Technological progress has not only positive aspects. The active use of equipment that consumes electricity has caused pollution, which is called electromagnetic noise. The body is adapted to natural sources, for example, atmospheric phenomena, solar radiation, but artificial sources pose a threat to human health.
Sources of electromagnetic field
An electromagnetic field is a wave that occurs when a disturbance of an electric and magnetic field occurs. The smallest portion of electromagnetic radiation is a quantum; it has inherent frequency-wave properties.
The main sources of the electromagnetic field surrounding each person:
- electrical wiring: the amount of radiation depends on the load on the line;
- electric ovens and microwave ovens equipped with a high-frequency heating unit;
- any electrical device equipped with conductors;
- economical lighting devices (equipped with power supplies operating at high frequency);
- devices that display information, such as game consoles, screens, monitors and laptops;
- electric autonomous heating systems;
- electric motors;
- electronic measuring instruments, etc.
The harm of electromagnetic radiation has been proven many times. This is the scourge of modernity, but people are not ready to give up benefits.
Street light sources
There are also a lot of street sources of electromagnetic waves that pose a threat to human lives:
- LED advertising screens and street lighting;
- transformer substations;
- public transport on electric traction (causes damage to the body only during its use);
- underground and overhead power lines;
- trolleybus lines;
- transmitting antennas, e.g. radio towers, television broadcasts, etc.
Exposure to electromagnetic radiation is inevitable, so you need to know how to protect yourself from harmful effects. The first thing to do is to minimize the impact on the body.
EMC protection
It is important to monitor the strength of radiation precisely at home, since in public places and at work this is monitored by special services. At home, people can focus on the norms of SES and their own common sense when operating electrical appliances.
There are three methods of protection, in order to choose a more suitable one, you need to familiarize yourself with the features of each.
Time protection
The body is able to safely tolerate a limited dose of radiation. The principle of the time protection method is as follows:
- If the electrical device is not currently in operation, it must be turned off.
- If the device cannot be turned off, it is necessary to reduce the time spent in the field of exposure to radiation.
You cannot stay in large shopping centers for a long time, since such structures are oversaturated with sources of electromagnetic waves.
Distance and direction protection
In implementation, this method of protection against an electromagnetic pulse is both simple and complex. Its essence is to be as far away as possible from the source of harmful flow.
Doctors strongly recommend that you do not purchase housing near power lines, transformer substations and industrial facilities.If there is such an opportunity, you need to control the number of mobile antennas installed on the roof of the house. It is forbidden to stand near the microwave oven during its operation.
It is not recommended to stand near a person who is talking on the phone. Radiation propagates in a radius of at least 1 meter.
Shielding
Shielding of electromagnetic fields is based on two physical laws - absorption and reflection of electromagnetic waves during the transition from one medium to another. There is suppression of radiation passing through the screen. As a rule, screen material is a good conductor. In the domestic market, metal raw materials are in demand - steel, silver and copper fibers, as well as a forming mesh.
It is better to approach protection comprehensively. When making repairs in a house or apartment, it is better to give preference to special screening paints for floors, walls and ceilings. They are made of high quality materials, do not emit toxic substances and are safe for households.
Using methods in practice
The most effective method of protection is the installation of a conductive shield, grounded in accordance with the rules of the electrical installation.
This method is applied in practice in the following way:
- During repairs in the room, it is recommended to lay metal fittings under the plaster. This material will prevent the absorption of waves from the outside. Such a grid will be effective only in the presence of grounding.
- The acquisition of special metallized curtains with decorative threads. The product will also be effective in the presence of grounding.
- The aluminum foil glued behind the batteries will reflect heat and protect households from electromagnetic waves.
- Entrance doors made of steel. It is important that they are earthed as part of the equalization of potentials, otherwise they can be electric shock.
Shielding methods based on shielding have a significant drawback - the quality of cellular communications is deteriorating at home.
To learn about the impact of household appliances and electrical appliances at home, you need to learn as much information as possible about the devices used. If there is a suspicion that the permissible norms are violated, SES specialists should be invited to conduct all necessary measurements.
