers at that place. Maybe this acted as a protection... Or maybe the intense radio waves produced by the computers are of a kind that does not disturb me...




Below are some of the devices I build to measure the ambiant electrosmog and the radiations produced by devices or transported by electric wires. The ones that can differentiate low and high frequencies are not shown, neither the one that just translates the radio waves in a hearable sound. They served me well but they all share the same problem: I can never be sure that the figure displayed really shows the absolute intensity of the oscillating electric field, even very roughly. I'm working on that. The detection diode I'm currently using is the BAT15. The last picture does not show a measuring tool, it is just a little circuit I build as a present for a person. The red LED lights up according to the intensity of the radio waves received by the short antenna. (Most pictures are shown scaled down. You can ask your browser to show the picture independently, to see the details.)


                   

An example to show you that things are not simple. I often hear people telling me that they threw away their Wi-Fi router and made efforts to place ethernet cables all over their house. I've always been complimenting them for their responsibleness. Now, I'm currently at a table in a library with a probe close to my head. I'm in a room where I have difficulties to work but I searched out a place where the radiation level is low. It seems to work fine, I am perfectly able to work. With my laptop switched on, I have a loose measure of 9 mV/m. Then I connected an ethernet cable... and the level rose to 30 mV/m. That cable carries a strong amount of radio waves and uses my laptop as an antenna. It's not the fault of the ethernet system itself. A simple ferrite on the cable would solve the problem. Anyway I immediately choose to use the Wi-Fi rather than that ethernet cable. The Wi-Fi is a nicely conceived system, that only emits radio waves when it needs to. Since I'm just going to send little mails and ask for little web pages once in a while, my exposition to Wi-Fi radiations will simply not be measurable by my probe. It's harmless.

Some more examples to show what I'm trying to deal with. Friends of mine have several children. All have brilliant results at school, except one. When I scanned their home, the desktop of that child was the sole one that was lit by a highly polluting economic lamp. The parents were shocked and they replaced the lamp immediately. That's a sound reaction but actually this has almost no scientific value to prove my point. Another such example is about two different people I know, who became alcoholics lately. It's in their homes that I measured the strongest levels of electrosmog... One of them is a caricature: to start drinking, he sits down at one of the most polluted places in his home. While drinking, he tends to use his cell phone constantly. A few hours later, once he's completely drunk, he goes laying in the place where I measured the highest level... While I was measuring, I found a place with quite a low level of radiations. His reaction: "well indeed that's the only place where I can sit down and read a book a little bit." Again, while this is interesting because it hints at something maybe important, it has no value to pretend that anything has been proven...

My city has one sole very strong source of radio waves pollution: a local big hospital with huge antennas atop the building. In the center of the city, in exposed places, the intensity rises up to 4,000 mV/m. In some rooms I measured more than 1,000 mV/m. This is insane but I was warned that there is few hope to stop this pollution, whatever the impact on the health of the inhabitants or their children.

This is a schematic of the device I'm currently using to measure the electrosmog. It's 10 centimeters antenna is too long to measure correctly cell phone, Wi-Fi and microwave oven radiations. If you need to measure such high frequencies, use say a 2 or 3 centimeters long antenna. What the voltmeter will show has to be multiplied. If you are using a 10 centimeters long antenna, which is 1/10 meter, multiply by 10. If you are using a 2 centimeters long antenna, which is 1/50 meter, multiply by 50. That way you get Volts per meter. This is a very simple and approximative device... The BAT15 diodes are Schottky SMD diodes that can detect up to 12 GHz. The fact they are SMD makes them a little difficult to solder... Also they may break easily if some force is applied on their wires. Any digital multimeter should fit but best (for low frequencies) is to have a multimeter with a high input impedance, like 10 MOhm or more.





I made some shielding that were incorporated to my clothes but this wasn't a very exact science. I got headaches with some shapes... Some rules of thumb emerged to build efficient shielding... A simple solution is to wrap the head and the neck completely in aluminum foil, leaving just holes for the nose and the eyes. I was glad of the result, it allowed me to sleep well for the first time since long. Except for the discomfort of having the head wrapped up in a watertight material...

The current shielding of my tent is much simpler and efficient than my trials of partial shieldings in clothes. The three rules of thumb are that you need full circles, you need surfaces and you need circles in every three of the perpendicular directions. The best to achieve this is a particular brand of aluminum sheet for cooker. One face is aluminum, the other face is a heath resistant plastic. Make sure the aluminum face is tightly wrapped against itself to close the rings made with this material.

Somebody asked me how to measure very low frequency of 50 or 60 Hz. This is necessary to evaluate high tension power lines but also simply in houses. I found a very simple method. It is totally approximate anyway it helps. Simply connect only one probe wire to a multimeter, let it hang, tune the multimeter on Volts AC and multiply the reading by a factor. If the multimeter is a quality one, it probably has an input impedance of 10 MΩ . Then you multiply the reading by 100. In other words : if the multimeter shows 2.3 mV AC, which is the same as 0.0023 Volts AC, this means the actual field has a strength very very approximately in the order of 0.23 volts. If you have a very low-cost or miniaturized voltmeter, it probably has an input impedance of 1 MΩ . Then you multiply the reading by 1,000. The input impedance is mentioned in the user guide of the device.





This text can be considered to be continued on this page:

http://www.4p8.com/eric.brasseur/electrosmog_fm.html



Eric Brasseur  -  October 9 2008  till  June 16 2009        Homepage | eric.brasseur@gmail.com ]