Liu Yuehong blushed. When Zhao Weihua saw this, he quickly took Liu Yuehong home. Everyone laughed. It can be said that they grew up watching Zhao Weihua. He was tall, handsome, and smart. Among his family members,
The hospital is especially popular with little girls, and they like it too.
"Mom and Dad, this is my partner Liu Yuehong!" Zhao Weihua said with a smile on his face, "Mom and Dad, these are my parents!"
"Uncle, aunt, hello!"
Liu Yuehong was still a little shy, but Mother Zhao liked Liu Yuehong as soon as she saw her. She was pretty, and she seemed to be blessed at first sight, so she held Liu Yuehong's hand and wouldn't let go.
"Good girl, don't be polite when you come to our house, it will be your own home from now on!"
"kindness!"
Liu Yuehong nodded with a blush, and Zhao Weihua quickly picked up the things in his hands, "Mom and Dad, these are the things Yuehong bought for you. You can keep this malted milk for yourselves, and this bag of brown sugar, you can also keep it."
Well, I just ate this meat today, which is also Yuehong’s idea!”
"Look at you, you're here even though you're here, and you still bring any gifts. This kid is so polite!"
"Auntie, this is all as it should be. I just don't know what you and uncle like, so I just bought some at random. Don't dislike it!"
"Nonsense, you and Wei Hua are getting along well. Auntie is happier than anything else, but she won't dislike it!"
Zhao's father also looked happy. At noon, Liu Yuehong helped Zhao's mother prepare meals together. Zhao's mother liked Liu Yuehong's attitude even more. It can be seen that this future second daughter-in-law will definitely be a good wife and loving mother in the future.
, that boy Wei Hua will be blessed in the future.
...
The Zhao family is still very harmonious, and Zhao Weihua's eldest brother and sister-in-law are also relatively easy to get along with, and Zhao's mother also said that after they get married, they will separate and not live together with the elderly. Liu Yuehong is quite happy about this,
After all, the relationship between mother-in-law and daughter-in-law has been contradictory since ancient times. She can see that Zhao's mother really likes her, but there will be conflicts in living together. As the saying goes, it would be better if they don't live together!
Liu Yuehong met Zhao's parents, and the next day Zhao Weihua proposed to visit his future father-in-law in Dashantun. After all, he really wanted to live with his future wife, and living alone now was simply too fucked up.
Liu Yuehong's progress is going well, and Liu Qianqian and her party have also returned to the five counties from Harbin. As for the results of the provincial competition, they will be announced at the beginning of the year. At this time, the school is already preparing for the final exam. For Liu Qianqian, these are not
After finishing the exam, Liu Qianqian plunged into the Institute of Physics to study her own sonic weapon.
Liu Qianqian was sent back with a message and took root in the Institute of Physics. Because many of the materials she wanted were not available, she had to start researching the materials. Since she was making self-defense weapons for herself, Liu Qianqian naturally would not give in.
, the above will only be happier about this, because what Liu Qianqian has researched is cutting-edge technology. They can only sigh that Liu Qianqian’s head is really the most powerful brain, and it may contain technology that surpasses this world for decades.
, in this regard, the above also pay more attention to Liu Qianqian's safety.
"Sissi, go eat first. You have to pay attention to your health while doing experiments. Don't ruin your body. Let's eat first!"
"You are still young now. This is the most important time to pay attention to your health. You are still young, so there is no need to worry so much."
Professor Wang looked at Liu Qianqian who was doing experiments in the laboratory. Liu Qianqian has been in the laboratory these days. Even eating is done in the laboratory. I have to say that Liu Qianqian has completely subverted them.
My impression of her is that she is a researcher engaged in scientific research.
...
When a person is exposed to an audible sound environment with a volume above 120 decibels without any protection, he or she will feel uncomfortable or damage the hearing system. When the volume rises above 150 decibels, people in this environment will experience
The eardrum ruptures and bleeds, hearing loss occurs, and even mental disorder occurs.
Infrasound waves are not easy to attenuate and are not easily absorbed by water and air. Infrasound waves often have very long wavelengths, so they can be diffracted around obstacles like electromagnetic waves. The damage range is large, but the direction is difficult to control.
High-power infrasound waves can cause strong resonance in internal organs, causing nausea, headaches, difficulty breathing, and even rupture of blood vessels and damage to internal organs.
The effect of high-power ultrasonic waves is similar to that of infrasound waves, but its transmission directionality is better than that of infrasound waves. It propagates almost in a straight line, is easy to control, and has strong straight-line penetration ability, but its killing range is small.
Generally, sonic weapons do not use sound waves within the human audible frequency range, because infrasound and ultrasonic waves are highly concealable.
Liu Qianqian is researching infrasonic weapons this time. For her, infrasonic weapons are the most lethal. In her previous life, infrasonic weapons have been able to control the direction, and can also accurately control a certain point or a certain range.
, this kind of infrasonic weapon is what she needs.
Infrasonic weapons are high-power weapon devices that can emit infrasound waves below 20 Hz. Complex sound waves are mechanical longitudinal waves, which can propagate in solids, liquids and gases. The sounds that people can hear every day are sound waves in the frequency range of 20 to 20,000 Hz.
Below 20Hz are infrasound waves. The reason why infrasound waves are used as military weapons is that infrasound waves are similar to the natural frequencies of human organs, so they will resonate. The resonance of infrasound waves with human organs can cause organ deformation, displacement or even rupture, thus
To achieve the purpose of killing.
Infrasonic weapons can be roughly divided into two categories: neural infrasound weapons and organ-type infrasound weapons.
The infrasound frequency of "neuro-type" infrasound weapons is very close to the alpha rhythm of the human brain (8~12Hz). Therefore, when infrasound waves act on the human body, they stimulate the human brain, cause resonance, and have a certain impact on human psychology and consciousness.
In mild cases, it may cause discomfort, decreased concentration, and emotional uneasiness, leading to dizziness and nausea; in severe cases, it may cause confusion, insanity, shock, fainting, and loss of thinking ability.
The infrasound frequency of "organ-type" infrasound weapons is close to the natural frequency of human internal organs (4~18Hz), which will cause strong resonance in human internal organs. In mild cases, muscle spasms, whole body trembling, and difficulty breathing; in severe cases, blood vessels rupture
, internal organ damage, and even rapid death.
Liu Qianqian put down the experiment in her hands and looked up to see Professor Wang.
"Sissi, go eat first!"
Liu Qianqian nodded, cleaned up the test bench, and then followed Professor Wang to the special cafeteria of the Institute of Physics to eat.
The two of them were walking and chatting along the way. Professor Wang knew very little about sonic weapons. Liu Qianqian was talking along the way while Professor Wang was listening. Of course, in order to be able to help, Professor Wang and Professor Kong, some senior
The professors are also actively learning about sound waves, but compared to Liu Qianqian, their learning is still too simple.