Looking at the billowing mushroom cloud in the distance.
Xu Yun's mind was almost empty, with only one thought floating repeatedly:
"It's so beautiful..."
This was the first time he witnessed a nuclear explosion with his own eyes. It is no exaggeration to say that this was the most spectacular "scenery" he had ever seen in his life.
Looking from afar.
The initial height of the mushroom cloud is about two to three thousand meters, towering into the clouds, as if it is about to break through the sky.
And...this is far from the final state of the mushroom cloud.
As we all know.
In fluid mechanics, the essence of this mushroom cloud is actually a Vortex Ring, which is a vortex ring or annular vortex.
It often occurs in turbulent regions of a liquid or gas flow field, where viscous friction at the interface between the two fluids slows down the velocity of A's outer layer relative to its core.
These outer layers then slide around A and gather behind it. The central mass continues to advance and the outer layers are "locked" within the ring, and the end result is poleward flow in A, evolving into a vortex ring.
The forward speed of the vortex ring is about half of the forward speed of the core mass, so the mushroom cloud in the actual nuclear explosion process will not reach its highest height until about thirty minutes after the explosion. The mushroom cloud in many image data is not at the moment of explosion.
Recorded footage.
Xu Yun just stared at the mushroom cloud in the distance, watching it getting higher and higher...
Suddenly.
A passage from a certain poem came to his mind again:
[Silver snakes dancing in the mountains, wax figures riding in the mountains, trying to compete with God...]
By the way...
The word "original" in this sentence refers to the plateau, but it seems appropriate to translate it into atomic bomb at the moment, ahem...
At this moment.
Xu Yun was far from the only one who was shocked by the atomic bomb.
The moment the mushroom cloud appeared.
The comrades at the scene who were originally counting down the countdown instantly jumped up from the ground as if they were bounced by springs, and burst into cheers comparable to a nuclear explosion:
"Mushroom cloud, look! Mushroom cloud!!!"
"Ahhhhhh!!! Nuclear explosion!!! The nuclear explosion was successful!!!"
"Long live the motherland! Long live the people!!!"
These nuclear industry workers of different genders and ages were jumping up and down on the hillside as if they were crazy. Many of them were shouting words with unclear meanings. Regardless of whether they had recognized them before, they would go up and hug someone when they saw them.
They were in a ball, with tears shining brightly in the sun, and various hats and sunglasses rising and falling in the air. Almost no one could remain calm.
They have waited too long for this day and sacrificed too much.
They cut off their close friends and relatives, gave up their promising futures, and gathered from all over the world and even across the ocean to the western frontier of China. They went out to wash their faces in the wind and sand, returned home and their clothes were stained with ice and snow. They were so hungry that they became swollen and even vomited blood so many times just to hear this sound.
The dragon's roar that resounds throughout the world?
We insist on having what the enemy does not allow us to have. Whatever the enemy is afraid of, we will develop!
Starting today...the history of China will be officially divided into two parts to be written!
Suddenly.
Xu Yun felt a huge grip on his shoulders. He turned his head subconsciously and found that Lao Guo still stubbornly pursed his lips and made no sound, but his thin face was already full of tears...
Suddenly.
Tick tock, tick tock...
Xu Yun suddenly felt a little coolness on his face. He subconsciously stretched out his hand and felt a faint moist feeling at his fingertips.
This is.....
water?
Then he suddenly realized something and looked up at the sky.
I saw that the sky at this time was still as bright and cloudless as before, but there was light rain falling gently.
Xu Yun lowered his head and stared at the water stains on his fingertips for a few seconds, his expression thoughtful:
"The rain of national destiny..."
This is the third time he has been exposed to the rain of the National Games. The first time was after the end of Lao Su's copy. At that time, the system rewarded the National Games 1. At the same time, it started to rain lightly outside.
During that light rain, many subtle changes occurred throughout China, some of which even directly affected Xu Yun himself.
The second rain occurred during the dark matter press conference. At that time, China's network security faced the turret across the sea. During the decisive battle between the two sides with bayonets, light rain fell from the sky.
The current nuclear explosion is the third time Xu Yun has seen the fate of the country rain.
When Xu Yun first came into contact with the Rain of National Destiny, he thought that National Destiny was a simple reward. It was the National Destiny that came first, and then many subsequent achievements.
But he didn't understand until the Academy of Sciences press conference...
The national luck rewarded by the halo is certainly important, but more often than not it is the icing on the cake.
The third rain now gave him a new understanding.
There is no so-called savior in this world. It is always the people who truly determine the rise and fall of a country or a nation. As long as the will of the nation is still there, the national destiny will be on their side.
When you look back at something many years later, it seems that it is the blessing of the country, but in fact the protagonists in creating this miracle are always the people.
On the contrary, if a country or a nation does not even have the courage to stand up, then naturally there will be no national destiny to speak of.
"Comrade Youlai, Comrade Guangda."
Just when Xu Yun was slightly lost in thought, the writer on the side also spoke up:
"Two comrades, you are experts in nuclear weapons. I have a question to confirm - was our atomic bomb test explosion successful? Is this a real nuclear explosion?"
