What is rarefied air. How to create rarefaction in the air in a simple way

Do not rush to throw away empty bottles that have accumulated after the holidays, you can do one spectacular experiment with them. You will need a container of water. Pour some water into the bottle itself. Then put it in the microwave for one and a half to two minutes to bring to a boil. Then we carefully take it out, without lifting the neck up so that the steam does not come out.

Dip into a container of water. If you do everything quickly, you can observe the reverse process: the condensation of steam and filling the bottle with water. Nothing worked at the beginning. Condensation was somehow sluggish and uninteresting. The experimenter changed the heating time and the amount of water from the bottle, took in colder water, but this did not change the picture.

The critical parameter was the glass temperature of the bottle itself. The more it heats up, the slower the process of steam condensation. With a small bottle, everything was completely bad ... Everything turned out only in the evening ...
It is certainly not a vacuum. But the underpressure is quite decent. And most importantly, simple and clear to understand.

discussion

Igor Beletsky
+ enikeys4ik yes, it was the first time, I even put plastic on the bottom of the vase so as not to break it, but it sticks to the neck and does not allow water to be absorbed. Not everything is as easy to do as it might seem in a short video.

Peolepol
+mvandreymv The steam in the bottle displaced the air, when the bottle was lowered into the water, it sucked in water as a result of the formation of condensate (steam turned into water), some emptiness formed. As they said in the video: “Nature does not like emptiness. ”

Das
+ peolepol as I understand it, there is not a set of water in the bottle being observed, but a sharp zilch, which turned out 2 times in the video. What is it, why is it happening and what's the catch - I also could not understand.

Airaleais
+ker arkad the steam cools evenly in the bottle, and at a certain temperature it begins to condense, drawing in water accelerates the condensation process, water bursts into the container even faster, at a certain moment all the steam simultaneously in all areas drops to the condensation temperature, which is why it soaks up water so sharply.

Kovalev Lev
+ker arkad water vapor displaced air. When the bottle was dipped in cold water, the steam began to condense, and there was almost no air in the bottle. Thus, the pressure in the bottle drops sharply, and the external atmospheric pressure pushes the water into the bottle.

maxim tepluk
there was an idea to try to achieve a good vacuum in a sealed vessel due to chemical reactions. For example, a vessel to be evacuated should be purged with oxygen, displacing air from it. Then seal. And the final step is to convert the oxygen contained in the closed vessel into a solid substance of some kind of oxide, maybe a metal. For example, to burn with an electric current a wire spiral placed in a vessel in advance.

Petr Timchenko
but drawing water into a bottle is not so interesting, it will be much more interesting to attach a pressure-vacuum gauge to the tank and detect a “dry” rarefaction with external cooling of the tank and internal condensation of vapors in the mixture.

Mrdeltik
Wow, got it right the first time! True, when the zilch happened. I took a bottle of quail vodka, 0.7l. He poured so that the lying did not spill out. Heating time - 3 minutes at max power.

Mrdeltik
+ Igor Beletsky,
I am delighted. Already scared my wife too. Recently I showed my son how to put an egg in a bottle - he is 7 years old, and I tried to explain the expansion / compressibility of gases. But this effect is much more spectacular (although it is not related to compressibility, but you can be cunning). I am grateful to you - I have like and subscribed already.

Ivan Ivanovich
there will be no deep vacuum here, not even close! Mislead people. But people's interest in such experiments is increasing.
It's already good.

steppeez
Well, a water-steam vacuum of such depth is not enough to even ignite a smoldering electric discharge in it. And it’s also not clear in this video that water (it’s not even fine dust of snow crystals) gushing into the volume of the bottle is not through a nozzle brought to perfection and without fine spraying of the refrigerant in the volume of the bottle, i.e. not in the way it is arranged in workers chambers of vacuum steam-breathing heat engines.

Pukan pukanovich

sergey family
if you combine a steam engine with a vacuum engine in one design and power it from a solar concentrator or even better from catalytic combustion. I think it will be a very entertaining video.

