Whales are made of meat, and it s okay to dive to a depth of 10,000 meters, so why are submarines ma

Seawater pressure refers to the force exerted by a seawater column of a certain height on an area of 1 square centimeter at its bottom. For every 10 meters of depth, the pressure increases by one atmosphere, and the pressure at the bottom of the ocean is about 100 atmospheres for 1,000 meters. One atmosphere of pressure is, that is, 1 kilogram of pressure per square centimeter.

The pressure of 100 atmospheres is extremely terrifying, bearing a weight of 1,000 tons per square meter.

Whales, as the overlords of the sea, are very capable of diving. However, to correct a little, even whales cannot dive to a depth of 10000 meters. Fin whales can stay at a depth of 300-500 meters for up to 1 hour.

Toothed sperm whales can dive up to 2,000 meters and remain in the water for up to 2 hours. At a depth of 2,200 metres in waters near Lisbon, the capital of Portugal, sperm whales were found to have been suffocated by cable entanglements, the deepest dive ever recorded by a mammal.

At a depth of 2,200 meters, it is equivalent to more than 2,000 tons of pressure acting on the whale's body. How can flesh and blood withstand the pressure of terror? I have to sigh at the miracle of creation, although whales are mammals, they also have all the physical characteristics of fish.

In order to adapt to the environment, the muscle tissue of the whale becomes particularly flexible, the fibrous tissue is extremely fine, the bones are easy to bend, especially the skin of the fish can fill the physiological tissues of the fish with water, and maintain the balance of pressure inside and outside the body.

Not only that, but whales also have special physiological structures to resist pressure in the water. Take sperm whale as an example, there is a brain oil substance in its brain, brain oil slowly solidifies at a temperature lower than 29 degrees, so that the density increases, the center of gravity moves forward, and it can dive deeper, in the deep water area, the whale's ribs and sternum, vertebrae are very loosely connected, and the dive shrinks with the increase of external pressure, and the lungs also contract, and the alveoli of the water depth of about 100 meters below are completely contracted, and no longer carry out gas exchange, the whale's blood will be rich in oxygen, and the lungs can be greatly reduced, in such a state, The internal pressure of the whale's body is strong enough to resist the external water pressure, while the lungs are not harmed.

The hull of the submarine is composed of pressure plates, a mesh support system and a main stress structure, which cannot be softly adjusted like a whale during the dive, and can only be supported by stress. <>

When the submarine is diving, the pressure-resistant structure of the submarine has to withstand strong deep water pressure. The pressure-resistant structure of the submarine includes a pressure-resistant hull, a pressure-resistant command room, a pressure-resistant liquid tank and a transverse bulkhead. The pressure-resistant hull of a submarine is generally composed of high-strength steel shell plates, ribs and transverse bulkheads.

The shell plate is the main component to ensure the strength of the submarine, and the ribs are in a circular shape, arranged laterally inside or outside the shell. The strength of the pressure-resistant structure of modern submarines allows the submarine to dive to a depth of 300 900 meters. Once the high-strength steel plate on the outside of the submarine cannot support the pressure of the seawater, the pressure difference between the air-filled submarine inside and the outside seawater will squeeze the entire submarine, just like a balloon being burst.

Because whales are creatures, they can be adaptable, and because of the cells, they can withstand strong pressure, and steel is just a push of iron, and if it can withstand it, it can withstand it, and if it can't bear it, it can't bear it, but the whale is different, his ** is elastic and can return to the previous appearance.

Because the pressure difference between the two is not the same. The pressure is generated by the pressure difference, the pressure difference between the inside and outside of the whale is small, if the submarine is opened, the internal and external pressure is the same, and the submarine will not be flattened.

Is meat elastic, steel elastic?

Isn't it good to go to the whale first? Wouldn't it be good to go to the whales first? No whale can dive to a depth of 10,000 meters.

