Academician Ding continued: "There is no 'hardship' and 'discipline' in my dictionary, only 'interest' and 'sense of achievement'. So, I don't limit your working hours per day and the number of days you work week, the pressure and motivation to study comes from your own inner drive...... If you have any questions, you can ask me directly, or you can ask your brother. ”

After a pause, he asked, "By the way, what kind of research do you want to do?" The space industry is just a big specialty, and there are many subdivisions in it. You want to learn everything, you can't learn it. ”

Zhang Yuan thought seriously for a while, and was a little dazed for a while, he was quite interested in every direction.

While he was thinking, Senior Brother Zhao suddenly said: "If you don't have a particularly complete understanding of the entire space industry, you can see and see the spacecraft first, and then consider the direction." There's always nothing wrong with laying the groundwork. ”

"Moreover, the current conditions in the laboratory are so poor that there are few resources. There is a queue for any one experiment. I still recommend learning more basics, unless you have a particularly good idea, then you can do a project, you can also do some realistic experiments on the computer, I can help you with that......"

Gravity is now a centrifugal simulation, and for some of the more delicate experiments, any bit of Coriolis force is a nightmare.

Academician Ding nodded, "That's right. Zhao Qingfeng, when you have time, you take him to the gravity-free area outside. Well...... Simply intern in the fusion engine room for a while. ”

"The fusion engine is by far the most complex piece of engineering. If you figure out the whole workflow, you can basically graduate. ”

Zhang Yuan's heart moved, and he ran to the gravity-free zone outside to intern, he must be willing.

Earth Age's nuclear fusion engine is at the cutting edge.

"That's right." Academician Ding also said: "If you want to officially graduate, you must publish at least an article in a journal of the first region of the earth. The current paper evaluation system of our new civilization has not yet been established, so it can only be calculated according to the earth, or generally recognized by experts in the industry. ”

All it takes is a paper......

As if seeing Zhang Yuan's question, Academician Ding said with a smile: "Don't think it's very simple, if it weren't for the poor laboratory conditions here, my requirements would be higher." ”

Zhang Yuan had a whim, and suddenly had a question: "What if I can't send a paper all the time?" ”

Academician Ding laughed: "Either apply for withdrawal, or postpone graduation all the time, and be the first batch of people who die on the starry sky!" ”

……

Academician Ding is actually very busy.

Although the "Earth Era" has been tested for a long time, there are still many small problems exposed during the entire voyage, and some things need to be adjusted temporarily, so these bigwigs can't see a single figure all day long.

In the following time, Zhang Yuan and his senior brother Zhao Qingfeng had more contact.

Zhao Qingfeng is an eighteenth-level job, responsible for the maintenance of the material circulation system, and he is actually very busy, but the level of busyness is definitely lower than that of Academician Ding, at least he can see it every day.

"I see, the level of work is directly proportional to the level of busyness. My original second-level position was a sweeper. You can be absent from work at will, but you can't do this. ”

Zhao Qingfeng said with a smile: "No, I don't need to be in charge of it all day and night here." It's just that it's the early stage of sailing, and there are a little more temporary adjustments. ”

"Let's go, I'll take you out and have a look!"

Personnel with a job level of less than 10 who want to leave the living quarters must report to their superiors and be accompanied by other people.

"Verified to pass, please pay attention to safety!"

One of the nurses suddenly smiled and said, "Mr. Zhang Yuan, please don't go out for more than 10 hours each time." Otherwise, there is too much calcium loss and it is easy to osteoporosis. You can go to the hospital and buy a little calcium tablets. ”

"Okay, thanks for the reminder."

Another nurse laughed and said, "Wang Shuo, why are you so good at service today?" Do you like him very much? ”

"Where? I'm already fine......"

Zhang Yuan's scalp was numb, and he hurriedly slipped away.

The two put on their spacesuits and walked up to the elevator.

The elevator rose slowly, and as the linear speed decreased, the "gravity" Zhang Yuan felt became smaller and smaller. At the same time, there is a feeling of dizziness standing in the "drum" of the washing machine.

Finally, when the elevator reached the center of the ship, all the vertigo disappeared, and the two were completely weightless.

The two "swim" into a rail car with both hands and go to the air pressure gate.

There were several soldiers guarding these air pressure doors, and when they saw Zhang Yuan and the two, after checking their identities, they saluted.

"Drop~ Please stay safe!"

Further beyond is the vacuum zone.

The rail car slowly moves along the central axis to the first air gate.

Phew! There was a gasping sound.

After the air in this small room was cleared, I went to the second air pressure door.

The whole pumping process took a total of 3 times before the car successfully reached the vacuum zone outside.

The most precious thing in the universe is matter. Humans do not have the ability to create a complete vacuum, so it is inevitable that a small amount of matter will be lost every time they enter and exit.

However, as long as the lost substance is within the acceptable range.

Along the way, Zhao Qingfeng kept introducing the facilities and equipment of various gravity-free areas.

"Do you know why there's no air in the gravity-free zone?"

Zhang Yuan thought for a while: "The main thing is to reduce the mass of the spaceship. ”

Senior Brother Zhao nodded: "That's right, although the air density is low, it is a remarkable number overall...... If the mass of the spacecraft is up to several billion tons, it is impossible to accelerate to seven thousandths of the speed of light. If you think about it, the mass of our 500,000 people adds up to only 30,000 tons, which is many orders of magnitude. ”

The interior of the cabin was empty and glowing dimly. Senior Brother Zhao's finger pointed out the window, "As for those complicated pipes, they are actually spaceship heat dissipation devices, and the heat generated in the living quarters is brought to the outside through these condensation devices, and then circulated through the radiant sails on the surface of the spaceship. ”

Don't look at the average temperature of space is more than minus 200 degrees, but there is no material exchange, and the heat dissipation is ridiculously slow, and the heat can only be dissipated by radiation.

As an important part of the ecosystem, heat dissipation can be said to be the top priority of the ship.

Senior Brother Zhao said slowly: "Actually, with the current carrying capacity of our spaceship, it is not enough to carry 500,000 people. ”

Zhang Yuan was stunned in his heart, they have 500,000 people, don't they live well?