Dmitry litovchenko
like! I am your subscriber! Igor, you and Creosan are my favorite experimenters! You are the toughest of all! Courage is your thing! Igor! Huge request! Add some safety instructions to the video! People are not yet immortal and mutilations do not adorn us yet!
Think about the picture: polytraumatology or burn department for subscribers of such channels! It could be real soon!
Real - 1995. Odessa hospital of eye diseases. V. P. Filatov, children's burn department! Seven blind boys from 11 to 14 years old, putting their right hand on the shoulder of the one in front! The first distinguishes shadows and can navigate a little! That's why he's in charge! And in the evening, on a large and beautiful balcony, with a guitar, he sang a song with the words “Dad, what do clouds look like? Sitting next to him was his stone-faced mother. The boys were from the Donetsk region, children of miners. Curiosity and ignorance forced to throw an oxygen cylinder into the fire. And the light went out. And the masters of life will have to be reviewed.

Safe curiosity - rapid progress!
Illiterate curiosity - at best, a quick death!
It is rightly said: “It is not the fool who is terrible, but the fool with the initiative!

Thank you very much for your understanding and quick response! An accident can happen at any moment. Youtube is open 24/7! The author is sleeping, and the children are jumping in a noisy crowd into the next world! Remember this! You are welcome! This is not a joke! I know what I'm talking about! I am disabled! And on the safety pages 2.5 liters of my blood!

Petr Timchenko
An example of the operation of Dalton's law: "the pressure of a mixture is equal to the sum of the partial pressures of its constituent components." Air-water vapor mixture. During condensation, the partial pressure of the vapor decreases, while the air remains constant. The mixture loses its total pressure and a vacuum occurs. A greater vacuum in the vessel can be achieved by condensing the air itself, and then there will be a real “supervacuum” (within the limits of the possibility of physics). I did not watch the video in principle in order to analyze the situation myself.

Anatoly parkhomenko
what does it mean when it rains - rarefaction? Or in this case, the steam replaced the air and, having fallen into the condensate, dragged the liquid along with it? The steam has completely displaced the air and the pressure of the steam is less than that of the air, the pressure difference squeezes water into the bottle! Cool!

Eugene e.
As soon as you start to heat it, it will immediately boil - i.e. Part of the water from the liquid will quickly turn into steam, the pressures will equalize and the “boiling” will stop until the next increase in temperature.
The explanation is simple - boiling begins when the saturated vapor pressure becomes equal to the external pressure.

Eugene e.
That is, in a bottle, vapor and liquid will be in thermodynamic equilibrium - how many molecules fly from liquid to vapor, the same number will fly back. If the temperature is raised, the rate of evaporation will be greater than the rate of condensation.
If the temperature is raised slowly, then bubbles may not be seen, since there is enough surface area to provide the desired evaporation rate. If you increase it quickly, then bubbles will go - the very “boiling”

ivan88587
no, it’s not air that draws water, because air is not steam, it does not condense when cooled and does not create a vacuum. Steam is heavier than air and displaces it in any boiling container, and then, if the container is closed, condensing into water, it forms a vacuum.

gustafa111
from this series: we take a 200l barrel (for example, from a solvent), fill it with water, boil it (you can immediately catch steam there, it’s easier) and let it cool (with the lid closed!), It’s important not to touch it until it cools down) then we throw a stone at it and it collapses, (while tearing the fabric of the universe, forming a black hole, which will swallow the earth). By the way, very spectacular.

Alik litvinov
I also invented different ways to get a vacuum, remade a bicycle pump, etc. And then I bought this thing http: //lavrplus. Prom. Ua/p52544665-vacuumnyj-nasos-2rs. HTML
True, it cost 1200 hryvnia in 2013, and not 2700, as it is now. This pump creates a vacuum that is sufficient, for example, for experiments on boiling water at a temperature of only 2 - 3 degrees. And if you need a high vacuum, as in a kinescope, you also need a turbomolecular pump, unfortunately, its price is not affordable for a mere mortal, about 20 thousand hryvnias.
High vacuum became available to people only some 120 - 150 years ago. It’s hard to believe, such a simple and at the same time difficult to achieve substance.