It is normal for this situation to occur, then there is an atmospheric pressure in the environment we live in, so there is also this pressure in the sea, so once we reach a very deep depth, then this pressure is very large, at this time, then the pressure on the object is very strong, and the reason why they cause this submarine to be flattened is also because of this pressure If you enter a very deep sea, then this pressure is very largeThe reason why this whale is fine in this sea is because this goldfish has lived in such a deep sea since he was a child, so his body will slowly adapt to this pressure <>

The goldfish is under the very strong pressure, then his body slowly adapts to the environment, and in order to adapt to the environment, his body will gradually undergo some changes, then it will be more adapted to the pressure of the environment, as time slowly passes, then the whale's body slowly changes, so that it is more adapted to the pressure of the environment, which leads to his body problems in such a deep sea, and it will not cause problems in his body because of the pressure. It is precisely because of its adaptability, because in order to adapt to the environment, every animal will make certain changes in their bodies and adapt to the environment <>

And the reason why this steel submarine will be flattened in the sea at a depth of 10,000 meters is because this steel submarine, then it is not a living thing, it belongs to a machine, so if this machine is a machine, it will not make any changes in the face of such a strong pressure, so in the face of such a strong pressure, it is natural for him to be flattened, and if the pressure exceeds the pressure that this prospect can bear, the natural person will be flattened, he is not like a whale whale belongs to a living organism and belongs to an animal, In order to adapt to this environment, animals will gradually change the structure of their bodies, and in order to adapt to this environment, they will subtly let their bodies adapt to the pressure <> of this environment

In general, it is because whales change their bodies in order to adapt to the environment, so that their bodies can better adapt to the environment, and the premise of steel is that it is a mechanical type, which basically cannot change its own structure, so this situation will appear.

Since the whale is a product of tens of millions of years, its own structure adapts to the pressure of seawater at the bottom of the sea, but the ship is an artificially built iron frame, which can be deformed under the pressure of the seabed.

It will rust in the city for a long time, and then because the inside of the hull is empty, the pressure is different, so it will be deformed by the pressure.

It's because whales' lungs are different from ours and can automatically regulate water pressure, but our steel really can't withstand the pressure from the water.

The pressure in the water is related to the depth of the water p = gh, and for every meter of depth, the pressure increases by one atmosphere, and at a depth of 1000 meters, the water pressure is up to 97 atmospheres, which is equivalent to carrying 970 tons of weight per square meter. The whale's body has evolved over a long period of time and has evolved the ability to adapt to deep-sea diving, but there is also a limit, generally whales only move in shallow waters above 500 meters, while sperm whales can dive up to 2000 meters, and the whale's body can not withstand it no matter how deep.

<>, military nuclear submarines generally have a maximum diving depth of about 300 meters, and even if they are specially built nuclear submarines, the maximum diving depth is only 700 meters, which cannot be compared with the diving depth of whales. When the whale dives into the deep water area, the whale's lungs are greatly reduced, and the internal pressure increases, which is used to resist the water pressure outside the body, so that the pressure inside and outside the body is balanced, which is the reason why the whale is not flattened; However, there is also a limit to the increase in pressure in the whale's body, and after exceeding the limit, the whale's body cannot bear it.

Since the nuclear submarine needs to be manned, the atmospheric pressure of the human body needs to be maintained at about 1 atmosphere, and the internal pressure does not have much room to adjust, so with the increase of the diving depth, the pressure difference between the inside and outside of the submarine is getting bigger and bigger. Nuclear submarines do not have the ability to resist deep-water pressure by increasing internal pressure like whales, and can only rely on metal structures to resist, so the diving depth of nuclear submarines is very limited. However, for deep-sea submersibles for scientific research, the structure itself is simple, and it also adopts a multi-layer step-by-step pressurization structure design, so it can dive to a depth of 10,000 meters on the seabed.

Organisms often use similar principles to adapt to high-pressure environments, such as organisms at 10,000 meters in the Marinaya Trench, which are filled with high-pressure bodily fluids to balance the pressure inside and outside the body. Even we humans do this, an atmospheric pressure is equivalent to 10 tons of weight per square meter, but the pressure in our human body is also about one atmosphere, so the pressure inside and outside the body is basically balanced, and the human body will not be flattened by atmospheric pressure.

