Harm to mobile phones on the body (Habitat: Invisible enemy.)

Radiation emitted by mobile phones

Given the principle of mobile phones, they must emit a small amount of electromagnetic radiation. Mobile phones transmit signals over radio waves, which consist of radiofrequency (RF) energy, which is a kind of electromagnetic radiation.

Every time more and more people raise the question of whether mobile phones emit radiation that can be detrimental to human health. The main stone in the mobile phone flies due to the fact that during a conversation it must be kept near the ear, and accordingly close to the head, i.e. There is a direct effect on the human brain and radiation affects the tissues of the head. It is impossible to answer this question unequivocally, since the evidence supports both sides of this argument.

In this article, we will try to answer this controversial and worrying issue of millions of people, we will talk about how mobile phones radiate radiation and how to measure their radiation level.

Source of radiation

During a conversation on a mobile phone, the transmitter encodes the voice of a person's voice into a continuous wave of sine. A sine wave or a harmonious wave is all just a kind of continuously variable wave that emanates from the antenna and evenly passes through the air. Therefore, the sine wave is measured in units of frequency, i.e. How many times the wave oscillates up and down in a second. As soon as the encoded sound hits the sine wave, the transmitter sends a signal to the antenna, which in turn transmits it further.

In all mobile devices, low-power transmitters are built-in. In machine mobile phones, the transmitter power is 3 watts. In ordinary mobile phones - only 0.75 - 1 watts. Typically, mobile device manufacturers can install this transmitter anywhere, but in most cases it is placed near the antenna of the phone. All radio waves that send an encoded signal emit a small amount of electromagnetic radiation, which is also amplified by the antenna. The main function of the antenna in any radio transmitter is to transmit radio waves into space; As for mobile phones, these waves are picked up by the receiver of the mobile network tower.

Electromagnetic radiation is formed due to waves of electric and magnetic energy moving at the speed of light (according to the Federal Communications Commission). All electromagnetic energy falls on the electromagnetic spectrum, ranging from an extremely low frequency of radiation to X-rays and gamma rays.

Talking on a mobile phone, most users lean it directly to the head, resulting in a little radiation can penetrate into the human brain tissue. Further we will consider, why scientists consider mobile phones harmful for our health, and what harm they can cause to the person.

Potential health risks

In the late 1970s, many people raised the issue of the effect of magnetic fields produced by the power lines that caused leukemia in children. However, conducted epidemiological studies have not revealed any connection between the development of cancer and power lines. But nowadays the question of human health has become again, as people use mobile phones every day, which emit, even a small, but still radiation. Studies do not allow a final and exhaustive conclusion, since they contradict each other.

As you know, all mobile phones emit a certain amount of electromagnetic radiation. Given the immediate proximity of the phone to the head, there is a risk that radiation can harm the tissues of the human brain. Therefore, scientists and politicians are debating about what level of radiation is dangerous, and whether mobile phones have a long-term effect of radiation.

There are two types of electromagnetic radiation

Ionizing radiation - this type of radiation contains enough electromagnetic energy to separate the atoms and molecules from the tissues and change the chemical reactions in the body. The two forms of atomic radiation are gamma rays and X-rays. Both of these forms are very dangerous for a person, you can protect yourself from these rays only if you wear a lead vest.

Non-ionizing radiation. Basically, non-ionizing radiation does not pose a great danger to humans. As a result of this radiation, a certain thermal effect is observed, but this is usually not enough to damage the human tissue. Non-ionizing radiation is radio frequency energy, visible light and microwave radiation. According to the data of the Department of Human Health and Environmental Protection "the conducted studies did not reveal the harmful effects of mobile phones on the state of human health". However, this does not exclude the possibility of causing little harm. "High radio frequency radiation can still damage human tissue," the Federal Communications Commission said. Radiofrequency radiation can warm up the human tissue in the same way as microwave ovens heat food. Damage to tissues can occur under the influence of high-frequency radiation, because the body is not able to quickly dissipate excessive heat. The eyes are especially vulnerable, since there is a very low blood flow in this area.

Every day, there are more and more new mobile phones and new users, so scientists and lawyers are concerned about the possible risk of deteriorating people's health and are trying to find ways to prevent it.

In addition to the radiated radiation of telephones, people are also concerned that this radiation can have a lasting effect on a person and constantly accumulate in the body. And even if mobile phones do not exert much influence on the tissues during the conversation, scientists still believe that the radiation emitted by mobile phones can accumulate in the body for a long period of time and then exert its influence. Especially this issue has become acute in our time, as more people start using mobile phones. For example, in 1994, 16 million people used mobile phones in the US, in June 2001 this number rose to 118 million.

