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Today, everyone cares about the main thing: how to protect yourself and your loved ones from COVID19? The first thing the authorities advise (and in most cases require) is: stay at home.

The advice is correct: the fewer contacts with the outside world, the less likely one gets infected. However, staying at home is not so simple! In a normal situation, there are no problems with it. But we are not at home 24/7 — some people work, some people study, children, go to school, and older people walk, meet friends, go to shopping centers. We go to theaters and restaurants, spend time in parks and cinemas.

And suddenly the family find themselves together, behind the tightly closed doors of their house or apartment. It’s not very clear: how long will such a voluntary “house arrest” last? It is OK if it is for a couple of weeks. And if it comes to the months?

Psychologists say that such constant forced contact is by itself a reason for stress and nervousness. And doctors advise compliance of preventative measures at constant close contacts.

In such a situation, it is very important to keep your home clean and tidy, to carry out all the necessary measures so that unwanted microorganisms and viruses do not damage the healthy atmosphere of our stay. One of the most effective ways to deal with a domestic infection is ultraviolet light.

Ultraviolet radiation is electromagnetic radiation occupying the spectral range between visible and x-ray radiation. This is electromagnetic radiation, therefore its rays have different wavelengths in the range from 10 to 400 nanometers. Rays are divided into 4 groups depending on the wavelength:

• the shortest rays are called extreme ultraviolet (10-121 nm), which has the abbreviation EUV / XUV;
• far range - short-wave ultraviolet (120-280 nm) or UVC;
• medium-range - medium wave ultraviolet (280-315 nm) or UVB;

near range - long-wave ultraviolet (315-400 nm) or UVA.

The study of ultraviolet radiation began in 1800. In medicine, it was used almost a hundred years later, when in 1892 it was discovered that ultraviolet light destroys bacteria and microbes. For the first time, a quartz lamp for medical use was made only in 1906.

UVC rays have a negative effect on many microorganisms. It is because of this ultraviolet lamps are widely used in medicine and in everyday life to combat various viruses. As a result of UVC irradiation, all infectious microorganisms die both in the air and on surfaces: viruses, bacteria, mold, fungi, yeast, spores.

Why does it happen? The fact is that under UV light, viruses lose their activity, cease to multiply. Ultraviolet radiation destroys the structure of viruses RNA and DNA, which leads to the microorganisms’ loss of their functions.

The greatest danger to viruses is UV radiation with a wavelength of 180 to 280 nanometers. It is in this range of modern bactericidal and quartz lamps which are actively used to combat not only viruses but also other microorganisms work.

Scientists tested disinfection lamps based on short-wave ultraviolet radiation with a wavelength of about 220 nm. According to scientists, such lamps effectively kill viruses and at the same time do not harm the human body.

Such rays are not able to penetrate even the upper layers of human skin, consisting of already dead cells. They are also safe for eye tissue. At the same time, the microscopic dimensions of bacteria and viruses let these rays impact them, destroying the DNA of pathogens.

The technology was tested in a closed room, depicting a hospital corridor: a liquid containing a common strain of the H1N1 influenza virus was sprayed in it. Researchers said that with the help of a "soft" lamp it was possible to destroy more than 95% of the sprayed viruses.
Different lamps have different spectra of UV radiation. But they all have an effect on microorganisms. Even if ultraviolet light does not destroy the particles of the virus, it causes mutations in them, changing the structure of DNA and RNA. Thus, in fact, the virus remains on the treated surface, however, it loses its basic properties and ability to multiply and is not dangerous anymore.

Of course, a quartz lamp cannot cure a carnivorous. But it is able to put a barrier on its path to a person. Doctors say that COVID19 can live on the surface outside the body for up to 10 hours. Quartzing will be very useful in this case. The lamp is useful for processing pieces of clothes. True, exposure sometimes causes tissue fading.

This is the lamp’s main purpose - treatment and disinfection. Lamps come in different capacities and performances. An ordinary standard lamp is capable of processing a room of 200 square feet.

In order to disinfect the room with an ultraviolet lamp, you must take the following steps:

Free the room from people, plants and pets.
Place the lamp in the center of the room or the place from where the rays will spread to all objects as much as possible.
Wear safety glasses.
Turn on the lamp.

Room processing is carried out within 30 - 40 minutes. Then it must be ventilated for 5 to 7 minutes. Try to carry out the procedure at least twice a day.

Precautions when using ultraviolet lamps are very important. We are dealing with radiation, which with direct and prolonged exposure to humans can cause burns. But in compliance with safety standards, an ultraviolet lamp will no doubt become your assistant in the fight against viruses.

With such a lamp, you can safely stay at home without fear of an unwanted guest named COVID-19.

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