Monday, 28 March 2011
Using a mobile phone
I think that using a mobile phone should be limited to only short "must" or "emergency" calls. Using a mobile phone exposes you, people around you and people who are in the vicinity of the mobile phone masts to electromagnetic radiation (both RF and ELF), so I think that limiting the time you use the mobile phone is a smart thing to do. However sometimes you have to use the mobile phone, to call the police, to ask for help, to say you are late, to ask for directions. I suggest that you should try to reduce your exposure to electromagnetic radiation as much as possible, while using the mobile phone. Even if you use the mobile phone once in a while, I still suggest you to try and limit your exposure to the electromagnetic radiation from your mobile phone.
When talking on the mobile phone, the mobile phone emits changing levels of electromagnetic radiation (High frequency RF single). In addition the cell phone emits also low frequencies EMR created in his electronic parts, boards and as created in the processes of the RF signle transmission . The levels are dropping as you move away from the device. The most sensitive part of the body, to electromagnetic radiation, is considered by many to be the head. I think that other parts of the body might also be very sensitive to electromagnetic radiation. The first thing I feel when I am exposed to electromagnetic radiation is a headache but this does not say that only the head is affected. Having said that I would suggest not to put the mobile phone next to your head while talking but I would also suggest not to put it in your pockets or in your belt clip, try to stay as far as possible from it at all times especially when making a call and during conversations.
So what can you do if you do want or need to use the mobile phone but still want to limit your exposure to electromagnetic radiation? I think the best thing to do is to use AIR TUBE earphone or the speaker mode and hold your mobile phone as far away as possible from your head and body. If you use the speaker phone or AIR tube and the mobile phone is still next to your body, head, on your belt clip or in your pocket you still get exposed to electromagnetic radiation. You need to remember to keep distance from the mobile phone as much as possible while it is emitting electromagnetic radiation.
Most of today mobile phones have a speaker option, and together with holding the mobile phone far from your head and body, using it will limit your exposure to electromagnetic radiation emitted by your mobile phone (both high frequencies and low frequencies). But sometime you can't use the speaker phone option, like when there is a lot of ambient noise, when you don't want other people to be disturbed by the conversation and some other reasons.
Using regular earphone allows you to hear and to be heard better than when using a speaker phone while reducing your exposure to electromagnetic radiation since the mobile phone is no longer next to your head (the far it is the less electromagnetic radiation is getting to you). But some of the high frequency electromagnetic radiation makes it's way on the earphone wire to your head.
Air Tube earphone
Using an Air Tube earphone allows you to hear and to be heard better than when using a speaker phone while reducing your exposure to electromagnetic radiation. In a regular wired earphone some of the high frequency electromagnetic radiation makes it way on to the earphone wire and to your head. When using an Air Tube wired earphone most of this radiation does not reach the ear or head. In an Air Tube wired earphones, the wire goes up as far as 20 cm from the head. It has 2 speakers and a microphone and the sound from the speakers is making its way to the ear via one or two air tubes which can pass air waves and sound but do not carry electromagnetic radiation. In an Air Tube earphone some of the electromagnetic radiation makes its way onto the wire but not to the head since there are no metal wires coming up to the head. You still have to keep the mobile phone as far as possible from your body, and the long wire of the Air tube earphone allows you to do so.
When I must use the mobile phone I usually start to feel bad after several seconds (about 20 seconds) of using it against my ear. If I use a regular wired earphone the headache appears after a minute. Using the mobile phone speaker allows me to use the mobile phone for up to 2 minutes, depending on how far I can place the mobile phone (and still hear and be heard). When I use my wired air tube earphone I can talk for about 3-4 minutes until the first sign of a headache appears. In addition using the wired air tube earphones allows me to place the mobile phone far away from me and still hear and be heard.
First I did not believe that this wired air tube earphone is really working, that it is worth the money and that it is better than the ordinary wired earphone. But when I did some tests and measurements I noticed that most of the electromagnetic radiation that was making its way up the wire was "stopped" at the speakers and did not make its way to the user ear. Later on I tested it on myself several different occasions when I had to use the mobile phone, and was amazed as I did not feel the expected headache, even after a 3 minute call. Usually when I use a regular wired earphone I can use the mobile phone for only 1 minute before I feel the pain. If I would (and when I used to) use the mobile phone and I put it next to my head the expected headache appeared after only 20 seconds.
Why not Bluetooth?
In the market today you can find many types of bluetooth and wireless earphone, some types even have air tubes. Using a bluetooth device exposes you to some additional electromagnetic radiation from the bluetooth device and from the mobile phone, in addition to the one emitted from your mobile phone when making a call. In addition people usually tend to keep their bluetooth device working all the time. Bluetooth devices and mobile phone with their bluetooth connection enabled emits electromagnetic radiation all the time. I don't recommend using a bluetooth devices or earphones even when it comes with an Air Tube.