Li Qingzhao, Miao Ruohong, Xian Yuting, Wang Yi, Dongfang Bi...... One by one, they rushed to Lingnan.

Love the evening pavilion under the large manor.

"Brother-in-law, this is Physics, it doesn't look like anything!" The cunning girl looked at the handwriting book in her hand and was startled.

After the battle of the alliance, Qin Ning also came to the Qin Dynasty, Gongsun Dapeng and his wife left, but Qin Ning and Lin Su stayed by the Qin Dynasty's side, after all, they should have learned about the same, and occasionally being outside does not affect the progress of martial arts.

"It's simple, but it's up to you to use it. Guo Yuanyuan leaned over to Qin Ning and glanced at the handwritten book in her hand, what Qin Ning saw at the moment was the 'change of state of matter' chapter of the so-called junior high school "Physics" chapter of the Qin Dynasty, Guo Yuanyuan immediately laughed: "You see that there are three forms of matter here: solid, liquid and gas, which can contain the Great Dao. ”

"Dao?" Qin Ning pursed her lips, "Sister Yuan, don't blow it for him, I don't see what's good about this." ”

"That's because you didn't think about it, otherwise someone with a heart can make millions of dollars just by reading this 'change in the state of things'. Guo Yuanyuan smiled lightly, "You finish reading it first, and then I'll tell you, Sheng Dynasty, are you going to throw them out now?" The latter words were said to the Qin Dynasty next to him.

"Throw away some of the simple ones first, and put the ones that are too shocking first. Qin Chao nodded, junior high school "Physics" is actually very simple, it talks about common sense in life, and it is naturally the most acceptable.

Soon, a part of the 'Junior High School Physics' was published in the new issue of the New Youth newspaper.

"Teacher, this is the new issue of the "New Youth" newspaper, according to the newspaper seller, there is Qin Xianao's latest article. ”

"Oh, Qin Xianao's new article. Cheng Yilian stretched out his hand to take the newspaper, "Zhongli, look at you in such a hurry." I shouldn't have seen it yet, so let's watch it together. ”

"Yes!"

Yang Shi and Cheng Yi opened the newspaper, and the front page was not Qin Xianao's article, so the two of them skipped it directly, and soon found Qin Xianao's article in the nature column.

"Physics"?

The two of them looked slightly moved, and Qin Xianao advocated a new way of vernacular education. It is divided into elementary school, junior high school, high school, etc., among which primary school textbooks are the easiest to write, and junior high school, everything else is easy, but "Physics" and "Chemistry" have not been able to find suitable writers.

"It seems that this Qin Dagongzi can't find anyone, so he decided to write the teaching materials himself!" Cheng Yi laughed.

Yang Shi also laughed: "Qin Xian has always been arrogant, he thinks that Lao Tzu is the best in the world, and what others can't do, he is naturally extraordinarily energetic." Let's take a look at what this great Qin genius has written!"

The two couldn't wait to watch it.

"Chapter 1: The Phenomenon of Sound"

"The occurrence of sound: it is produced by the vibration of the object, the vibration stops, and the sound stops......"

Looking at the "Physics" in the newspaper, Cheng Yi showed a weird smile on the corner of his mouth, and Yang Shi also shook his head with a smile, "Physics" in junior high school is mainly to define and explain some common sense in life. These explanations are for children, teenagers, etc. It may be necessary, but for smart masters like Cheng Yi and Yang Shi.

Will they not understand that sound is produced by the vibration of objects?

Will they not understand that the sound weakens during propagation?

"Huh?" Cheng Yi's smile froze, and Yang Shi's mouth opened slightly.

"Sound is transmitted by media, and vacuum cannot transmit sound?" Cheng Yi's brows furrowed slightly, and Yang Shi looked up at Cheng Yi: "Teacher, this Qin Xianao said that the sound we heard came from the air. What's going on? And the vacuum he mentioned, is that possible?"

Cheng Yi squinted, the definition of vacuum Qin Xianao had already answered the question, but ......

"Qin Xianao called the thing around us that there was nothing. Cheng Yi's eyes burst into light, "The air is nothing." Therefore, we call qi qi, and the air itself is the real emptiness, but looking at Qin Xianao's words, it is completely that the emptiness around us is actually a thing, not a real emptiness, this kind of thing is called 'air'. ”

Yang Shi nodded slightly: "I think so too, Qin Xianao's guess is probably not right." ”

"Normally, it's wrong, but why would such a smart person as Qin Xianao have such an idea?" Cheng Yi squinted, "There must be something in this that we don't understand." Speaking of this, Cheng Yi smiled slightly: "Yes, this "Physics" is a bit interesting, I thought he couldn't say anything new, but I didn't expect that there was a 'air' and 'true qi' at the beginning, and you see him said 'vacuum can't make a sound', why did he come to such a conclusion, it's worth playing!"

"Hmm. Yang Shi also smiled and nodded, "Qin Xianao is just a bunch of, he can also play a little trick that others can't play, this is what I admire about him." ”

The two continued to look down, stunned again.