Igor Beletsky
+ max frosts because there are no schoolchildren who watch more often and a lot. Post a link to this video on social networks, help me promote the channel and do cooler experiments, it's all in your hands!

Smdfb
Igor, you have probably seen a bunch of videos on the Internet about infinite energy (like how they take a surge protector and its light bulb is always on). How do you think these pranks are done? All that comes to my mind is only electro-magnetic induction. Somewhere nearby there must be a source that creates an alternating electro-magnetic field. Is it so?

Igor Beletsky
+ den and of course they won’t show it and didn’t show it to anyone, because as soon as they heat up a bottle of water quickly without a microwave, this iron can can be heated, but then you won’t see the whole beauty of the process.

Id vlog
Igor, please help me to solve the problem. In the socket electromechanical timer https: //youtu. Be/kgf51me3xms the mechanism is driven by a roller-magnet rotating in a magnetic field created by a coil from 220 V. Can the coil be rewound (and how?) so that it runs on 2 AA batteries. And how to arrange permanent magnets on iron brackets so that it works only from magnets. The first question is more important. Thank you.

Igor Beletsky
+ azpuka kusa to do goodness is long and difficult, try to do at least something yourself, but while complex experiments are being done, it was necessary to lay out something so that people would not forget, is it really difficult to guess yourself.

Azpuka kusa
+ Igor Beletsky (investigator) if you do a rather complicated experiment, then the audience will be attracted more, so everything will pay off. Looking forward to some cool stuff from you

Igor Beletsky
+ azpuka kusa I understand this very well and now I am preparing two such experiments at once, but until you bring them to a normal look, a lot of time passes, you haven’t posted at least one video a week and that’s all - don’t wait for the channel to grow.

Igor Beletsky
+hofrin rus Yes, this is school physics, but you don't want to say that you or any of us were shown this at school before, or even more so today.

Andrey Rybin
the effect is not well explained, i.e. what causes the vacuum in the bottle? As a result of the fact that water is heated, and air is heated from contact with it, then it expands and is forced out of the bottle?

Petrogor
+ Andrey Rybin To understand, you need to pay attention to how water vapor differs from air. Steam, when water boils, displaces all the air from the bottle and in fact there is almost no air left in the bottle. The bottle contains only water in the gaseous state. When water passes from a gaseous state to a liquid state, a rarefaction occurs.

Mikhail Poluchankin
I didn’t understand why, how it turns out, but if you heat the bottle in oil to 120″ and do the same? Probably burst. I have not woken up yet, but something seems to me that in order for steam to form, a hot, dry surface is needed. And in the video, you are in a hurry to drain the water, while the bottle is moistened, the water rises smoothly, and when it comes to a dry surface, steam is formed.

Aquadevice
now you can make a reciprocating steam vacuum engine. The efficiency will be much greater than that of a conventional steam locomotive. And if the working fluid is not water, but light-boiling, then you can use the natural temperature difference.

Igor Beletsky
+scwobu if there is such an effect, then there will always be a use. For example, the same suction cup (attach something quickly to a smooth surface), or a primitive pump to quickly pump something out, etc.

Igor Vorob
+ igor beletsky (investigator) I understand illiterate half-educated schoolchildren, they don’t know when to write “to”, and when “what” with a particle of the subjunctive mood “would”.
But it seems you consider yourself a popularizer of science. Be more attentive to literacy, huh?
Thanks for the experience, by the way. Only for those who confuse “ts” - “tsya”, “to” and “what would” - it would be nice for them to explain the essence of the phenomenon. And the most accessible.

Format128
and I
a nuclear power plant costs, for example, a billion. But if every day a couple of million people pay 2 rubles each, then it pays off. What percentage uses solar panels? So you can't sell them cheap.

trapwalker
it is possible to make an efficient vacuum pump for pumping air in large volumes. It is necessary to lead a thin tube from the steam generator into a strong container, coaxial valves block the steam supply pipe and switch the volume of the container to the pumped circuit. After that, the container must be cooled to condensation and the valves must be switched back. The installation can be easily scaled up by a factor of two by installing a similar tank with valves in antiphase.

