owlsbooks Chapter 2202
Chapter 2202
Chapter 2202
Today was really exciting.
This is true for all of humanity!
An earthquake that affected the entire world made people all over the world feel what fear is from the bottom of their hearts!
Humans are actually very arrogant. The most typical sentence is "man is the most intelligent creature in the world"! Humans always regard themselves as the masters of the earth. "Without humans, what is the meaning of the earth's survival?" Little do they know that humans are just passing through the vicissitudes of the earth. The earth will still turn without humans, but without the earth that nurtures life, humans may no longer exist. Geologists like to give names to different periods of the earth, such as the Permian and the Tertiary, and each period is divided into several epochs. The Paleocene and the Eocene belong to the Tertiary. At present, we are in the Holocene of the Quaternary. Considering the huge impact of human activities on the earth, Nobel Prize winner and German atmospheric chemist Paul Crutzen suggested calling the period we are experiencing the "Anthropocene."
As a unique species, human beings have created a civilization that is different from other creatures, which has greatly changed the appearance of human beings and the earth. Since modern times, after several industrial revolutions, human beings have undergone earth-shaking changes in their understanding of energy, materials and nature. Especially since the 21st century, with the emergence and popularization of new technologies such as the Internet, human technology, that is, human beings' ability to develop and control nature can be said to be changing with each passing day. When people see the tremendous power generated by human civilization, they inevitably have the idea that "human beings are the spirits of all things", so now many people believe that our human civilization has been highly developed, so developed that it can even dominate the earth. However, seemingly developed human civilization is so fragile when facing many problems. To give a small example, every spring and autumn, many areas will have an outbreak of influenza, and this small influenza will take the lives of many people. For another example, people have now achieved artificial rainfall, but this achievement is so small when facing nature. In many myths and legends or games, there is a spell called weather control, which is a spell that can adjust the weather at will. This may be too demanding, so let's lower the requirements, that is, artificially create sunny days in rainy weather. Even with such requirements, it is obviously impossible for human technology to do it at present. A celebrity once said: "Only when the tide recedes, you can know who is swimming naked." When humans brazenly clamor to dominate the earth, but facing the greenhouse effect of the earth, human response measures are very slow. As a geologist said: "The earth does not need human beings to save it, because in geological history, the temperature of the earth has been more than ten degrees higher than it is now, so it is human beings who need to save themselves, not the earth."
If humans do not take action on the issue of greenhouse effect, then when the temperature rises by more than ten degrees, it will be clear who is the dominant force.
Humans seem to take it for granted that they are the children of destiny, as if nothing can stop them, but what is the reality?
Can humans really dominate everything?
Of course not. In fact, in front of nature, human beings are not worth mentioning at all!
Everyone knows that super missiles are powerful and destructive, but have you heard of natural bombs? Located near the Tunguska River in Siberia, Russia, it was once subjected to a "natural bombing". On June 1908, 6, there was a sudden loud noise near the Tunguska River. Most people thought that the military was testing bombs again, but according to some witnesses, before the explosion, they saw something like a fireball across the sky, and then heard an explosion. Russia immediately sent people to investigate. After arriving, everyone was shocked. Nearly 30 kilometers of coniferous forests were razed to the ground. Could it be that there was really a missile attack? After a long investigation, it was determined that the explosion was not caused by humans, but a natural explosion. The cause of the explosion is unknown. Some people speculate that it may be related to the impact of an asteroid on the earth. According to the test results, the energy of this explosion is comparable to the power of the "King of Bombs". If such an explosion occurs in the center of the city, the consequences will be disastrous.
In July 1987, Bangladesh also suffered a severe flood. In July, Bangladesh experienced very strange weather, with heavy rains every day. It seemed as if a large amount of lake water poured into Bangladesh every day, and the strong winds and heavy rains constantly impacted Bangladesh's fragile drainage system.
In less than two days, the heavy rain had already caused waterlogging, but the rain showed no sign of stopping. In two months, as many as 47 counties in Bangladesh were hit by heavy rain, and more than 2000 people were killed. However, this was not the most terrifying thing. The terrifying thing was that as many as 2.5 livestock died because of the flood, and 200 million tons of grain were destroyed by the flood. 700 kilometers of roads and more than bridges were vulnerable to the flood and were all destroyed. The damage to houses and crops was countless. According to statistics, about three-quarters of the country was hit by floods, which shows how terrible it was.
What is your impression of tornadoes? Most of them are probably the video of Afu destroying a parking lot and the video of a foreign guy chasing a tornado.
It seems that tornadoes do not cause any major harm, but in fact, tornadoes are one of the most destructive natural disasters. The United States is a famous tornado-prone country. In 2011, a very destructive tornado appeared in the United States, with a speed of 320 kilometers per hour. This meant that at the time, it was almost impossible to stop a tornado by human means alone. People could only watch the tornado rage, and people who were attacked by a tornado often had only a few seconds to escape. The tornado not only destroyed most farms and houses, but also destroyed many parking lots and cars. It was simply the real version of "a tornado destroyed a parking lot."
In addition to the United States, Chile is also a country where natural disasters frequently occur. Due to its geographical location, natural disasters such as earthquakes and tsunamis will occasionally come out to tease Chile. However, in May 1960, an earthquake brought incalculable losses to Chile.
More than 2 people were killed in the earthquake alone, but the disaster caused by the earthquake was only the first blow. After the earthquake stopped, people found that part of the seabed was exposed. People who often go to the seaside know that this is not a good thing, and there must be a tsunami. Sure enough, just fifteen minutes later, a 8-meter-high wave pounced on the coastal cities of Chile like a beast. In an instant, buildings were destroyed and people were swallowed up, causing economic losses of up to million US dollars. This is the famous Chilean tsunami.