First of all, it is common sense that whales cannot dive that deep, and although the submarine hull is made of steel, the deeper the water, the easier it is to be flattened, because the inside of the submarine is empty, and the pressure on both sides of the submarine hull is different.

Mainly because whales have very hard bones and thick fat, which can effectively resist water pressure.

The whale is alive, it is a fish, while the submarine made of steel is hard and not very good at floating.

Because whales have very dense bones and strong muscle tissue, they are able to resist water pressure.

The body structure of the whale is very complex, and it is able to balance the pressure through its body in the water, so it will not be flattened.

When a whale dives into deep water, the whale's lung capacity is greatly reduced, and the internal pressure increases, which is used to resist the external water pressure, so as to properly balance the internal and external pressure. That's why the whale wasn't crushed. But there is a limit to the amount of pressure whales put on their bodies, and beyond that, their bodies can no longer withstand it.

Because the sperm whale's body structure is well adapted to deep water environments, such as the lungs can contract, coupled with strong bone support, resulting in a strong ability to resist pressure, so it will not be flattened.

Because steel is not adapted to the environment of the seabed, the pressure on the seabed is enough to flatten this military submarine.

Because sperm whales have always lived in the sea and have long been accustomed to the pressure in the deep sea, they are fine.

It has the ability to adapt to the deep waters of the ocean, and its diving capabilities are unmatched. Because of its large size, it cannot be crushed. In fact, whales are animals that need oxygen and can drown just like humans.

The lungs of whales are comparatively larger. As a result, they can stay in the water for hours after a change in sea level, and the whale's lungs can contract, increasing the internal pressure. The exoskeleton is resistant to local pressure.

On top of that, an excellent way to store oxygen binds haemoglobin and muscle to oxygen, making it the primary oxygen for deep-sea diving**.

Sperm whales take more than two hours per dive, and they need to have enough oxygen in reserve. Sperm whales change 90% of their oxygen with every breath. Not only the lungs, but also the respiratory system and muscles of sperm whales store oxygen in their breath after a dive.

After breathing, in the face of the huge pressure on the seabed, you have to know that the deep sea below 2,000 meters is subjected to more than 200 kilograms of pressure per square centimeter. As the dive increases, the pressure of the sea increases, and the sperm whale's body also deforms and becomes less under pressure. Sperm whales contain fluid substances such as blubber in their bodies, which can wrap the internal organs and prevent the internal organs from being damaged by the changing body under pressure.

When sperm whales dive, their metabolic rate will continue to decrease, reducing oxygen consumption and fighting against deep sea temperatures. Internationally, relevant international organizations have been naming the sea area with a depth of more than 1,000 meters as the deep sea. I'll give you a slightly more vivid example, because at this depth, the pressure of 1000 meters is about equal to a 500-pound fat man moving back and forth on you.

Just thinking about it is unbearable. One might ask that at depths above 1,000 meters, the pressure is so great that even metal can be easily crushed.

Why are the fish safe there? Humpback whales can dive more than 2,000 meters, but the average depth of military submarines is several hundred meters, which is really powerful. It is important to know that whales are large, pure mammals, not smaller fish, and breathe through their lungs just like humans.

If so, the problem is because the pressure in the ocean is directly proportional to the depth, so whales can dive into the deep sea without being crushed. Generally, military submarines (such as nuclear-powered submarines) have pressure-resistant hulls, but the hulls cannot be freely deformed under pressure. The submarine has all kinds of instruments and equipment inside, and every inch of space has been scientifically designed, so the internal volume is fixed.

Under this premise, the maximum depth that a submarine can reach, that is, the maximum pressure that the hull can withstand within a safe range, is usually about one meter.

Because the volume and internal structure of the whale are different, and other animals are different, the lungs of the whale are very strong, and the body is relatively thick, when the whale is diving, the lungs will gradually shrink with the depth of the dive, which can adapt to the pressure of the water depth, increase the pressure in the body, and balance the pressure in the body and outside the body.

The main reason why you can dive to the depths of the ocean is that whales have a super respiratory system, and they are not afraid of even how deep the sea is, which is the specific reason.