Stability maintenance team.

The turmoil in the group did not subside because of the death of Eddie's father and son, after all, Eddie's father and son are only one of the people in charge, and it does not mean that the stability maintenance team is all of them, and now it is ...... However, with the arrival of His Royal Highness the Third Prince's henchman Yabo, the stability maintenance team is operating at a high speed, and it seems that there is a big move ready to go.

"Mr. Yabo, this is information and contacts regarding the investigation before Team Eddie's killing. ”

Andrei, another leader of the group, handed the information to Yabo.

It's been a few months since Add's father and son died, but in the intervening months they've not disappeared for nothing, but they've just gone in a different direction.

"At present, the people who are the most active in Char are the Aurora and the Red Flame people, and in addition...... The people of the Radiant Empire still don't give up and stir up trouble among Char......"

Yabo looked at the information and looked a little indifferent.

"The power of the Radiant Empire is rapidly declining with the advent of the new era, but it still has a significant influence in the world, plus our Shia has been ruled by the Radiant Empire more than ten years ago, even if they are expelled by us now, there are too many of our Xia after all......"

Andrei said.

"Times are different. ”

Yabo said calmly: "The old era when the Glorious Empire relied on giant ships and cannons to run rampant all over the world is gone, and the future is in the hands of warriors, whoever can have enough holy land and resources will be able to dominate the world in the new era that has come!"

"Warrior ......"

Andre's level is not high enough, and he is a little unable to understand the true meaning of Yabo's words.

Even if it is as strong as a war-level warrior, it is equivalent to a strengthened tank, and the real strength of the country and the victory or defeat of a war are still comprehensive military strength and economic strength.

"Huh!?"

At this time, Yabo, who was looking through the information, seemed to see something: "A hundred miles in the sky?"

As he spoke, he carefully looked through this information: "It is really equivalent to half of General Melbourne's disciple of the hundred-mile long sky, Eddie took him as the target of the fight, and he wanted to pull the forces that were lurking in General Melbourne's vein to help him charge into battle in Xia Haizhou...... The calculation is good, but as far as I know, the group is very well hidden and powerful, and it will not be easy for Add to to dig them out. ”

"We've investigated this 100-mile sky, and Team Leader Eddie wasn't in Char City when he was killed. ”

Andre said, and added at the end: "Mr. Yabo thinks this person is suspicious?

"Forget if he has an alibi, this group of people is not small, let alone me, His Royal Highness the Third Prince does not want to provoke easily. ”

Yabo said, revealing the matter.

"There's actually something about this guy...... On the day of Mr. Add's death, he specially asked his assistant to edit a document, a material related to the Aurora Empire. ”

Andrei said as he pulled out another document.

Yabo glanced at it and threw it aside: "How is it possible, Eddie, this guy seems to want to borrow a knife to kill someone." ”

For a moment, as if he had thought of something, he picked up this information again, looked at it carefully for a moment and thought about it: "The power of General Melbourne's vein is not small, if it can really win over His Highness's camp......"

It took a while before he handed this document to Andrei: "Make a copy and find someone to send it to the Lafite military attache of the Aurora Empire Embassy in an anonymous manner." ”

"Yes. ”

......

Shire University.

Professor Zhou Tianwen of the Department of Physics is explaining the knowledge of sound waves.

"There is a relative motion between the source and the person, which causes the frequency of the sound heard by the person to change, resulting in a change in tone, just like a train or a car honking, and the tone changes significantly from far to near and from near to far, this phenomenon is called the Doppler effect. ”

"The Doppler effect can be used for diagnosis, when checking the blood flow rate, it can be achieved by emitting an ultrasonic vibration source, which produces a Doppler effect between the vibration source and the relative movement of the blood, the blood vessels move with the ultrasound source, the wavelength of the reflected wave is compressed, the frequency increases, the wavelength of the reflected wave increases when the blood vessels leave the sound source, the frequency decreases, and the increase or decrease of the reflected wave frequency is proportional to the blood flow rate, this principle is also used for velocimetry. ”

"The traffic police emit ultrasonic waves with known frequencies to the moving vehicles and measure the frequency of the reflected waves at the same time, and the speed of the vehicle can be calculated according to the frequency change of the reflected waves, in addition to this, this effect can also be applied to other similar waves, such as electromagnetic waves, and the conclusion that the universe is expanding is calculated based on this effect. ”

Baili Qingfeng listened to Professor Zhou Tianwen's explanation and patiently took notes.