As one of the big rabbits in the country, although the writer was equally excited at this time, he still remained sufficiently clear-headed.
As a non-professional, he had to first determine whether the power met the standards of a nuclear explosion - after all, the detonating explosive used this time was CL20.
When Lao Guo heard this, he also came back to his senses. He turned his head and wiped the corners of his eyes calmly:
"Chief, based on the current formation speed of the mushroom cloud and the previous earthquakes felt on the ground, I can guarantee that this atomic bomb test explosion was successful."
This chapter is not over, please click on the next page to continue reading! "And a simple visual inspection based on the logic of dimensional analysis... The material utilization rate of this nuclear explosion will never be low."
Lu Guangda on the side quickly nodded.
Mushroom cloud is a typical phenomenon of nuclear explosions. No matter how powerful the CL20 explosive is, it is impossible to erupt such a huge mushroom cloud under the limited preset magnitude.
At the same time, according to G.I. Taylor's idea of dimensional analysis back then, it is assumed that the radius R of the spherical shock wave of a point source explosion depends only on the time t after the explosion, the energy E released at the moment of the explosion, the dimensionless constant C and the air density p. Ultimately, this complex problem
It can be simplified to be described by only 5 parameters.
At present, Lu Guangda and others do not have the conditions for written calculations, so it is difficult to accurately calculate the data. However, based on visual inspection and simple mental calculations, they can roughly judge the power range of the atomic bomb.
If nothing unexpected happens.
This time the material utilization rate of the atomic bomb can probably reach 17% or 18%, and there is no chance that it will even exceed 20%.
To know.
The percentage of little boys back then was only 12%, and the percentage of fat people was only 7%. (Since we mentioned little boys and fat people, you can search for Yamaguchi Jiang, it is very interesting...)
"..."
After hearing Lao Guo's answer, the writer quickly nodded:
"Very good. In that case, Comrade Youlai and Comrade Guangda, just follow the plan for the rest of the process. I'm sorry to bother you."
Lao Guo and Lu Guangda suddenly looked serious:
"Guaranteed to complete the mission!"
The "remaining link" mentioned by the writer is the collection of explosion parameters related to the atomic bomb. This task is not technically difficult, as long as you bring the collection equipment to collect various things, but it is risky from a safety perspective.
great.
After all...that's the center of a nuclear explosion.
The writer explained some safety issues to Lao Guo and the two parties, and the two parties parted ways.
Seeing the retreating figures of Lao Guo and Lu Guangda, Xu Yun murmured a few times, but in the end he remained silent.
Upon seeing this, the writer patted Xu Yun's shoulder gently and said to him:
"Xiao Xu, how much time do you have?"
Xu Yun looked up at him and reported a number:
"46 minutes."
At this moment.
In Xu Yun's sight, there was a prompt flashing slightly:
[The mission has been completed, please choose to return within 60 minutes]
[Current countdown: 46 minutes and 24 seconds...]
This prompt appeared in front of Xu Yun at the same time as the mushroom cloud rose. The interface style was very familiar to Xu Yun. After all, he had seen it three times in previous dungeons.
This also means that the time Xu Yun can stay in the dungeon is only... 46 minutes.
"46 minutes..."
The writer also sighed after hearing this:
"Then let's go back to the tent first, report the situation to the capital, and then set off."
Xu Yun nodded again.
According to prior arrangements.
The writer will return to the capital immediately after reporting the situation, and the remaining big rabbits will first go to the border to wrap up Ah San's affairs - whether it is the domineering little old man or Xu Yun's family, they are all troops
The boss of the system is here...
Li Jue and several other senior personnel were responsible for the finishing work on the scene. The writer could receive the news almost simultaneously when he left Zhuzhou.
As for Xu Yun...
On the surface, he will return to the capital with the writer, and externally speaking, he will participate in the research and development of another higher-level project.
The codename of that project is Nuwa, 24 years old...wrong, 24 meters, it's a mecha.
This kind of distinction is very common in this era, and there are many comrades in the 221 project who were dispatched in this way.
At the same time, after all the Sanqings of the Taishang Project have been "transformed", a large number of comrades in the entire 221 base will be transferred to other projects incognito again, and the number of people will not even be less than 30% (referring to the scientific research personnel).
Therefore, Xu Yun's departure will not attract too much attention.
Some comrades even left a mailbox for Xu Yun and agreed to write to him when he arrived at his new unit.
Maybe when they reach the end of their lives decades later, they will think that they can't contact Xu Yun. In fact, it's because he has been participating in a certain project incognito...
This is a plan decided by Xu Yun and the organization after discussion. This kind of "disappearance" is a little gentler than death due to illness. Some letters sent to Xu Yun will be replied by the organization on Xu Yun's behalf.
In this way, for many people, Xu Yun will be in a situation where they don't know where he is but everything is fine, which is much better than burning paper money in front of a black and white portrait every Qingming Festival...
