Enemies are Close at Hand

Stability group.

The storm in the group has not subsided because of the death of Eddie and his son. After all, Eddie and his son are only one of the responsible persons, and do not represent the whole of the stability group. Now ... But with the arrival of His Highness the Prince of Three Princes, the stability group works fast A big move is on the way.

"Mr. Yabo, this is the person who has information and contact with the team leader before the killing of Eddie."

Another leader of the group, Andrei, passed the information to Yabo.

Eddie and his son have been dead for months, but in the past few months they haven't disappeared, but changed their direction slightly.

"At present, the most active people in Xia are the Aurora and Chiyan people. In addition, the people of the glorious empire are not dead, and they are stirring the wind and rain in Xia ..."

Yabo looked at the information and looked a little indifferent.

"The power of the Glorious Empire is rapidly declining with the advent of the new era, but it still has a decisive influence in the world. In addition, our Shia has been ruled by the Glorious Empire more than a decade ago, even if they are driven out by us now, After all, there are too many of us in the back of Shia ... "

Andre said.

"The times are different."

Abo calmly said: "The glorious empire relied on giant ships and cannons to run around the world. The old age is gone. In the future, it is in the hands of warriors. Whoever has enough sacred places and resources will be in the new era that has arrived. Dominate the world! "

"Musha……"

Andre's level is not high enough, and some can't understand the true meaning of these words.

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

"Ok!?"

At this time, Yabo who looked through the materials seemed to see: "A hundred miles of sky?"

While talking, he carefully looked at the information: "It is really the hundred-mile sky that is equivalent to half a disciple of General Melbourne. Eddie took him as a target to pull the forces lurking down from General Melbourne. Help him to charge in Xia Haizhou ... It's a good plan, but as far as I know, the people are hiding deeply and the power is not weak. Eddie wanted to dig them out was not easy. "

"We have investigated this hundred miles, and when Captain Eddie was killed, he was not in the city of Xia."

Andrei added the last sentence: "Mr. Yabo thinks this person is suspicious? Then he is also included in the key investigation?"

"Even if he has proof of his presence, this group of people is not insignificant, let alone me, His Royal Highness Three Princes are not willing to provoke him easily."

Yabo said, exposing the matter.

"In fact, there are people in this group ... the day when Mr. Eddie died, he specially asked his assistant to edit a profile, a profile involving the Aurora Empire."

Andrei said to extract another piece of information.

Yabo glanced to the side and said, "People who suspect that the sky is killing Russell? How can it be, this guy from Eddie seems to want to kill with a knife."

For a moment, he seemed to think of something again. He took up the document again, and carefully looked at it for a moment, thinking: "The forces lurking down in the vein of General Melbourne are not small, if it can really draw to the Highness's camp ..."

It took a while before he handed this information to Andrei: "Copy a copy and find someone to send it anonymously to the Aurora ambassador to the Rafi military ambassador."

"Yes."

...

Shire University.

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

"There is relative movement between the vibration source and the person, causing the frequency of the sound to be heard to change, which causes the tone to change, just like the whistle of a train or a car, the tone of which 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 examining the blood flow rate, it can be achieved by transmitting an ultrasonic vibration source. The Doppler effect is generated between the vibration source and the relatively moving blood. The blood vessels move against the ultrasonic source, and the wavelength of the reflected wave is compressed. As the frequency increases, the wavelength of the reflected wave increases and the frequency decreases when the blood vessel leaves the sound source. The increase or decrease in the frequency of the reflected wave is proportional to the blood flow velocity. This principle is also used for speed measurement. "

"The traffic police sends ultrasonic waves with a known frequency to the moving vehicle while measuring the frequency of the reflected wave. The speed of the vehicle can be calculated based on the frequency change of the reflected wave. In addition, this effect can be applied to other similar waves. The conclusion that the universe is expanding, such as electromagnetic waves, is calculated based on this effect. "

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

One lesson passed unknowingly.

The professor at Shire University always left after finishing the class. At the moment, Baili Qingfeng quickly 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. Buy an air humidifier. The air humidifier is to use the violent vibration of the ultrasonic wave to break up the water flow, make the water flow into small droplets, and then blow it into the room with a fan ..."

"I want to understand the relationship between sound waves, electromagnetic waves, and biological waves."

Baili Qingfeng said: "We humans have invented radar, sonar, and ultrasonic inspection instruments by observing bats, and can even use ultrasonic waves to break up stones in the body. Then, is it possible for human beings to enhance their own understanding of ultrasonic waves and infrasound through evolution? Hold ... "

"The core of your problem is not sound waves, but the evolution of organs. Humans have only 20,000 to 20,000 hertz of sound, and will call frequencies outside this range infrasound and ultrasound. If you really want to evolve bats, Ultrasound ability, you must first solve the information processing ability of your brain. This problem solves the next thing. It is easy to handle. But the question is, can the human brain calculate so many changes in sound frequency in such a short time? . "

The professor smiled and felt 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 lies in receiving, filtering, encoding, and parsing."

The professor nodded: "The course just said that when we emit sound waves and electromagnetic waves that encounter other objects, they will cause fluctuations. The change in frequency can determine how fast the object is, and the time from when it is transmitted to when it receives the wave can calculate how far away it is. As long as this frequency change is extracted, you can easily measure distance and speed, and make a radar. If you are really interested in this area, prepare microwave signal sources, power dividers, transceiver antennas, high-frequency amplifiers, and hybrids. Frequency converter, filter, low-frequency amplifier, signal conversion module to try it yourself. "

"I'll try it when I go back."

Baili Qingfeng said.

The professor nodded: "If you don't understand anything, you can ask me again, of course, it's limited to physics."

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

Thunder dominated the idea to the sixth divine transformation, and he could barely control his own bioelectric field. Since then, he has thought of developing a set of sonic martial arts to deal with enemies through sonic resonance.

After all, he is a peace-loving, kind person.

Attacking the secret method is too violent for his original intention. He prefers to learn a defense method similar to that of the devil town to protect himself.

He treats others well and never provokes the enemy, but I do n’t know why. Someone always causes him trouble. In this case, the best way is to take some precautions and detect the crisis in advance, so that he can know himself and the enemy.

So he wanted to combine his understanding of the biological magnetic field to build a project to manufacture a bio-electromagnetic field detection radar, in order to meet the enemy's prophets.

Although this plan is currently under construction, it is far from successful ...

But he is a simple and open-minded person who loves to learn. He can face both success and failure. As long as he can read more and learn more, he can always have a full and satisfying smile on his face.

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(Thank you for the support from the bustling city, and the starting point is also countless sentient beings. Being able to meet is fate. From the nuclear explosion to the close, I hope we can always go side by side!)