Nikolay pshonnikov
+trapwalker s https: //ru. Wikipedia. Org/wiki/%d0%9f%d0%b0%d1%80%d0%be%d0%b2%d0%b0%d1%8f_%d0%bc%d0%b0%d1%88%d0%b8%d0 %bd%d0%b0_%d0%9d%d1%8c%d1%8e%d0%ba%d0%be%d0%bc%d0%b5%d0%bd%d0%b0

trapwalker
+ Nikolai Pshonnikov in my description, no piston is provided. Piston, cylinder, o-rings - this is exactly what is very difficult to get at home. But plastic pipes, fittings of any diameter and ball valves in any hardware store are sold very inexpensively and are easily mounted without special skills.

Trapwalker
+ bang bang. I did not understand something, if this is not a question, then. Why? Explain. If the question is. Xs. It's pretty useless. I like to generate ideas, this is my hobby, but these ideas don’t go anywhere (for the most part), because it’s not my hobby anymore (for the most part.

Jwserge
fuck off
straight discoveries made for myself
THX.

Igor Beletsky
+jwserge I saw videos of how aluminum cans and even large barrels collapse in this way, but I haven’t seen anything that water would fly into there, so I decided to try it.

Alexey Belousov
Even I didn’t understand, there is still air there when the neck of the bottle is dipped into water. But where does he go then? Does it dissolve in water? It is not clear in general.

Glukmaker
18 grams of water in a gaseous state at atmospheric pressure occupies a volume of 22.4 liters
so it takes about 1/3 cc of water to fill a half liter bottle with steam. Therefore, if the steam has displaced all the air from the bottle, and immediately cork it, then a decent vacuum will occur there.

Andrey sc
+nradrus no. The maximum pressure that can be achieved in this way is equal to the pressure of saturated water vapor at the temperature of the experiment. Even at zero Celsius, it is about 600 pascals, which is a lot for lamps.

Id13
+andrey sem
, it is possible with something that is already activated above the boiling point of water at the existing pressure. I.e. First, plugging with 100% water vapor and a supply of reagents and a structure (radio lamp for example), then calcining to activate a chemical substance that absorbs water.

What is rarefied air? Explain to me like a fool what rarefied air is ...

  1. So the guys want to reassure everyone ... First of all, the molecules are not getting smaller! they simply move away from each other… It follows that the concentration of gases does not change, the volume of the gas mixture system changes! And this happens due to a decrease in pressure ... The gas mixture is like a spring, the more you squeeze it, the less volume it will eventually occupy ... The lower the potential pressure, the greater the volume! With the same concentration but a larger volume, our body must ventilate more air, but since the volume of the lungs has its maximum, and is unable to take in more, we experience malaise (hypoxia)
  2. Now, if air is imagined as water, then in a liter jar there will be less than a liter and nothing else will be ... drops of water seem to recede from each other.
    So it is with air
  3. You climb a high mountain and oops! And there is nothing to breathe))
    In general, this is low atmospheric pressure, observed at high altitudes.


  4. Hence the meaning of the word "rarefied" - air. in which molecules are located less often. Because there are just fewer of them.

    I saw. How do you pump up a ball? Air is pumped into it, there are more air molecules there, and since they always move randomly, they now more often hit the walls of the ball from the inside and put pressure on it. Therefore, the inflated ball is so elastic.
    Now imagine that the pump works in the opposite direction - it pumps out air. Of course, the ball will simply flatten - that's all. But if instead of a ball we have a rigid vessel - glass, metal, then it retains its shape and dimensions. But the air (and molecules) when pumping out in it becomes really less. This is what is called rarefied air.

    So rarefied air is obtained artificially. But it also happens in nature. Namely:
    the higher you climb from sea level into the mountains, the thinner the air becomes. Therefore, it is difficult to breathe high in the mountains, climbers even put on oxygen masks. And even higher, where planes fly, the air is even more rarefied. And if the sealing of the aircraft is broken, the passengers will die very quickly. You ask: why do planes climb so high if it's dangerous? Hard economic interests are forcing this: rarefied air is much less dense than below, and therefore offers less resistance. This means that the aircraft can fly at a higher speed, the flight time is reduced, and fuel is saved.