Maybe some people are working hard to improve their abilities in order to qualify to participate in that non-existent project, and maybe achieve higher achievements than themselves in the original history.
"Well...the experiment went well...it has been determined to be a nuclear explosion...ok..."
ten minutes later.
The writer hung up the communication with the capital, pondered for a moment, and said to Xu Yun:
"Xiao Xu, let's get ready to go."
Xu Yun took a deep breath:
"good."
The writer nodded, walked behind Xu Yun, and pushed his wheelchair out of the tent.
The entrance of the tent was facing the sun, and the light was a bit dazzling. Therefore, when he first came out of the tent, Xu Yun subconsciously squinted his eyes, and then opened his eyes again after a second or two.
However, the moment his vision recovered, Xu Yun's heart skipped a beat.
At this moment, the open space in front of the tent was filled with rows and rows of people!
Li Jue, Da Da, Wang Ganchang, Zhao Zhongyao, Zhu Guangya, young Wang Lao and Zhou Shaoping, young nurse Qiao Caihong and the hospital's chief physician Lin Yu...
There are also two conspicuous bags wearing white protective clothing. The names on them are Lao Guo and Lu Guangda. No wonder they left so decisively before...
This chapter is not finished yet, please click on the next page to continue reading the exciting content! There is also Xie Yu who is leading a donkey. This is the descendant of the old Su Zhong servant Xie Laodu Guan...
Xu Yun even saw the Qian Fifth Division that was supposed to be at the Jiuquan launch base... Did he rush over after the missile was successfully launched? That's more than 600 kilometers away...
After Xu Yun appeared.
Everyone was silent for a few seconds, and then...
Thunderous applause!
Everyone was applauding vigorously, including the writers behind Xu Yun. Young workers like Zhou Shaoping even blushed.
Different from the previous cheers to celebrate the nuclear explosion, this is... the applause for Xu Yun alone!
Xu Yun's vision suddenly became a little blurry.
How virtuous and capable I am to deserve this group of extremely lovely people to do this...
The applause lasted for a full minute and then gradually died down.
Then Li Jue walked up to Xu Yun and patted Xu Yun on the shoulder:
"Xiao Xu, everyone knew you were leaving, so they spontaneously came over to see you off."
"Your situation is special. You can't take anything with you, so I can only applaud you. Don't think we are shabby."
"You are lucky to come to our era from the future, and we are also lucky to meet you in this era. This may be the only thing that has happened to China since ancient times."
"Don't worry, we won't forget you, and don't forget our friends and comrades in factory 221."
Xu Yun nodded vigorously.
How dare he forget? How could he forget?
This group of ancestors who worked hard for China deserve to be remembered and admired by everyone!
"Okay, that's all I have to say."
At this time, Li Jue showed the stability and ease of a battlefield veteran:
"When you go back, take care of yourself. Don't stay up late every day like Lao Guo and others. If you write a biography, remember to portray me as a technical leader, and then...get out!"
After that, Li Jue gave Xu Yun a final pat on the shoulder, turned around and returned to the crowd without looking back.
The writer also held the back handle of Xu Yun’s wheelchair:
"Xiao Xu, let's go."
Xu Yun once again took a deep look at the people in front of him and waved to them vigorously:
"Comrades, thank you!! See you later!"
What Xu Yun responded to was a pair of hands raised high in the air and waving:
"Comrade Xiao Xu, goodbye!"
"Consultant Xu, take care of yourself!"
"Consultant Xu, remember to write a letter. Goodbye!"
"Xiao Xu, remember to drink donkey hair soup on time!!!"
"Ah uh - ah uh -"
More than ten minutes later.
Xu Yun and the writer sat in a jeep, while the writer's security guard was on duty outside the car.
"Chief."
After a while, Xu Yun suddenly said:
"The time is coming, I...have to leave."
The writer nodded slightly and asked:
"Should I get out of the car and avoid it?"
Xu Yun shook his head.
Since Halo did not judge the mission as a failure after the writer guessed his origin, there was no need to avoid it when the writer sent him away at this time - this can also be proved by the situation of Lao Su after he learned the truth in reality.
When the writer saw this, he did not delve into it, but touched his chin:
"Okay, then I'll give you a last ride."
"By the way, Xiao Xu, what you said before about going to the future..."
"Don't worry, I'll remember it."
Xu Yun smiled when he heard this and patted his chest:
"I will look for an opportunity to deal with it when I get back, but I can't guarantee what time it will be at your place."
"It may be the next second I leave, or it may be a few days or even a few months later, but it should not exceed four years."
There was a hint of curiosity in the writer's eyes:
"Why four years?"
Xu Yun shook his head without explaining too much:
"Ten seconds left."
The writer sat up straight.
"Nine seconds...eight seconds..."
"Five seconds...four seconds..."
"Three seconds..."
"Two seconds..."
"One second..."
At the last second, Xu Yun waved vigorously towards the writer:
"Chief, see you in the future!"
Swish——
The words just fell.
Xu Yun's whole person disappeared completely.
"..."
The writer looked at where Xu Yun was sitting in silence for a few seconds and murmured:
