It's reasonable for me to have a two-way foil for a second-level civilization, right?

Lu Yongchang, who was sitting behind the desk, twitched his mouth slightly, raised his head, looked at Fang Xu in front of him with complicated eyes, then shook his head slowly, and sighed.

Fang Xu looked surprised.

The tone became more humble.

"Yongchang... Is there a big problem with the design plan?" Fang Xu walked forward with some guilt, and stretched his neck hard to look at the holographic drawing in front of Lu Yongchang, "Impossible, zero checks have been done many times..."

Looking at Fang Xu's cautious appearance, Lu Yongchang couldn't help but raise the corner of his mouth: "I didn't say there was a problem with the drawing, why are you so careful?"

Fang Xu: "...???"

"No, the drawings are fine. Why did you stop the project?!" Fang Xu straightened up immediately when he heard that there was no problem with the design plan.

Lu Yongchang looked at Fang Xu with a half-smile, and said softly: "I think there is another device to be added."

Fang Xu: "..."

……

Lu Yongchang stretched out his hand across the air, and the holographic image was enlarged accordingly. Zero also completed the 3D modeling of Guangwei at the same time.

On the holographic model, ultra-high-power land-based Type III laser cannons can be seen everywhere.

This is just the most basic weaponry on this satellite.

Plasma missile silo, high-power plasma cannon, planet-level magnetic field shield...

It is no exaggeration to say that this transformation plan abruptly turned this natural satellite into a super weapon with a diameter of 6186.98km.

The only flaw is that this all-round supermodel super weapon cannot move arbitrarily - it can only orbit around the dawn star in its own orbit.

"pity……"

Lu Yongchang looked at the 3D model of Guangwei Fortress in the holographic projection, and a look of regret flashed in his eyes: "It can only be used to fight against civilizations below level four."

The corner of Fang Xu's mouth twitched slightly.

You listen, do people say anything?

What does it mean to only fight against civilizations within level [-]?

"This thing... Even if the fourth-level civilization comes, it won't get much benefit, right?" Fang Xu complained in a low voice.

"No, no, no." Lu Yongchang shook his head solemnly, and repeatedly denied, "The gap between the fourth-level civilization and the third-level civilization is beyond your imagination."

"The gap between the two is even bigger than the gap between the first-level civilization and the third-level civilization!"

"I suspect that it can't even resist an ordinary starship in a fourth-level civilization!"

"Is it so exaggerated..." Fang Xu's eyes were full of astonishment, and he asked in an incredible tone, "The weapons deployed on Guangwei [-] can destroy our asteroid-class flagship [Earth] within ten seconds. Couldn't this resist an ordinary starship of a fourth-level civilization?"

Lu Yongchang did not speak, but turned his gaze to the long ring-shaped "pipe" in the equatorial region of Guangwei.

Fang Xu noticed his gaze.

"A particle accelerator?"

"That's why you stopped the project?"

In the holographic model, this particle accelerator occupies the most precious equatorial region of the Moon.

"It's too wasteful." Fang Xu frowned, "We obviously have several particle accelerators, why did we spend so much resources to build this... big guy?"

"In order to study antimatter." Lu Yongchang took a deep breath, then exhaled a long breath, and said bluntly, "Human beings should also prepare for entering the fourth-level civilization."

"Antimatter is the key technology to enter the fourth-level civilization."

Hearing this, the expression on Fang Xu's face gradually became serious: "You mean..."

"Level [-] civilization, may use antimatter as energy source?"

Antimatter is the antistate of normal matter.

For example, anti-electrons, also known as positrons, have the same mass as electrons but carry a positive charge.

Another example is the antiproton, which has the same mass and spin as the proton, and has the same lifespan, but it has a negative charge.

As for the antineutron, although it has no electric charge, its magnetic moment is opposite to that of the neutron.

And these antimatters, when in contact with positive matter, will annihilate and cancel each other, and release extremely huge energy.

This energy far exceeds the energy produced by nuclear fusion!

Facing Fang Xu's question, Lu Yongchang did not hesitate, and said in a positive tone: "Not bad!"

"The fusion energy gain of heavy nuclear fusion is too small to be considered."

"And light nuclear fusion..."

"From the first level civilization to the third level civilization, we have basically exhausted the potential of light nuclear fusion."

"Do you still remember the flagship of the Lator civilization?" Lu Yongchang cast his eyes to infinity, with a faint expectation in the depths of his eyes, "It can manipulate gravity, and even enter curvature navigation..."

"The energy required for this is definitely not what a small nuclear fusion can provide."

Fang Xu turned his head to look at the holographic image thoughtfully.

"But... what about storage?" Fang Xu frowned, "Humans have done a lot of research on antimatter as early as the Earth era."

"But because of preservation issues, research progress is not optimistic."

"The preservation of anti-electrons and anti-protons may be relatively simple."

"It only needs to be confined with a magnetic field in a vacuum environment."

"For the current human civilization, it is easy."

"But... what about the antihydrogen atom?"