    PS Isn't it time to take a break from physics? . Look at my page (in My world), look through photo albums ...

  5. Anatoly Shodoev Enlightened (48195) 5 years ago
    First of all, I'm not going to explain like a fool. I will explain as a normal student who did not understand the topic a little.
    Secondly, well done. that you spell the word sparse correctly. So many people write discharge, maybe they even think that this word comes from the word "discharge".
    Actually. of course, the word "rarely" is at the heart of it.
    ======================================================
    And how to understand then how to defuse the AK 47 assault rifle? If this word is based on "rarely"?
  6. There is such a thing as pressure. imagine that there is a certain amount of air in the piston, we pull the piston, and now the previous volume has doubled, and there is as much air left as it was before. this will be rarefied air, as opposed to, for example, the pressure of excess air in the tires of a car. And don't call yourself a fool, that's bad
  7. “But how to understand then how to defuse the AK 47 assault rifle? If this word is based on “rarely”?
    Sparse comes from the word rarely.
    And discharge comes from the word discharge.

What is rarefied air? Explain to me like a fool what rarefied air is ...)) and got the best answer

Answer from Anatoly Shodoev[guru]



Hence the meaning of the word "rarefied" - air. in which molecules are located less often. Because there are just fewer of them.
I saw. How do you pump up a ball? Air is pumped into it, there are more air molecules there, and since they always move randomly, they now more often hit the walls of the ball from the inside and put pressure on it. Therefore, the inflated ball is so elastic.
Now imagine that the pump works in the opposite direction - it pumps out air. Of course, the ball will simply flatten - that's all. But if instead of a ball we have a rigid vessel - glass, metal, then it retains its shape and size. But the air (and molecules) when pumping out in it becomes really less. This is what is called rarefied air.
So rarefied air is obtained artificially. But it also happens in nature. Namely:
the higher you climb from sea level into the mountains, the thinner the air becomes. Therefore, it is difficult to breathe high in the mountains, climbers even put on oxygen masks. And even higher, where planes fly, the air is even more rarefied. And if the sealing of the aircraft is broken, the passengers will die very quickly. You ask: why do planes climb so high if it's dangerous? Hard economic interests are forcing this: rarefied air is much less dense than below, and therefore offers less resistance. This means that the aircraft can fly at a higher speed, the flight time is reduced, and fuel is saved.
PS Isn't it time to take a break from physics? . Look at my page (in My world), look through photo albums...

Answer from 2 answers[guru]

Hey! Here is a selection of topics with answers to your question: What is rarefied air? Explain to me like a fool what rarefied air is ...))

Answer from ForShmak[guru]
Now, if air is imagined as water, then in a liter jar there will be less than a liter and nothing else will be ... drops of water seem to recede from each other.
So it is with air


Answer from Stealthy[guru]
You climb a high mountain and oops! And there is nothing to breathe))
In general, this is low atmospheric pressure, observed at high altitudes.


Answer from Alexander[guru]
There is such a thing as pressure. imagine that there is a certain amount of air in the piston, we pull the piston, and now the previous volume has doubled, and there is as much air left as it was before. this will be rarefied air, as opposed to, for example, the pressure of excess air in the tires of a car. And don't call yourself a fool, that's bad


Answer from Joalikaly Güntner[active]
Anatoly Shodoev Enlightened (48195) 5 years ago
First of all, I'm not going to explain like a fool. I will explain as a normal student who did not understand the topic a little.
Secondly, well done. that you spell the word sparse correctly. So many people write discharged, maybe they even think that this word comes from the word "discharge".
Actually. Of course, the word "rarely" is at the heart of it.
======================================================
And how to understand then how to defuse the AK 47 assault rifle? If this word is based on "rarely"?


Answer from ..|.. [newbie]
"But how to understand then how to defuse the AK 47 assault rifle? If this word is based on" rarely "?"
Sparse comes from the word rarely.
And discharge comes from the word discharge.


