We increasingly meet on the street "strange" people, talking as if to themselves. Attentive sight will notice at them near an ear or in an auricle a certain similarity of a hearing aid. These are owners of bluetooth headphones, many of whom carelessly chat, listen to music, without even thinking about the possible bluetooth-radiation.
What is bluetooth, how strong is its radiation and whether the bluetooth headset is harmful to human health? Let's understand.
What is bluetooth
Bluetooth is a wireless technology that allows you to transfer data - speech, music, images both between similar devices, and between different ones. That is, bluetooth technology allows you to maintain communication between cell phones, between a mobile device and a computer, between digital cameras and so on.
Headsets are gadgets for using all the functions of some other device. The most common bluetooth headset sets are:
- two earphones for listening to stereo music;
- a mono earpiece for communication by phone;
- Earpiece in ear.
Any of these sets is equipped with a built-in microphone.
If a sound signal is sent to the usual headphones by wires directly from its source, then in the wireless communication system, the situation is different. Electric vibrations of the audio frequency are sent to the radio transmitter of the sound source, converted into radio waves, which are received by the radio receiver of the earphone. In this case, the radiation occurs at frequencies in the range from 2.4 to 2.8 GHz.
Harmful bluetooth and what kind of radiation from the bluetooth headset
Are these bluetooth headsets harmful? On the undeniable convenience of headphones is not worth arguing. Their owners in any situation can continue to communicate with the invisible interlocutor, leaving their hands on the steering wheel or continuing to play sports. Without interrupting the conversation, you can move away from your cellular phone to a distance of 10 meters or, while walking, for hours listening to your favorite music.
The latest, 4th version of bluetooth allows you to transfer information wirelessly from one device to another for a distance of 100 meters! Indeed, it is convenient. But are bluetooth headphones harmful? Doctors believe that their constant wearing can cause headaches, memory problems and brain work, they can provoke increased irritability and nervousness. Since too loud or very quiet sound and extraneous noise cause overstrain of the nervous system. There are cases when people who constantly use this gadget have tumors in the ears.
However, the accumulated statistics are not enough to confirm the harm of Bluetooth. The radio waves used in this standard refer to the ISM range, which is characterized by low power consumption and amplitude, as well as a small data transfer rate. Such attenuated characteristics of radiation from bluetooth headsets have little effect on a person.
Let's compare the power of bluetooth and mobile phones. The cell phone has a power of 2 W, and the bluetooth channel has only 0.0025 W, that is, 800 times less. Therefore, the signals of mobile phones can cover distances of tens of kilometers, and the radiation of bluetooth short-range is only tens of meters.
The power of radiation bluetooth headsets is completely miserable and can not harm the health of its owner. If the rules of mobile phone operation are not observed, its radiation is harmful. And since the radiation of the headset is incomparably less, it harms this harm.
But a drop grinds the stone. Lifestyle with the constant use of headphones, can have distant, negative consequences. The damage to the headphones is not immediately noticeable. A person has time to get used to the gradual reduction of hearing and does not notice it.
Is bluetooth harmful in the ear? The auricle, in addition to its direct function, surprisingly resembles a human embryo. This statement of French scientists, found its confirmation in the effectiveness of acupuncture active points of the ears. If a miniature gadget with bluetooth function is inserted inside the ear, it is the source of a weak electromagnetic field. And the radiation takes place in any mode of operation of the headphone.
The constant influence of weak, but high-frequency electromagnetic radiation on the active points of the auricle, obviously will not go to man's benefit. In addition, this apotheosis of miniaturization creates additional pressure on the tympanic membrane, and the absence of a natural air layer causes a high level of sound. Given that the musical preferences of young people are based on listening to loud music, you can imagine what unnatural loads are experienced by the eardrums. In the end, it causes organic changes in the organs of hearing.
The damage to the bluetooth headset, as a source of radiation, is extremely insignificant due to the low power of the incoming signal. However, on the forums there are reports that the frequency used in this standard can adversely affect the work of WI-FI, interrupting communication with the Internet.
Each new technology, which enters into any sphere of human life, goes through a period of approbation among consumers. Bluetooth technology has withstood this period with honor. Its main advantage is that bluetooth headsets are not connected to the phone by constantly confusing wires. This circumstance is very important for long road trips. At the same time, the entire burden of its safe application lies with the user.
What is meant by the word "reasonable":
- Do not use this wireless connection for long conversations;
- To dispose of the cellular device as far as possible from itself - not in the pocket, but in the next seat.
Bluetooth standard is, in fact, a personal wireless network for information exchange. Bluetooth is not only not harmful to humans, but when used wisely, it turns out to be a very useful gadget.