"The speed at which sound travels through the air is 340 meters per second. ”

Cheng Yi touched his beard, the two units of 'meter' and 'second' were mentioned in the newspaper as a unit of length and time unified in Lingnan, where Qin Xianao was located.

"It's amazing!" Cheng Yi sighed slightly, "This Qin Xianao wrote "Theory of Tools" to advocate rigorous study, he really practiced it, and even tested the speed of sound propagation, this person is terrifying!"

Yang Shi raised his head and sighed: "I don't understand, how did he test the speed of sound propagation?"

"This is also the terrifying thing about Qin Xianao. Cheng Yi smiled, his gaze continued to sweep down, his face was even more solemn, this is talking about some characteristics of sound, such as pitch, loudness, music, like frequency, amplitude, these can be understood at a glance, but-

"Audible sound is a sound wave with a frequency between 20Hz~20000Hz!"

"Ultrasonic refers to sound waves with a frequency higher than 20,000Hz, which have good directionality, strong penetration, and concentrated sound energy......"

"Infrasound refers to sound waves with a frequency of less than 20Hz, which can travel far away, easily bypass obstacles, and are pervasive, even causing harm to the human body......"

Cheng Yi and Yang Shi pondered.

"Teacher, do you believe that there will be such ultrasound and infrasound?"

"Qin Xian is rigorous in his studies, he said that if there is, there must be, but we never thought that we could take out so many things in our voices before!"

......

The first article is followed by the second article, "Changes", then the third article, "Optics", then the fourth article, "The Motion of Objects", and the fifth article......

Inside an ordinary house.

"Okay, good thing, this is the real serious learning!"

"Lord Shen is crazy, Lord Shen seems to be stimulated. A few middle-aged people not far away looked at Shen Kuo, who was laughing and screaming, and glanced at each other, "Today's newspaper, Qin Xianao's article is indeed an eye-opener, but it can't be like this, Lord Shen, isn't it?"

"Who knows, but what do we care about so much?"

"That's right, Lord Shen has always been a little crazy. ”

In the room, Shen Kuo looked at the newspaper in his hand.

"The speed of sound propagation is 340 meters?"

"Vacuum can't transmit sound, sound can only be transmitted through a medium?"

Shen Kuo's expression was full of excitement, he wrote "Dream Creek Writings" and also wrote about optics, acoustics, and various physical phenomena, but ......

is also acoustics, Shen Kuo only wrote about resonance, but the acoustics of the Qin Dynasty was comprehensive, and one after another acoustic knowledge that Shen Kuo couldn't even think of jumped out.

After a long time, Shen Kuo put down the newspaper.

"The old man wrote "Mengxi Writings" in miscellaneous studies has thrown off Cheng Yi, Sima Guang, Wang Anshi, Su Dongshi and others 108,000 miles, and 108,000 miles away from the miscellaneous scholars of previous dynasties, but it is ......"

Shen Kuo shook his head and continued to watch "Physics" in the newspaper.

"Qin Xian is really proud of 'cheap learning'......" Sima Guang read the newspaper, his eyes flashing from time to time, "It turns out that matter can still be like this, does all the matter here have three states? Is it possible that iron can also be vaporized......?"

"Haha, what a Physics. Wang Anshi laughed heartily, "We usually talk about a person being smart, and one thing is that this person can draw inferences from one another, Qin Xianao is such a person, you see, we all know that water is constantly boiling, and it will evaporate, but who would have thought that not only water can evaporate, but oil can also evaporate?"

"We thought we understood all this common sense, but did we really understand it?" Su Shi looked at the newspaper and sighed, "Although Qin Xianao is engaged in 'cheap learning', it is a cheap study that scholars look down on, but this contempt, isn't it a kind of irony, this simple cheap learning, extremely simple knowledge of things, is really not simple!"

......

Cheng Yi, Sima Guang, Wang Anshi, Shen Kuo...... The bigwigs in the martial arts world read the "Physics" in this newspaper, and in the later junior high school, the "Physics" was actually very simple, and the content was also very plain, and it could not cause much impact and shock to the 'well-informed' modern people.

But the Song Dynasty more than 1,000 years ago.

There will be a 'vacuum' in the world, and the empty space around you is not really empty, but is filled with air, and the sound propagates at a speed? And is it 340 meters per second?

Even the simplest modern common sense can cause the concept of the bigwigs to subvert.

The bigwigs are like this, ordinary readers, and the scholars are even more excited after reading it.

"So that's what happened!"

"Although it is a cheap study, it has given us a lot of knowledge. ”

"Okay, Qin Xianao is powerful, he always couldn't figure out some phenomena before, but now he has given an explanation, but it's a pity that this is cheap learning!"

"Listening to your words, it is better to read a book for ten years, and Qin Gongzi's "Physics" is basically very rigorous. ”

......

Most of the readers are Confucianists, and Confucianism despises cheap learning, and these readers are also affected, but some of the content of "Physics" does make people read it energetically, so although they read it one by one, they get together, although the word "cheap learning" pops up from time to time, but when it comes to the content of "Physics", it is particularly energetic, especially in this issue of the newspaper, there is still a question left without a beginning and no end - what can "Physics" do? (To be continued.) )