The scientific setting of this film is really thin, and anyone with some scientific knowledge can't stand it. The first is diving equipment. At present, Jiaolong can only use spherical crew cabins in the Mariana Trench. The porthole glass is several inches thick; the rigid wetsuit in the film can withstand tens of thousands of meters of water pressure, and the helmets of a few millimeters can withstand thousands of helmets. Atmospheric pressure. The second is the building structure. For buildings with inconsistent internal and external pressures, such as space stations, undersea tunnels, highways and railway tunnels, cylindrical and spherical structures are generally used to avoid structural instability and damage caused by stress concentration; the film cannot be regarded as living area, control center or elevator car. The compartments are all boxy, and they don't have the compressive structural design that deep-sea facilities should have. The entry and exit hatches are also covered with a thin layer of iron, which can actually carry over 10,000 meters of water pressure. The energy issue is again. Mining workstations use nuclear fusion as energy, and they have to go to tens of thousands of meters of seabed to extract oil. Are mining companies stupid? In addition, the Mariana Trench is the place where the Pacific plate and the Eurasian plate collide. It should not be a sedimentary stratum, and there is no oil. It is a little reliable to say that it is mining geothermal, but you don’t have to go anywhere to extract geothermal. Isn't the ridge a better place?
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Regarding diving suits and building structures, since my major is related to this, I would like to say a few more words:
Under tens of thousands of meters of water, the external pressure is thousands of times the standard atmospheric pressure. If the diving suit and the internal and external pressures of the building are the same or not much different, then the hard or soft diving is not a big problem, and there is no need to consider compression resistance. The problem is that the structure of the building does not need to resist the stress caused by the pressure difference, and a square structure can also be used; but under such pressure, if humans breathe air, the problem of dissolved gas in the blood will be fatal.
And if the internal pressure is one or several atmospheres (it looks like the movie is set in this way), then to resist the pressure difference of thousands of atmospheres, the best solution for the building is a spherical structure. If it is angular or elliptical, it must be due to stress concentration. In the case of structural instability, unless a large amount of material is used to resist stress, it is extremely uneconomical from an engineering point of view. As for diving suits that require flexible movement, with such a strong pressure difference, the bearings that do not leak and move flexibly are basically Impossible-modern materials are far more advanced for low-pressure environments (space) than for high-pressure environments.
As for the so-called Cthulhu monster that makes many people GC, it is part of the plot, not the background setting, and it has nothing to do with science, and it is beyond the scope of this article.
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Originally, I didn't want to respond to the netizens who scolded me; but some words are too uncomfortable in my heart, let me say:
You have your attitude, and I have my stand; you can praise this movie as much as you want, and of course I can criticize its problems.
Perhaps my rating makes you uncomfortable, but as a netizen said, if the basic logic of film production cannot be justified, it will make you lose the immersive sense of substitution and disrespect the audience; there is also a saying "basic" Not firmly shake the mountain", as the basic background of the film story, the flaws set by science will lead to doubts about the plot of the whole film and affect the sense of substitution in watching the movie. This is also the reason why I rate it like this; not to mention it. There are old-fashioned frightening routines, bugs with siren sound, etc...
It's your business that you like this movie, I don't like it!
So be it. (Updated in the evening of 2020.04.08)
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Many people said that this film took place in the future. At that time, it was discovered that new materials could solve the pressure problem. What is Balabala...
What I want to say is that no matter when it happens, as long as it is on the earth, then the basic laws of physics will still work, and the structure of the building structure to resist stress must be the same as it is now; even if there were better materials at that time, From the perspective of economics and engineering, it is bound to choose the same structure as it is now.
The problem of diving suits is more complicated. If the internal pressure is one atmosphere or slightly higher, then the material must be pressure-resistant. It is ridiculous that the female second fire extinguisher can easily smash the mask; if the internal pressure is equal to the water pressure, The material problem can be ignored, but the physiological structure of the human body is completely unable to hold thousands of atmospheres. If you can take 10,000 steps, even if it can hold such pressure, it will dissolve in the blood when it floats rapidly (as in the rescue capsule). The evolution of the gas will kill him immediately.
So don’t tell me that these problems can be solved in the future. As long as we are still on this earth, the laws of physics must be the same. All the basic physics knowledge can be used to analyze these problems, and the results must be the same as my original analysis. . (Updated in the evening of 2020.04.14)
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