Wait, wait, wait, there are many natural disasters like this, but it seems that they are all just a gust of wind, and they are gone when they are gone.
I didn't think there was anything wrong with it at all.
I never realized how insignificant I am compared to nature.
This is true even for humans in this world.
After all, humans now have their eyes on the universe... Aliens really exist, and they have fought a war with humans, which makes countless people very excited! After all, humans have been arguing about whether there are other civilizations in the universe. Many voices are claiming that life on Earth is a miracle of the universe, and humans are a miracle among miracles. This kind of sitting in the well and looking at the sky is still very popular. After all, humans have not been able to discover other life for many years, and now they know that it is not that there is no other life or other civilization, but that it exists purely because the technology of the earthlings is not good enough, which is a bit broken.
But then comes the frenzy!
Since there are other civilizations in the deep space of the universe, and even these civilizations have developed interstellar travel, then does that mean that humans... For a moment, everyone began to look into the deep space of the universe, as if the earth had been left behind.
Then today the earth moved.
All of a sudden, everyone on earth became obedient.
But that’s not all. Someone soon discovered through satellites that a giant mountain several thousand meters high suddenly appeared in the center of the Pacific Ocean. Uh... not accurate, it should be two mountains!
The key point is, one looks like a palm and the other looks like a head!
It looks like it was man-made, but the problem is that given the current level of human technology, it is impossible to complete such a project in a short period of time!
After all, that head alone is several thousand meters high (how high it is, there is no accurate data yet, after all, everyone is just predicting based on satellite images). You should know that the rock surface of Mount Everest is 8844.43 meters high, and the snow surface is 8848.86 meters high! The current estimate of the head is more than meters!
Higher than Mount Everest!
There are currently ten tallest buildings in the world, with the Burj Khalifa in Dubai ranking first at 828 meters.
Although this is not the limit of human construction, it is difficult for humans to build buildings far exceeding this height.
Although it seems simple to build a house, in fact, the difficulty of building a building increases exponentially as the height increases. This is because the increase in the vertical height of a high-rise building will have a great impact on construction technology, materials, and structural design, mainly including the following aspects:
Structural frame: When many high-rise buildings are being built, you can find that there is a location in the center where the construction speed is significantly higher than the surrounding area. This is the layout of the building's structural frame. There are inner core type, a central core tube layout, or outer core type: a double-sided outer core tube layout, and multi-core type: multiple dispersed outer core layouts, etc. These structures will be flexibly selected depending on the height and scale of the building.
Material compressive strength: As buildings get taller, the compressive strength requirements for cement under heavy pressure will be extremely high. For example, during the construction of the Shanghai Tower in the documentary Super Project, there was a concrete compressive strength test. If the design pressure is not met, then the service life may be shortened or major quality accidents may occur during future use, such as shear cracks and other serious accidents.
Impact of earthquakes and crosswinds: These are uncontrollable factors, but they can be partially or fully offset through active seismic damping, such as the Smart Eye system of the Shanghai Tower. These are all active seismic protection technologies. All high-rise buildings have main seismic structures and seismic protection measures between floors.
After so many words in the above article, I believe many friends will raise a question. If we don't need these supporting facilities, and just pile up a big pile of earth, how high can humans pile up the "earth pile"? From a general understanding, the height of this big pile of earth seems to be unlimited, just pile it up, but in fact it will be affected by many factors, such as the compressive strength of the soil. If a high-strength isolation frame is not designed in the middle, the mountain may cause landslides or mudslides. Therefore, it must also have a reinforced concrete frame, and then pile it up higher!
The highest planetary engine in "The Wandering Earth" is about 11 kilometers high. In fact, this height is far from enough, because the nozzle is still inside the earth's atmosphere, which will take away a lot of air! But it can't be built higher. Not only will its own weight crush itself, for example, a 3-meter-high mountain will be under a pressure of 16 tons per square centimeter! The high temperature generated will also reduce the heat strength of the steel!
Is there no limit if we use ultra-high-strength materials? In fact, not at all. This has something to do with the structure of the earth! The earth is made up of the inner core, mantle, and crust from the inside to the outside. The entire structure is like an egg, and the crust is a thin layer floating on the magma layer inside the earth! Therefore, after solving various technical problems, there is still an insurmountable problem in building a building on this eggshell, and that is the strength of the crust!
Therefore, it is very likely that mountains on Earth will be over 12 kilometers high. It is said that Mount Everest once reached a height of 12 kilometers, but later it collapsed under its own weight and reached its current height (the gravity on Mars is much smaller than that on Earth, so the highest volcano on Mars can reach 21 kilometers)!
Now, suddenly there appears an object that is over nine thousand meters, or even ten thousand meters in size, and looks like a man-made object. How can people not pay attention to it?
Of course, the people closest to the two mountains have no interest in this.
Because they are saying goodbye.
To be honest, Mordo and Kai really didn't expect that they would actually see Ancient One in the end.
After all, they all thought the earth was going to end!
"Teacher..." Modu cried like a child.
Today's Mordo is definitely out of control. In the past, Mordo always gave people a tense feeling, and his face was always expressionless. He learned everything from Ancient One, but he didn't learn it like Ancient One.
Ancient One doesn't actually have much expression most of the time.
But the feeling she gives people is deep and gentle, as unfathomable as the sea.
And Mordo always gives people a serious...even harsh feeling.
Until today, Mordo's defense was broken.
First there was anger, then laughter, and now there are tears.
Ancient One looked at Mordo with a smile, just like when she first saw Mordo many years ago, gentle like an elder.