Radiation of mobile phones can cause disease

• Cancer
• Tumors of the brain
• Alzheimer's disease
• Parkinson's disease
• Fatigue
• Headache

The studies carried out only confuse this issue. As in many controversial issues, various studies yield different results. Some experiments show that mobile phones are the first sources of cancer and other diseases, while other studies show that mobile phone users do not risk their health more than the entire population. However, as yet no research has confirmed that it is the mobile phones that lead to all of the above listed diseases.

If you are very worried that a mobile phone can harm your body, we advise you to adhere to the following rules:

• Try to talk on the headset, so you free your hands and avoid the impact of mobile phone radiation on the brain tissue;
• Use phones that have antennas removed as far as possible from the ear;
• Try to call as little as possible indoors;
• Try to use the phone only in the fresh air;
• Do not allow children to play with the phone.

"At a very high level, radiofrequency energy can quickly heat up biological tissue and cause harm, for example, cause a burn" - states the GBKU, the Main Budget Control Office (USA). However, this department assures that mobile phones operate at a very low level, and therefore are not able to exert such an impact. The amount of radiation emitted by these devices is minimal and therefore practically not felt, besides the government of many countries set the standards for the permissible radiation radiation standards in mobile phones.

Checking devices for radiation radiation

-Any model of a mobile phone before it hits the market must undergo special testing. As a rule, testing is carried out by the manufacturer, but one can not always rely on the honesty of a particular mobile phone manufacturer.

The irradiation limit is calculated from the calculation of the maximum thermal effect of radio-frequency energy. In 1996, the Federal Communications Commission (USA) set a general radiation limit for many mobile phones. Later, the Federal Communications Commission published the basic principles of testing, with the help of which manufacturers could determine the exposure limit, i.e. Irradiation.

-The radiation level is determined on the basis of a specific absorption rate (SAR), due to which it is possible to measure the amount of radio-frequency energy absorbed by the human body. In order to obtain a license from the Federal Communications Commission, the maximum level of SAR phone should not exceed 1.6 watts per kilogram (W / kg). In 2000 in some countries of the world the government obliged manufacturers of mobile phones to stick on phones labels with the level of radiation radiation.

There are a variety of methods for measuring radiation, but as a rule, in every country in the world there is one single standard. For example, in May 2001 the GBKU published a detailed instruction on how to measure SAR levels.

Radiation should be measured as follows:

• A mock-up in the form of a human head and trunk is filled with a liquid mixture specially designed to simulate the electrical properties of human tissue.
• The test mobile phone is installed from the outside of the layout.
• A sample attached to a computer-controlled mechanical hose is placed in this mixture in various positions.
• Include a telephone so that it starts transmitting signals to full power, while the sample is moved in this mixture.

During the test, pull out the phone antenna to check the fluctuation of radiation in different configurations. The Federal Communications Commission manufacturer must provide the highest level of SAR received during the test.

Therefore, if you want to know the specific rate of absorption of your phone, you can visit the website of the Federal Communications Commission. All mobile phones listed in the Federal Communications Commission's database have their own identification code. Enter this code in a special input line, and you will get all the information about your phone.

Until now, the question remains unanswered as to whether mobile phones bring any harm to the human body. Studies consistently produce different results. Therefore, it is not yet known what risk millions of mobile phone users are exposed to and how this may affect them in the future.

About Chinese copies of mobile phones

Today, Chinese copies of mobile phones are so widespread that you can certainly not knowing if you will buy it. But how to say the demand generates a proposal - at every corner offer to buy a Chinese counterfeit, it concerns both the Internet and real. The market is just teeming with fake smartphones, communicators, etc. And their quality is very diverse.

Do not scare the Chinese or high technology, or the original brand design - to forge learned almost everything. But still you can certainly distinguish it. Of course, forge brands: Nokia, Samsung, Sony Ericsson, iPhone and others.

Chinese counterfeits are extremely low cost, and sometimes - still quite similar to the original. In this article, we consider the main features by which you can distinguish the original from the Chinese counterfeit.

Have you ever held the original Nokia device in your hands? Its weight is at least impressive. If you buy a Nokia smartphone, and it seems to you unusually easy, then most likely it is a fake. It is still very easy to distinguish the original phone from the Chinese counterfeit by the quality of plastic. Firstly, the original case is pleasant to the touch. Secondly, high-quality plastic has high strength. Therefore, when pressed, there should be no cod.