A lesson passed quickly before you knew it.

The professor of Shire University has always left directly after class, and Baili Qingfeng hurriedly chased after him: "Professor Zhou, I would like to ask you about the connection between ultrasound, infrasound and resonance. ”

"Oh, the principle of ultrasound, infrasound and resonance is very simple, go buy an air humidifier, the air humidifier is to use the violent vibration of ultrasonic waves to break the water flow, so that the water flow forms small droplets, and then blow into the room with a fan......"

"I wanted to understand the relationship between sound waves, electromagnetic waves and bioelectric waves. ”

Baili Qingfeng said: "We humans have invented radar, sonar, and ultrasonic inspection instruments by observing bats, and can even use ultrasound to shatter stones in the body, so is it possible for human beings to enhance their understanding and storage of ultrasound and infrasound through evolution......

"The core of your problem is not sound waves, but the evolution of organs, human beings are only 20 to 20,000 hertz of sound receptivity, and the frequencies beyond this range are called infrasound and ultrasound, if you really want to evolve bat-like ultrasound ability, you first have to solve the information processing ability of your brain, this problem is solved, and the next thing is very easy to do, but the question is, can the human brain calculate so many sound wave frequency changes in such a short time. ”

The professor smiled, feeling that Baili Qingfeng was whimsical.

There is no need to answer such questions.

"Unless the brain has a filter-like function?"

"Yes, the emission of waves is not a problem, the key is to receive, filter, encode, and parse. ”

The professor nodded: "As I said in the course just now, when the sound waves and electromagnetic waves we emit encounter other objects, they will cause wave changes, the change of frequency can judge how fast the object is, and the time from the transmitted to the received wave can calculate how far the distance is, as long as this frequency change is extracted, you can easily measure the distance and speed to make a radar, if you are really interested in this aspect, prepare microwave signal sources, power dividers, transceiver antennas, high-frequency amplifiers, mixers, filters, low-frequency amplifiers, Signal Conversion Module: Try it yourself. ”

"I'll try it when I go back. ”

Baili Qingfeng Road.

The professor nodded: "If there is anything you don't understand, you can ask me again, of course, only in physics." ”

After the professor left, Baili Qingfeng quickly ran to the electronics market and searched for relevant instruments.

The Thunder Domination Concept thought that he could barely control his bioelectric field by the sixth divine transformation, and since then he has been thinking about developing a set of sonic martial arts, which can be used to deal with enemies in a range through sonic resonance.

But after all, he was a peace-loving, kind and upright man.

It was not his original intention to attack the secret method too violently, and he preferred to learn a defensive method similar to the Divine Demon Prison Body to protect himself.

He is kind to others and never provokes enemies, but I don't know why, but someone always brings him trouble, and the best way in this case is to do some prevention, detect the crisis in advance, so as to know himself and the other in a hundred battles.

So he wanted to combine his understanding of biomagnetic fields to build a project to make a bioelectromagnetic field detection radar, in order to be a prophet of the enemy.

Although the project is still in the process of being established, it is still far from success......

But he is a simple-hearted, open-minded person who loves to learn, and can face success and failure calmly, as long as he can read more books and learn more things, he can always have a full and satisfied smile on his face.

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(Thanks to the support of the prosperity and all the emptiness, the starting point is also counted as a lot of sentient beings, to be able to meet is fate, from the nuclear explosion to the closer, I hope we can always move forward side by side!)