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Why don't we feel the air pressure?

Over our planet dominates a huge air of the ocean. And the man pressed with a force of more than 15 tons. Imagine that you hit 3 of the truck - that's what this weight! But these "trucks" will never crush man. The reason is that the "air column" puts pressure on us not only from above and from all sides evenly. In addition, inside us too there is air. And this air is under the same pressure. The air pressure inside balances the pressure on the body from the outside. That is why we do not notice the pressure on your body.

In the process of evolution, living organisms have adapted to earth's atmospheric pressure, equal to about 1 kgf/cm2. Our inner pressure just equal to atmospheric. But, for example, deep-sea fish have adapted to a still higher pressure. If such a fish out of water, it "explodes", because the pressure inside is higher than the pressure of the atmosphere outside.


 


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Total votes: 143

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Stanka
2013-06-19 10:06:54
The air pressure that we feel, but our high blood pressure is very strong. I have higher blood pressure suffered from strong head and even were polucheniya in the eyes, until I cut indap, I didn't leave the symptoms, and now everything is in order.
Light
2013-02-14 09:26:51
Ale, simply because the pressure is stronger than the man.
Ale
2013-01-16 21:54:16
Why atmospheric column is not crushed man? Us teacher asked. grade 5
Toja
2012-10-01 07:48:29
well, you and nerds;)
Paul
2012-07-09 01:30:26
The pressure in the closed circuit is constant, in this case, the internal pressure in man, i.e. the pressure on the body's cells and microflora same!! About that fluid pressure is greater than dalvenie air is the same as kg of iron is heavier than a kilogram down=))
Peter
2011-11-05 18:13:11
This is understandable, but why the pressure outside them less?
Valery
2011-10-29 16:40:31
The bacterium is experiencing the same pressures that people, no more and no less. Therefore, the internal pressure of the bacteria to anything to be greater than the internal pressure of the cells of the human body.
Peter
2011-10-29 14:50:11
And why the pressure on them less?
Constantine
2011-10-27 04:43:00
Peter, why do they need to be stronger? The pressure on them is much less, according to their size.
And "internal pressure environments of the body" are also large is the osmotic pressure of the cytoplasm.
Peter
2011-10-27 03:51:52
Although now another question arises with man-that figured out, but what about for example with bacteria and other microorganisms? Logic to withstand the same pressure they must be "stronger", roughly speaking, because they have the pressure environment of the organism on any will be less.
Or not?

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