Fang Xu looked at Lu Yongchang in front of him suspiciously: "Since we are studying antimatter, we must solve the problem of preserving antihydrogen atoms."

ps: Regarding the first two chapters, Lin Shuguang went to the parliament for an interview. There are also basic positions in the parliament, and Xu Ting is doing the most basic positions.

pps: Thank you Jiu Liyi for your certification!

Chapter 504 Atomic Magnetic Moments and Particle Traps

Facing Fang Xu's question, Lu Yongchang stood up from his seat unhurriedly, waved his hand, and opened another holographic image.

"I already have some ideas about the storage measures of antihydrogen atoms."

"Particle trap device."

Lu Yongchang pointed to the holographic image beside him, and introduced in a relaxed tone: "This is the name I gave it."

"Particle trap?" Fang Xu frowned, looking at the familiar yet somewhat unfamiliar device in the holographic image, and subconsciously asked, "Magnetic field constraint?"

"Antihydrogen atoms have no charge."

Lu Yongchang chuckled: "It is indeed magnetic field constraints."

"But, who said magnetic fields can only confine charged particles?"

As the second in command of the Academy of Sciences, when Fang Xu heard these words, a plan had already appeared in his mind.

There was some surprise in his eyes, and he said with some hesitation: "You mean..."

"Atomic magnetic moment?"

The atomic magnetic moment is the effective part of the sum of various magnetic moments inside the atom.

Its sources are mainly divided into two aspects.

The orbital motion of the electron around the nucleus and the spin of the electron.

Hearing Fang Xu's hesitant tone, the smile on Lu Yongchang's face grew stronger.

He responded with a positive tone: "Yes, it is the atomic magnetic moment."

"In the age of the earth, it is an extremely difficult task to confine electrically neutral atoms by means of the magnetic moment generated when the atoms rotate."

"But now, our technology for manipulating the magnetic field is becoming more and more sophisticated, and under zero control, it is sufficient to complete the corresponding capture and constraint tasks."

While speaking, he swiped the holographic image in front of him.

The projection screen quickly turned to an angle.

The whole picture of the device appeared in front of Fang Xu.

The whole device is like a long pipe.

Around the tube, it is wrapped with layers of superconducting magnets.

These superconducting magnets, under the control of zero, will form an extremely complex magnetic field in the vacuum inner cavity of the tube.

When the antihydrogen atom passes through the inner cavity, the magnetic moment generated by its own rotation will interact with the magnetic field.

In this way, the magnetic field will firmly bind it to the central area of ​​the vacuum cavity.

As long as it is not in contact with any matter, the annihilation phenomenon will naturally not occur.

Human beings also have the opportunity to observe the anti-matter.

On the side of the equipment blueprint, a slowly fluctuating curve gradually appeared.

Schematic diagram of the magnetic field used to extract antimatter atoms

"This is the internal magnetic field curve calculated by Zero." Lu Yongchang shrugged, "It is only a theoretical thing at present."

"Everything, we have to wait for the big guy on Guangwei to finish."

Fang Xu looked at the slowly fluctuating curve in front of him, and took a deep breath.

It was that familiar feeling again.

Since the earth age, as long as he stands beside Lu Yongchang, he feels like a "waste" every moment.

He let out a breath of foul air slowly, and quickly let go of the sense of urgency flashing in his heart.

He is already different from the Earth era.

He pondered for a moment, and spoke clearly, word by word.

"Okay, listen to you."

"If you have any other arrangements, let me know together."

The saying goes well.

If you can't beat it, just join.

……

Time flies, 30 years later.

The earth calendar is 2450 years.

In the blink of an eye, it has been thirty years since the first batch of public raisers completed the [adult ceremony] and entered the surface city of Dawn Star to start work.

During the past 30 years, the three space fostering centers have raised a certain number of public foster children every year.

However, under the precise control of the Zero-sum Academy of Sciences, the number of public-raised people born each year is basically the same as the number of deaths from the People's Federation.

Therefore, although the number of natural births is still declining year by year, the total population on Dawn Star still maintains a steady growth.

The proportion of public supporters has gradually increased over the past 30 years.

Gradually, public supporters became a unique group in society.

On the one hand, the surface environment of Dawn Star has not been completely transformed, and human beings can only live in the only six remaining surface cities.

After all, the space in the city is limited.

With the passage of time and the continuous injection of fresh blood, the city that was originally empty has gradually become full.

Not to mention crowded, but the number of people walking on the city streets has increased significantly.

Therefore, the competition within the city has become relatively fierce.

The group of public supporters who invest in educational resources in a targeted manner has an inherent advantage.

But fortunately, there is zero control, absolutely fair, open and transparent promotion channels, and the competition in the city has been in a virtuous circle.

on the other hand.

Compared with natural people, because of the education and personal experience they have received since childhood, public care people are more inclined to artificial uterus and social generation support system in terms of fertility concept.

Public fosters who are of the right age and who are married will often apply for a quota, and leave their children with the help of artificial wombs and the social surrogacy system.