"This book ......"

Baili Qingfeng flipped through these books.

Force, common forces, synthesis of forces, decomposition of forces......

"It's not about electromagnetism, but I can't be biased...... Otherwise, it will inevitably affect the final grade, and even if this knowledge is not what I want, I have to endure reading it. ”

Baili Qingfeng pursed his lips and continued to look at it.

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

"That's kind of interesting. ”

Baili Qingfeng saw this suddenly stop like chewing chicken ribs.

At the beginning of the 19th century, when an army marched in unison over a stone bridge, it trampled on a bridge through the principle of resonance.

"Amplitude, Period, Frequency, Natural Frequency...... Resonance ......"

Baili Qingfeng looked at the description in the book.

A country woman plays the flute, but the caterpillars on the fruit tree are killed, because the flute sound transmits the vibration to the caterpillar through the air, so that the caterpillar is forced to vibrate, and because the frequency of the two is similar, the caterpillar's internal organs are ruptured due to resonance and death.

"If you can study this, maybe you can create a boxing technique, a secret method, to use vibration waves to cause the internal organs of others to resonate and tear their internal organs apart. ”

Baili Qingfeng itself also has a good foundation in physics, and to create a secret method based on the principle of resonance, you also need to understand the vibration wave.

There are many types of vibration waves, not to mention the basic nature of transverse waves and longitudinal waves, but also to understand the period, wavelength and wave speed of the wave, and the relationship between the three can be shown by υ = λ/T.

This simple formula applies to both electromagnetic and light waves.

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

Sound wave.

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

For example, the speed of sound in air is 332 meters per second, water is 1,450, copper is 3,080, and iron is 4,090, but the reason for this is that the sound wave vibration rules are interested.

Regular and periodic vibrations can be called music, peaceful and pleasant, and irregular and periodic vibrations can only be noise, which is maddening.

But this statement cannot be summed up in one word.

After all, there is a saying that music has three elements: tone, soundness, and timbre.

Sure enough, people who love music still need to study physics so that they can see the essence of music. ”

Baili Qingfeng finally gradually watched this textbook with relish.

A new door was slowly opening to him.

......

Water clouds and elegant rhyme.

After a week, Baili Qingfeng came to this musical instrument store again.

This time, there were no other guests on the second floor except for Gu Lingying, Qin Yanshan, and Yun Shengyan.

"Little brother Qingfeng, you're here. ”

Seeing Baili Qingfeng, Qin Yanshan was the first to greet him: "My dad listened to your music and thought you were very talented, he wanted to see you, I don't know if it's okay?"

Baili Qingfeng thought for a while and responded: "Yes, let's be here next time." ”

"Okay, little brother Qingfeng, we'll settle it. ”

Qin Yanshan said happily.

"Senior Qingfeng, 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 hairpin on her head, her soft hair falls naturally down her shoulders, and a sky blue belt is tied around her slender waist, which looks pure and elegant.

"Actually, I don't think music has to be different from pop, classical, electronica, and dance drama, as long as it can sound good and move people's hearts, it is good music. ”

Baili Qingfeng Road.

"Yes, as long as it sounds good, I like to listen to it regardless of genre. ”

Qin Yanshan said with a smile.

Next, listen to songs, play the piano, blow the flute, chat, discuss and discuss some related knowledge, and the day passed quickly.

When it was time to separate, Gu Lingying glanced at Baili Qingfeng, and seemed to be a little eager to speak.

After a while, she stepped forward and said, "Senior Qingfeng, I want to ask you to do me a favor, I don't know if you have heard of the music program 'Tian Lai'." ”

"TV Music Program ......"

Baili Qingfeng thought carefully: "The last time I watched TV...... It seems that a few months ago, the news was playing in the house......"

Qin Yanshan on the side was stunned, a little incredulous: "Little brother Qingfeng, 'Tian Lai' is the best and most popular music program in the whole Xia Ya, you don't know it?"

"Singing is just my hobby, I'm not an insider. ”

Baili Qingfeng said honestly: "As a student, I spend most of my time reading and studying. ”

“......”

Qin Yanshan heard Baili Qingfeng's reason, but she didn't know how to refute it.

Students, indeed, should read and study hard.

"But if you have anything to say, I'll see if I can help. ”

"That's right, my senior sister Su Weiwei should have been the first place in 'Tian Lai', because the internal operation ended up only getting fourth, and the top three were not ranked in, she planned to open a small pop music concert to prove herself, and the teacher strongly supported after learning about it, and recommended the two of us to be guests, interpreting the song of Xiaoao Jianghu and the combination of heaven and earth, just ...... I don't know if Senior Qingfeng has time. ”

"I'm just an amateur music lover, and it's going to be stressful for an occasion like this, forget it. ”

Baili Qingfeng Road.

"That's ......"

Gu Lingying was a little lonely.

But Qin Yanshan came up, and Chu Chu said pitifully: "Little brother Qingfeng, you just promise to help Sister Weiwei, you don't know, that issue." Tian Lai's no matter the first, second or third, is far from Sister Weiwei's opponent, but they relied on internal operations to brush off Sister Weiwei's first place, it's really annoying, Sister Weiwei's concert is just to take revenge, moreover, 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 all people who love music and understand music, you definitely have a common topic together. ”

Yun Shengyan on the side thought for a moment, and then said: "Weiwei's girl is indeed very talented, it would be a pity if she was suppressed like this and fell into a slump." ”

Baili Qingfeng glanced at the three of them, and finally his gaze paused for a moment on Gu Lingying, and said with some hesitation: "According to your statement, this is your Senior Sister Su's battle of preaching, if I don't play well......"

"Senior Qingfeng, I believe in your level. ”

Gu Lingying looked at Baili Qingfeng, full of trust.

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

Qin Yanshan clenched his fists and encouraged.

"That's good. ”

Baili Qingfeng responded and said to Gu Lingying: "Then let's work together." ”

"Yes, let's work together, we can practice more when we have time. ”

"Speaking of practice, I've had a new understanding of music lately, and I've discovered a lot of new knowledge, which is a treasure, but I'm still recording it, and I'll show you when I'm done. ”

Baili Qingfeng Road.

"Wow? What kind of music cheats? You can become a music master by reading it? I really want to read it now. ”

Qin Yanshan quickly came up, bringing a burst of girlish fragrance.

Not only Qin Yanshan, but also Gu Lingying and Yun Shengyan couldn't wait to come up.

And Baili Qingfeng saw that a few people were full of interest and did not hide their selfishness.

"In that case, I'm going to show you my new treasure. ”

As he spoke, he took out a copy of the ......

Physics textbook at Shire University.

"Look, this physics book, knowledge is priceless, I recently studied physics and found that through the study of sound waves, I can have different insights into music, and have a more thorough insight into the essence of music that touches people's hearts, let's study it well, you see here......"

——————

(There is no end to learning, the older you get, the more you find that the amount of knowledge you have is far from enough, you can really read more books when you have free time, regardless of the type, this is a kind of spiritual enrichment, of course, the premise is that you can still have time after you are busy with work every day.) ）