Answer from Alan Tedeshvili[newbie]
So guys, I want to reassure everyone... First of all, there are no fewer molecules! they simply move away from each other ... It follows that the concentration of gases does not change, the volume of the gas mixture system changes! And this happens due to a decrease in pressure ... The gas mixture is like a spring, the more you squeeze it, the less volume it will eventually occupy ... The lower the potential pressure, the greater the volume! With the same concentration but a larger volume, our body must ventilate more air, but since the volume of the lungs has its maximum, and is unable to take in more, we experience malaise (hypoxia)

    sparse and sparse- Question What is correct: "rarefied" or "discharged?" Sparse and sparse 1) participle from the verb sparse (make less often, separating one from the other at intervals, place at a considerable distance from each other; reduce density ... Dictionary of difficulties of the Russian language

    I. General concepts. II. Types of E. stations for the production of E. energy. III. Their classification. IV. Buildings and premises of E. stations. V. Equipment for electrical stations. VI. Operation of E. stations. VII. Ship E. stations. VIII. Carriage and train E. stations. IX… Encyclopedic Dictionary F.A. Brockhaus and I.A. Efron

    The law relating changes in the volume of a gas at constant temperature with changes in its elasticity. This law, discovered in 1660, Eng. physicist Boyle and later, but, independently of him, Mariotte in France, in its simplicity and certainty ... ... Encyclopedic Dictionary F.A. Brockhaus and I.A. Efron

    - (Bovidae) ** * * The family of bovids, or bovines, is the most extensive and diverse group of artiodactyls, includes 45-50 modern genera and about 130 species. Bovids form a natural, clearly defined group. No matter how ... ... Animal life

    EMPHYSEMA- EMPHYSEMA, emphysema (from the Greek empliy SaO I inflate). This word denotes Pat. a condition, in which there is either an increased content of air in the organ (lung) or its accumulation unusual for this tissue. In accordance with this, they talk about E. ... ...

    - (North-Eastern corrective labor camp) a structural unit of the system of corrective labor camps of the OGPU NKVD of the Ministry of Internal Affairs of the USSR, which existed on the territory of Dalstroy (North-East of the USSR) as its production unit. ... ... Wikipedia

    CLIMATE THERAPY- CLIMATE THERAPY, climate treatment (see), based on knowledge of experimental climatophysiology. K. began to develop only from the middle of the 19th century, although Hippocrates already attached great importance to the state of health of the exposition of the place where this person lives ... ... Big Medical Encyclopedia

    - (anatomy) see Respiratory organs. L., their diseases: 1) tubercles, consumption caused by specific bacteria (see), widespread in almost all countries of the globe. Being a contagious disease, consumption is transmitted by inhaled ... ... Encyclopedic Dictionary F.A. Brockhaus and I.A. Efron

    The sun and the celestial bodies revolving around it 9 planets, more than 63 satellites, four rings of giant planets, tens of thousands of asteroids, a myriad of meteoroids ranging in size from boulders to dust particles, as well as millions of comets. AT… … Collier Encyclopedia

    The atmospheric layer located above 11 km is highly rarefied, with a very low atmosphere; The lower layer of the atmosphere is called the troposphere. There are no vertical currents and no cloud formation in S. The study of S. is of practical importance for aviation, ... ... Marine Dictionary

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  • Excursions to another life. Paradoxical psychology, Konstantin Sevastyanov. The paradox is that a person wants to change his life for the better, but at the same time remain the way he is. Is such a person suitable for a better life? There are two liters of milk in a liter jug...

Mountains attract people with their beauty and grandeur. Ancient, like eternity itself, beautiful, mysterious, bewitching the mind and heart, they do not leave anyone indifferent. Breathtaking views of mountain peaks covered with never-melting snow, slopes covered with forests, alpine meadows are pulling back everyone who has spent a vacation in the mountains at least once.

It has long been observed that people in the mountains live longer than in the plains. Many of them, living to a ripe old age, retain good spirits and clarity of mind. They get sick less and recover faster after illnesses. Women of the middle mountains retain the ability to bear children much longer than women of the plains.

Breathtaking views of the mountains are complemented by the purest air, which is so pleasant to breathe in deeply. Mountain air clean and filled with aromas of healing herbs and flowers. It does not contain dust, industrial soot and exhaust gases. They breathe easily and it seems that you can not breathe in any way.