The original mobile phone has all the details of the case clearly adjusted to each other, nothing is not going anywhere. When you press the keys of these devices, a clear and simultaneously a dull sound. All stickers in the sale must be both qualitative and qualitatively pasted. As for the clamshells, there should be no obstacle and creaking when opening and closing the device.

You can also distinguish the "left" mobile phone from the battery. On there is a glossy sticker. Thus, when it is illuminated with ultraviolet, the yellow bands are clearly visible. Sometimes it's enough to turn on the phone camera to understand that it's not real. The originals now do not produce cameras with a resolution of 0.3-megapixel camera, only be careful - on the case and in the instruction can be written and 5.0-megapixels.

If the communicator with a touch screen, then, unlike the original, many functions that can be performed (for example, turning and enlarging the photo using the finger method) will be inaccessible. Another feature of Chinese counterfeits can be allocated support for two SIM cards, on the case of devices often the name of the company with errors - Wotorola, iFone, Nokla, Nckia, Veptu, Suny Ericssun and others.

As for the accompanying documentation and the internal stuffing of the phone, it's still more interesting here. From the documentation I especially want to highlight the so-called "User's Guide", not only that in broken Russian, so perhaps one more (in terms of content) for all Chinese counterfeits. Also pay attention to internal Russification, because there are often frequent mistakes.

Almost all the untrue Chinese phones operate on the platform MTK (MediaTek Inc. Taiwan), which is used in mobile phones Fly. So you will have at your disposal an internal memory right up to one megabyte . And instead of supporting modern applications and programs - the lack of or very weak support for Java and many more glitches in addition. And even an incredible joy in the loss of this "mobile technological excellence" .

If you do not want to try on yourself all the charms of Chinese fakes, before buying a phone at least look at this model (if it exists at all) on the official website of the manufacturer.

About the harm of radiation from mobile devices

Sometimes it seems that today all products are produced in China. Of course, most middle-income people prefer precisely Chinese goods because of their cheapness, but they tend not to pay attention to the fact that they buy goods dangerous to health.

This year, dozens of American cats and dogs were poisoned by Chinese food. In Panama, at least 94 people were killed curing Chinese cough syrup. Chinese car tires are torn to shreds on American roads. And what a charm - Chinese children's toys, made of toxic materials, deadly to health. And this list can be continued indefinitely.

The Chinese government does not keep up with the development of Chinese production, it does not have clear tools for tracking the quality of manufactured goods. At the same time, European countries and the United States of America do not have strict laws for checking imported goods. In fact, it turns out that no one controls the quality of imported goods. Interestingly, Chinese phones are as life-threatening as Chinese toothpaste?

At first glance, a toxic toothpaste can do more harm to a person than a mobile phone, we do not take it into our mouths. The production of an ordinary mobile phone uses heavy toxic metals, such as lead and beryllium, as well as hazardous substances, such as cadmium and bromide. The technology of safe use of these substances in the production of mobile phones is too complex and expensive.

Large phone manufacturers, of course, spend money on the introduction of safe technologies. In addition, the government and organizations protecting consumers' rights monitor product safety.

Unfortunately, China does not have such strict control. Recently, the media reported that the inspection of mobile phone manufacturers in China showed that 80% of chargers and 40% of batteries do not meet the standard. For the past two years, at least six mobile phones have exploded in China. Last month, one person even died from a phone explosion. It is said that this was Motorola's phone, but most likely it was one of those phones that are successfully forged in China, or it had a Chinese battery.

In addition, there is a problem of increased radiation background of Chinese products, including telephones. Sometimes checks reveal a serious excess of the norm.

In the United States, as in European countries, buyers are offered a huge number of different devices from Europe, Korea, Japan and other countries, and of course most of these devices use Chinese parts. But self-respecting manufacturers carefully check all the components. Therefore, the quality of goods of large companies can be calm, even if they cooperate with Chinese companies.

But now the Chinese mobile phone manufacturers are actively trying to break into the American and European markets with their products and some even succeeded, for example, Alcatel Mobile Phone and Haier Group.

As for counterfeit phones, they are even more risky. It is not known what the phone will cost to the buyer, purchased on the occasion for $ 100. Maybe it will explode in front of him, cause cancer or damage the brain. This can only be learned from newspaper news.

What can I advise potential buyers of Chinese phones? Only one thing is to wait with the purchase until the time when at least someone will check their quality and safety