What will happen in the open space with a man without a spacesuit?
1. A person does not become instantly piece of ice?
Heating or cooling occurs either due to contact with a cold environment, or through thermal radiation.
In vacuum environment have not in contact with anything. To be more precise, the present very vacuo discharged gas, which due to its very poor yields of discharge effect. The vacuum thermos used just to keep warm! Not having contact with a cold substance, a hero at all will not feel the searing cold.
2. Freezing have long to
With respect to radiation, the human body hitting the vacuum will slowly dissipate heat by radiation. The thermos flask make wall mirror to keep radiation. This process is rather slow. Even if there is no astronaut suit, but there are clothes, it will help keep warm.
But you can get a tan. If it happens in the space close to the star, it is possible to get a sunburn on exposed skin areas - both from excessive tanning on the beach. If it happens anywhere on the Earth's orbit, the effect will be stronger than on the beach, as there is no atmosphere, which protects against hard ultraviolet. 10 seconds is sufficient to produce a burn. Yet this is not a burning fever, besides the clothes should also be protected. And if we are talking about a hole in the suit, or a crack in the helmet, then the subject can not worry.
4. Boiling saliva
liquids boiling temperature depends on pressure. The lower the pressure, the lower the boiling point. Therefore, the liquid will evaporate vacuo. It was found in experiments - not immediately, but the saliva begins to boil, as the pressure is almost zero, and the language of the temperature - 36C. Apparently, the same thing will happen with all mucous membranes (in front, in the lungs) - they will dry out, if only because the body will not receive a new mucus. By the way, if you take not just a liquid film, and a large amount of water, then, perhaps, will be an effect as in "dry ice": the outside of the evaporation, the evaporation of fast heat is lost due to this inner part freezes. It can be assumed that the water ball partly evaporate in space, but otherwise turns into a piece of ice.
5. The blood boil?
Elastic skin, blood vessels, the heart will create enough pressure, so that nothing is boiling.
6. Effect of champagne, too, is not expected
In divers have such trouble as the bends. The reason - what is happening with a bottle of champagne.
Besides boiling there is dissolved in the blood gases. When the pressure drops, the gases are converted into vials. The champagne exits dissolved carbon dioxide, and in divers - nitrogen.
But this effect occurs at high differential pressures - at least several atmospheres. And if it enters the vacuum drop just one atmosphere. The article on this subject does not say anything, no symptoms are not described - apparently this is not enough.
7. The air inside the break?
It is assumed that the victim of his exhale - and therefore does not break. And if you do not exhale? Assess the threat. Let the pressure in the suit is maintained at 1 atm. This 10 kg per square centimeter. If a person tries to hold his breath, the air on the way raises the soft palate. If there is an area at least 2 * 2 cm, then get a load of 40 kg. It is unlikely that the soft palate survive - people exhale itself as a deflated balloon.
8. The person suffocates?
This is the main and real threat. I have nothing to breathe. How many people can survive without air? Trained divers - a few minutes, an untrained person - no more than a minute.
But! It's a breath when the lungs full of air with oxygen radicals. And then, remember, it is necessary to breathe. How simple a person can survive on the exhale? But 30 seconds! On the exhale, the lungs do not "skukozhivayutsya" to the end, there is little oxygen. In space, apparently, the oxygen will be even less (much able to keep). A specific time in which the person will lose consciousness from asphyxiation known - about 14 seconds.
- People in space become taller.
- Facts about the cosmos with the words of the astronauts themselves.
- Why are the photographs from space do not see the stars?
- Is it possible to see the sunrise and sunset of the Earth on the Moon?