In this world, there are many invisible dangers, you can't see them, but they can hurt your body, such as: sound, air, radiation.
When the sound is greater than 70 decibels, it will cause significant harm to our body, and the infrasound wave with a sound wave frequency of less than 20 hertz may resonate with our body, which is very harmful to the human body and may even lead to our death.
Air is one of the necessities of our survival, the oxygen we need in the human body is in it, but there are other gases in the air, the most common is the "smog" in our lives, it is composed of dust, sulfuric acid, nitric acid and other particulate matter, when we inhale them into the body, they will cause harm to our body, long-term in such an environment, serious will lead to death.
Compared with the first two, the most terrible thing is "radiation", its harm to humans is very considerable, and not only humans, animals are vulnerable in front of it, today we want to talk about the most serious nuclear power accident in history "Chernobyl accident".
<h1 class="pgc-h-arrow-right" data-track="5" > nuclear power plant</h1>
First of all, let me introduce what is called a "nuclear power plant", which refers to a facility that converts nuclear energy into electricity through appropriate devices. In today's stage of rapid industrial development, the use of electricity in each country is very large, and the annual growth of industrial output depends on how much electricity you can generate, if there is not enough electricity to support their development, the progress of a country will become very slow.
For example, China is a populous country, and everyone in our country uses only one kilowatt-hour of electricity to exceed the output of a Three Gorges hydropower station, which is the largest hydropower station in the world.
Therefore, without the construction of nuclear power plants, the development of the country will not have enough electricity to support their operation, and the use of nuclear energy to convert into electrical energy, although dangerous, but has an advantage that we cannot refuse:
First of all, there are several traditional power generation methods: solar energy into electricity, wind energy into kinetic energy, hydropower, the first two are not stable, if it is a cloudy day then this day can not create electricity, wind power generation is the same, and hydropower is greatly affected by resources, the three gorges unique geographical advantages are such a one, and if the rivers are blocked, then it will also cause harm to fish.
Therefore, compared with them, the advantages of nuclear power plants come out, the fuel cost of nuclear power generation is low, it is not easily affected by the international economic situation, and it is more stable than other power generation methods.
In addition, they are carbon-free and do not add pressure to the "greenhouse effect" to us.
But also its shortcomings are also we can not resist, the reactor in the nuclear power plant has a large number of radioactive materials, if the improper operation of them to leak, will cause a very serious environmental pollution, and will greatly endanger human health.
<h1 class="pgc-h-arrow-right" data-track="13" > Chernobyl</h1>
On April 26, 1986, reactor No. 4 at the Chernobyl nuclear power plant in Ukraine exploded, causing a series of explosions that caused a fire and sent large amounts of high-energy radioactive material into the atmosphere, releasing a dose of radiation that was 400 times higher than the atomic bomb that had once exploded in Hiroshima.
This is not the most terrible thing, when the energy generated by the explosion breaks through the entire building, the condensate in the pipe begins to flow backwards, they are evaporated after causing a second explosion, the firefighters do not know what this explosion means, they rush to fight the fire, and waiting for them is not only the fire but also the radiation of ultra-high energy.
At this time, there was still a lot of nuclear fuel burning, and their heat melted the core of the pile, devouring everything encountered on the road, and eventually forming an "elephant foot" in the pipeline.
<h1 class="pgc-h-arrow-right" data-track="17" > radiation hazards to humans</h1>
Here we also have to talk about the harm of radiation to human beings, in fact, radiation can be seen everywhere in our lives, such as computers, mobile phones, and even light, but the radiation carried by these items is small, computers, mobile phones will damage the human eye, and light will not affect us.
But in hospitals, the radiation we make such as "X-rays" or "CT", which is called "ionizing radiation", is more harmful to the human body.
They will promote the cancer of cells in the human body, make the body's hormone secretion abnormal, make calcium ions lose, and so on.
They will also attack the chromosomes in human cells, the degree of this attack is very serious, will cause our chromosomes to be distorted, at this time there will be two situations: first, the cells die in large numbers, the second is that the cells survive, but the internal chromosomes are seriously distorted, they will no longer have the ability to move forward, can not divide normally, increase in value, which leads to our body organs will be completely destroyed little by little.
<h1 class="pgc-h-arrow-right" data-track="22" > elephant foot rekindle? </h1>
The radiation contained in this "elephant foot" is self-evident, but it cannot be allowed to continue to penetrate with high heat, once it penetrates into the underground water vein, then the water pollution caused will cause many people to die.
So an urgent rescue team was sent to solve this problem, and we can imagine the end of this rescue team, but their efforts are extremely important, and they brought back two important messages: "elephant feet" have cooled; elephant feet have not penetrated into the underground water veins.
This is because after the explosion, more than 400 coal workers rushed to the rescue, and they built a cooling layer under the elephant's foot against the high temperature and high radiation, which cooled the elephant's foot and did not continue to penetrate.
However, there was such a picture.
This photo has aroused the discussion of the majority of netizens, and some people have said: Is it the rekindling of elephant feet?
In 1996, the Elephant Foot welcomed his "visitor" Artur Konev, a Kazakh radiation expert.
In order to ensure safety, he went into the depths of the sarcophagus and found the elephant's feet for study and evaluation, but after this, Konev's name never appeared again.
When the picture came out, someone approached Konev to inquire about the situation, to which Konev replied that he survived because the elephant's feet had cooled and the radiation was not so high.
This photo was also taken at that time, but we can also know that the heat of the "elephant foot" is still hotter than other objects in the environment, and it has not completely cooled down.
< h1 class="pgc-h-arrow-right" data-track="32" > conclusion</h1>
Elephant feet have not rekindled, but it does not mean that it is no longer dangerous, and the Chernobyl incident is a wake-up call for the whole world, and development must be carried out on the basis of safety and rigor.
These people who dare to explore Chernobyl and dare to rescue, they enter the high-radiation environment for data, for safety, regardless of safety, they are brave, but they hope that the brave people in the future development can not have to pay their lives for development