Influence of microwave radiation on a human
Among the huge variety of electromagnetic waves that exist in nature, a very modest place is occupied by microwave or superhigh-frequency (microwave) radiation. Find this frequency range can be between radio waves and the infrared part of the spectrum. The length of it is not particularly large. This wave length from 30 cm to 1 mm.
Let's talk about its origin, properties and role in the sphere of human habitation, about how this "silent invisible" affects the human body.
Sources of microwave radiation
There are natural sources of microwave radiation - the Sun and other cosmic objects. Against the background of their radiation, the formation and development of human civilization took place.
But in our, saturated with all sorts of technical achievements of the century, the natural background was supplemented by man-made sources:
- radar and radio navigation systems;
- satellite television systems;
- cell phones and microwaves.
How Microwave Radiation Affects Human Health
The results of the study of the effect of microwave radiation on humans made it possible to establish that microwave beams do not have an ionizing effect. Ionized molecules are defective particles of matter, leading to mutations of chromosomes. As a result, living cells can acquire new (defective) signs. This conclusion does not mean that microwave radiation does not harm a person.
The study of the influence of microwave radiation on man, made it possible to establish the following picture - when they hit the irradiated surface, a partial absorption of incoming energy by human tissues takes place. As a result, high-frequency currents that heat the body are excited in them.
As a reaction of the mechanism of thermoregulation, there is an increase in blood circulation. If the irradiation was local, rapid heat removal from the heated areas is possible. With general irradiation, there is no such possibility, so it is more dangerous.
Since the circulation of blood serves as a cooling factor, in the organs depleted of blood vessels, the thermal effect is most pronounced. First of all - in the lens of the eye, causing its turbidity and destruction. Unfortunately, these changes are irreversible.
The most significant absorptive capacity is characterized by tissues with a high content of liquid component: blood, lymph, gastric mucosa, intestine, lens of the eye.
As a result, the following can be observed:
- changes in blood and thyroid gland;
- decrease in the efficiency of adaptation and exchange processes;
- changes in the mental sphere that can lead to depressive states, and in people with unstable psyche - to provoke a propensity for suicide.
Microwave radiation has a cumulative effect. If, at first, its effect passes asymptomatically, then pathological conditions gradually begin to form. Initially, they are manifested in the increase in headaches, rapid fatigue, sleep disorders, increased blood pressure, heart pain.
With prolonged and regular exposure, microwave radiation leads to the deep changes listed above. That is, it can be argued that microwave radiation has a negative impact on human health. And noted the age sensitivity to microwaves - young organisms were more susceptible to the influence of microwave EMF (electromagnetic field).
Means of protection from microwave radiation
The nature of the effect of microwave radiation on a person depends on the following factors:
- distance from the radiation source and its intensity;
- duration of irradiation;
- type of radiation (continuous or pulsed);
- external conditions;
- state of the body.
For the quantitative assessment of the hazard, the concept of radiation density and the permissible radiation dose is introduced. In our country, this standard is taken with a tenfold "margin of safety" and is equal to 10 microwatts per centimeter (10 μW / cm). This means that the power flux of microwave energy in the workplace of a person should not exceed 10 μW for every centimeter of the surface.
How to be? The conclusion is drawn by itself that it is necessary to avoid exposure to microwave rays in every possible way. To reduce the effect of microwave radiation in the sphere of everyday life is quite simple: it is necessary to limit the time of contact with its domestic sources.
A completely different protection mechanism should be in people whose professional activity is related to the influence of microwave radio waves. Means of protection from microwave radiation are divided into general and individual.
The flux of radiated energy decreases inversely proportional to the increase in the square of the distance between the radiator and the irradiated surface. Therefore, the most important collective protective measure is to increase the distance to the radiation source.
Other effective measures to protect against microwave radiation are the following:
- reduction of radiation in the source;
- change its direction;
- reduction of exposure time;
- remote control of radiating devices;
- application of protective shielding.
Most of them are based on the basic properties of microwave radiation - reflection and absorption of the substance of the irradiated surface. Therefore, the protective screens are divided into reflective and absorbing.
Reflective screens are made of sheet metal, metal mesh and metallized fabric. The arsenal of protective screens is quite diverse. These are sheet screens of a homogeneous metal and multi-layered packages, which include layers of insulating and absorbing materials (shungite, carbonaceous compound), etc.
The final link in this chain is the means of individual protection from microwave radiation. They include overalls made of metallized fabric (dressing gowns and aprons, gloves, capes with hoods and built-in glasses). The glasses are covered with a very thin layer of metal reflecting the radiation. Their wearing is mandatory when irradiated at 1 μW / cm.
Wearing protective clothing reduces the exposure level by 100-1000 times.
The benefits of microwave radiation
All the previous information with a negative focus, aims to prevent our reader from coming from microwave radiation, danger. However, among the specific actions of microwaves, the term stimulation occurs, that is, the improvement under their influence of the general state of the organism or the sensitivity of its organs. That is, the effect of microwave radiation on a person can be useful. The therapeutic property of microwave radiation is based on its biological effect in physiotherapy.
Radiations emanating from a specialized medical generator penetrate the human body to a specified depth, causing tissue heating and a whole system of beneficial reactions. The sessions of microwave procedures have analgesic and antipruritic effect.
They are successfully used to treat the frontitis and sinusitis, trigeminal neuralgia.
To influence the endocrine organs, respiratory organs, kidneys, and the treatment of gynecological diseases, microwave radiation with a greater penetrating power is used.
The study of the effect of microwave radiation on the human body began several decades ago. Accumulated knowledge is enough to be sure of the harmlessness of the natural background of these radiations for a person.
A variety of generators of these frequencies create an additional dose of exposure. However, their share is very small, but, the protection used is reliable enough. Therefore, the phobia of their immense harm is no more than a myth, if all the conditions of operation and protection from industrial and domestic sources of microwave radiators are observed.