There are different sources of infrared radiation. Currently, they are found in household appliances, automation systems, security systems, and are also used in drying industrial products. Infrared light sources, when properly used, do not affect the human body, so the products are very popular.
Discovery history
Eminent minds have been studying the nature and action of light for many centuries.
Infrared light was discovered in the early 19th century with the help of research by astronomer W. Herschel. Its essence was to study the heating abilities of various solar areas. The scientist brought a thermometer to them and watched the increase in temperature. This process was observed when the device touched the red border. V. Herschel concluded that there is some kind of radiation that cannot be seen visually, but can be determined with a thermometer.
Infrared Rays Application
They are widespread inhuman life and have found their application in various fields:
- Military. Modern missiles and warheads, capable of self-homing, are equipped with night vision devices, which are the result of the use of infrared radiation.
- Thermography. Infrared radiation is used to study overheated or supercooled areas. Infrared images are also used in astronomy to detect celestial bodies.
- Gen. Infrared heaters, the operation of which is aimed at heating interior items and walls, have gained great popularity. Then they give off heat to the space.
- Remote control. All existing remotes for TV, stoves, air conditioners, etc. equipped with infrared rays.
- In medicine, infrared rays are used to treat and prevent various diseases.
Let's see where these elements apply.
Infrared gas burners
Infrared burner is used to heat various rooms.
At first it was used for greenhouses, garages (that is, non-residential premises). However, modern technology has made it possible to use it even in apartments. In the people, such a burner is called a sun device, since when it is turned on, the working surface of the equipment resembles sunlight. Over time, such devices replaced oil heaters and convectors.
Highlights
The infrared burner differs from other appliances in the way it heats up. Heat transferIt is carried out due to the emission of infrared rays, which are not visible to humans. This feature allows heat to penetrate not only into the air, but also to interior items, which further also increase the temperature in the room. The infrared emitter does not dry the air, because the rays are primarily aimed at interior items and walls. In the future, the transfer of heat will be carried out from walls or objects directly to the space of the room, and the process takes place in a few minutes.
Positives
The main advantage of such devices is quick and easy space heating. For example, it takes 20 minutes to heat a cold room to +24ºC. There is no air movement during the process, which contributes to the formation of dust and large contaminants. Therefore, the infrared emitter is installed indoors by those people who have allergies.
In addition, infrared rays, falling on the surface with dust, do not cause it to burn, and, as a result, there is no smell of burning dust. The quality of heating and the durability of the device depends on the heating element. These devices use the ceramic type.
Cost
The price of such devices is quite low and accessible to all segments of the population. For example, a gas burner costs from 800 rubles. A whole stove can be purchased for 4,000 rubles.
Sauna
What is an infrared cabin? This is a special room, which is built from natural varieties of wood (for example, cedar). into itinfrared emitters are installed that act on the tree.
During heating, phytoncides are released - useful components that prevent the development or appearance of fungi and bacteria.
Such an infrared cabin is popularly called a sauna. Inside the room, the air temperature reaches 45ºС, so it is quite comfortable to be in it. This temperature allows you to warm the human body evenly and deeply. Therefore, heat does not affect the cardiovascular system. During the procedure, accumulated toxins and slags are removed, the metabolism in the body is accelerated (due to the rapid movement of blood), and the tissues are also enriched with oxygen. However, perspiration is not the main property of an infrared sauna. It is aimed at improving well-being.
The effect of infrared sauna on a person
Such rooms have a beneficial effect on the human body. During the procedure, all muscles, tissues and bones are warmed up. The acceleration of blood circulation affects the metabolism, which helps to saturate the muscles and tissues with oxygen. In addition, the infrared cabin is visited in order to prevent various diseases. Most people leave only positive reviews.
Negative effects of infrared radiation
Sources of infrared radiation can cause not only a positive effect on the body, but also harm it.
Prolonged exposure to the rays dilates the capillaries, resulting in redness orburns. Sources of infrared radiation cause particular harm to the organs of vision - this is the formation of cataracts. In some cases, a person has seizures.
The human body is affected by short rays, causing heat stroke. With an increase in the temperature of the brain by several degrees, a worsening of the condition is observed: darkening in the eyes, dizziness, nausea. A further increase in temperature can lead to the formation of meningitis.
Deterioration or improvement occurs due to the intensity of the electromagnetic field. It is characterized by temperature and distance to the source of radiation of thermal energy.
Long waves of infrared radiation play a special role in various life processes. Short ones affect the human body more.
How to prevent the harmful effects of IR rays?
As mentioned earlier, a short thermal radiation has a negative effect on the human body. Consider examples where IR radiation is dangerous.
Today, infrared heaters emitting temperatures above 100ºС can harm he alth. Among them are the following:
- Industrial equipment that emits radiant energy. To prevent negative impacts, protective clothing and heat protection elements should be used, as well as preventive measures should be taken among working personnel.
- Infrared device. The most famous heater is the stove. However, it has long been out of use. Increasingly in apartments,country houses and dachas began to use electric infrared heaters. Its design includes a heating element (in the form of a spiral), which is protected by a special heat-insulating material. Such exposure to rays does not harm the human body. The air in the heated zone is not dried. You can heat up the room in 30 minutes. First, infrared radiation heats objects, and then they heat the whole apartment.
Infrared radiation is widely used in various fields, from industrial to medicine.
However, they should be handled with care, as the rays can have a negative effect on a person. It all depends on the wavelength and the distance to the heater.
So, we found out what sources of infrared radiation exist.