Mountains attract a person not only with their beauty and grandeur, but also with a steady improvement in well-being, a noticeable increase in efficiency, a surge of strength and energy. In the mountains, the air pressure is less than in the plains. At an altitude of 4 kilometers, the pressure is 460 mmHg, and at an altitude of 6 km - 350 mmHg. With an increase in altitude, the air density decreases, and the amount of oxygen in the inhaled volume decreases accordingly, but paradoxically, this has a positive effect on human health.

Oxygen oxidizes our body, contributes to aging and the occurrence of a host of diseases. At the same time, without it, life is impossible. Therefore, if we want to significantly extend life, we need to achieve a reduction in the flow of oxygen into the body, but not too little and not too much. In the first case, there will be no therapeutic effect, and in the second case, you can harm yourself. Such a golden mean is the mountain air of the middle mountains: 1200 - 1500 meters above sea level, where the oxygen content is approximately 10%.

At present, it has already been clearly established that there is only one factor that prolongs a person's life in the mountains - this is mountain air, the oxygen content of which is lowered and this has a highly beneficial effect on the body.

The lack of oxygen causes a restructuring in the work of various body systems (cardiovascular, respiratory, nervous), causes the reserve forces to turn on. This, as it turned out, is a very effective, inexpensive, and most importantly affordable way for everyone to restore and improve health. When the amount of oxygen in the inhaled air decreases, a signal about this is transmitted through special receptors to the respiratory center of the medulla oblongata, and from there it goes to the muscles. The work of the chest and lungs intensifies, the person begins to breathe more often, respectively, the ventilation of the lungs and the delivery of oxygen to the blood improve. There is an increase in heart rate, which increases blood circulation, and oxygen reaches the tissues faster. This is facilitated by the release of new red blood cells into the blood, and, consequently, the hemoglobin contained in them.

This explains the beneficial effect of mountain air on a person's vitality. Coming to the mountain resorts, many notice that their mood improves, their vitality is activated.

But if you climb higher into the mountains, where the mountain air contains even less oxygen, the body will react to its lack in a completely different way. Hypoxia (lack of oxygen) will already be dangerous, and the nervous system will suffer first of all, and if oxygen is not enough to maintain the brain, a person may lose consciousness.

In the mountains, solar radiation is much stronger. This is due to the high transparency of air, since its density, the content of dust and water vapor in it decreases with height. Solar radiation kills many harmful airborne microorganisms and decomposes organic matter. But most importantly, solar radiation ionizes the mountain air, contributing to the formation of ions, including negative oxygen and ozone ions.

For the normal functioning of our body in the air we breathe, both negatively and positively charged ions must be present, and in a strictly defined ratio. Violation of this balance in any direction has a very adverse effect on our well-being and health. At the same time, negatively charged ions, according to modern scientific data, are necessary for a person as well as vitamins in food.

In rural air, the concentration of ions of both charges on a sunny day reaches 800-1000 per 1 cubic cm. In some mountain resorts, their concentration rises to several thousand. Therefore, the mountain air has a healing effect on most living beings. Many of the centenarians of Russia live in the mountains. Another effect of rarefied air is an increase in the body's resistance to the damaging effects of radiation. However, at high altitudes, the proportion of ultraviolet radiation sharply increases. The impact of ultraviolet rays on the human body is very high. Possible skin burns. They damage the retina of the eye, causing severe pain and sometimes temporary blindness. To protect the eyes, it is necessary to use goggles with light-protective glasses, and to protect the face, wear a hat with wide brim.

Recently, such methods as orotherapy (treatment with mountain air) or normobaric hypoxic therapy (treatment with rarefied air with a low oxygen content) have become widespread in medicine. It is well established that mountain air can be used to prevent and treat the following diseases: occupational diseases associated with lesions of the upper respiratory tract, various forms of allergic and immunodeficiency conditions, bronchial asthma, a wide group of diseases of the nervous system, diseases of the musculoskeletal system, diseases cardiovascular system, diseases of the gastrointestinal tract, skin diseases. Hypoxic therapy excludes side effects as a drug-free method of treatment.