Enemies are Close at Hand

"This book ..."

Baili Qingfeng looked at these books.

Forces, common types of forces, force synthesis, force decomposition ...

"It's not electromagnetic related knowledge, but I can't be partial ... otherwise, it will inevitably affect the final results, even if this knowledge is not what I want, I have to endure reading it."

Baili Qingfeng pursed his lips and continued to look.

Force interaction, friction, static friction, friction factor, resultant force, centrifugal force, vibration and resonance ...

"This is kind of interesting."

Baili Qingfeng saw it suddenly stopped like chewing chicken ribs.

At the beginning of the nineteenth century, a neat army striding through a stone bridge struck down a bridge by resonance.

"Amplitude, period, frequency, natural frequency ... resonance ..."

Baili Qingfeng looked at the description in the book.

A country woman played the flute, but caused the caterpillars on the fruit tree to die. The flute sound transmitted the vibration to the caterpillar through the air, causing the caterpillar to make forced vibration. Due to the similar frequency of the two, the caterpillar's internal organs caused resonance Rupture caused death.

"If you can study this, maybe you can create a boxing technique and a secret method that use vibration waves to cause visceral resonance in other people's bodies and tear its internal organs."

Baili Qingfeng also has a good physical foundation. To create a secret method based on the principle of resonance, you must understand the vibration wave.

There are many types of vibration waves. Without mentioning the fundamentals of shear waves and longitudinal waves, it is necessary to understand the wave period, wavelength, and wave speed. The relationship between the three can be indicated by υ = λ / T.

This simple formula is applicable to both electromagnetic waves and light waves.

After watching some waves, Baili Qingfeng quickly saw something else of interest.

Sound waves.

Most media in the world can transmit sound waves, but different media have different transmission speeds.

For example, the sound velocity of air is 332 meters per second, water reaches 1,450, copper is higher than 3.8, and iron reaches 4.9, but the reason Baili Qingfeng is interested in these is sound waves. Vibration rules.

Regular and periodic vibrations can be called music. They are peaceful and pleasant. Irregular and periodic vibrations can only be noise, which is crazy.

But this statement cannot be generalized.

After all, music also has three elements: tone, loudness, and timbre.

"Sure enough, music lovers still have to learn more about physics so that they can see the essence of music."

Baili Qingfeng finally became enthusiastic about this textbook.

A brand new door was slowly opening to him.

...

Shuiyun Yayun.

One week later, Baili Qingfeng came to this instrument store again.

There were no other guests on the second floor except Gu Lingying, Qin Lanshan, and Yunsheng Yan.

"Brother Qingfeng, you are here."

Seeing Baili Qingfeng, Qin Lanshan was the first to greet him: "My dad listened to your music and thought you were very talented. He wanted to see you, don't you know?"

Baili Qingfeng thought about it and answered it: "Yes, here next time."

"Okay, brother Qingfeng, let's just say so."

Qin Lanshan said happily.

"Master Qing Feng, I don't know what you think of pop music?"

Gu Lingying asked with a smile.

She is wearing an antique dress today, with a white winged hair clip on her head, soft hair that naturally falls off her shoulders, and a sky-blue belt tied to her slender waist, which looks pure and elegant.

"Actually, I don't think music needs to distinguish between pop music, classical music, electronic music, and dance drama music. As long as it can sound good and move people's hearts, it's all good music."

Baili Qingfeng said.

"Yes, as long as it's nice, regardless of type, I like to listen."

Qin Lanshan said with a smile.

Then listen to the song, play the piano, play the flute, chat, and discuss some related knowledge. The day passed quickly.

Gu Lingying looked at Baili Qingfeng when he was about to be different, and seemed to be a little bit restless.

A moment later, she came forward and said, "Senior Qing Feng, I want to ask you to do me a favor. I don't know if you have heard of the music program" Tianji "."

"TV Music Show ..."

Baili Qingfeng thought it over carefully: "The last time I watched TV ... It seemed that a few months ago, the house was holding news ..."

Qin Lanshan on the side froze for a moment, and it was unbelievable: "Brother Qingfeng,‘ Tianhuan ’, but the best and most popular music show in the whole Hea, do you in the industry not know?

"People in the industry? Singing is just my hobby, I'm not in the industry."

Baili Qingfeng honestly said, "As a student, I have spent most of my time studying with books."

"..."

Qin Lanshan heard Baili Qingfeng's reason, but she did not know how to refute.

Students, indeed, should study hard.

"But you have something to say. I'll see if I can help."

"That's it. My sister Su Weiwei was supposed to be No. 1 in Tian'an because her internal operation ended up in fourth, and the first three were not included. She plans to hold a small pop concert to prove herself. The teacher was very supportive after learning about this matter, and recommended us two to be guests, to perform a smile and play together with heaven and earth, but ... I do n’t know if there is time for Qingfeng.

"I'm just an amateur music enthusiast. This kind of occasion will definitely be nervous, forget it."

Baili Qingfeng said.

"Like This……"

Gu Lingying was a bit lonely.

But Qin Lanshan got together, and Chu Chu said pitifully: "Brother Qingfeng, you promised to help me, help Sister Weiwei, you do n’t know, the first day of" Tianyi ", regardless of the first, second and third, Far from being Sister Wei Wei ’s opponents, but by relying on internal operations, they wiped out Sister Wei Wei ’s first place. It was so irritating that Sister Wei Wei wanted to get revenge on the concert, and, The concert is not a concert. There are not many people. The invited audience is less than 200 people. Most of them are well-known people in the circle. They are music lovers and people who understand music. You have a common topic together. "

Yunsheng Yan on the side thought for a moment, and then said aloud: "Wei Wei's girl is really very talented. It would be a shame if she was so depressed."

Baili Qingfeng glanced at the three of them, and finally stopped his eyes on Gu Lingying for a moment, hesitating a little: "According to your statement, this is the battle of sermons of your sister Su, if I don't play well ... ... "

"Master Qingfeng, I believe in your standards."

Gu Lingying looked at Baili Qingfeng, full of trust.

"Yes, brother Qingfeng, you can do it."

Qin Lanshan shook his fist and encouraged.

"Well."

Baili Qingfeng responded, and said to Gu Lingying: "Let's work together."

"Yes, come on together, we can practice more if we have time."

"Speaking of practice, I have recently gained some new understanding of music and discovered a lot of new knowledge. These knowledges are all treasures, but I am still recording them. When they are finished, I will give them back to you. Look."

Baili Qingfeng said.

"Wow? Is it a music cheat? You can become a master of music after watching it? I want to see it now."

Qin Lanshan quickly gathered up and brought a girl's fragrance.

Not only Qin Lanshan, but Gu Lingying and Yun Shengyan also couldn't wait to get together.

And Baili Qingfeng saw several people full of interest and did not hide.

"That being the case, I'll show you my new baby."

While talking, he took out a copy ...

Shire University physics textbook.

"Look, this book of physics is invaluable. I recently researched physics and found out that the study of sound waves can produce different insights into music and a more thorough understanding of the nature of music moving people. Let ’s study it. You see here ... "

——————

(There is no limit to learning, the older you get, the more you find out that the amount of knowledge you have is not enough. Everyone has time to read more books. Regardless of the type, this is a spiritual enrichment. Of course, the premise is that after the work is done every day Can have time.)