my scientific age

Chapter 93 Science is a double-edged sword!

"Why are you here? It's cold, come and talk first." Hua Luogeng saw Yu Hua whose head was covered with snowflakes, with a surprised look on his face, motioning for Yu Hua to enter the house.

Yu Hua nodded and followed Hua Luogeng and entered the room together.

"Squeak!" There was a slight rubbing sound from the door, and it closed and closed. As soon as you entered the room, a warm feeling rushed over.

"It's so late, it must be very cold on the road." Hua Luogeng took off his coat and hung it on the hanger. He let out a breath of white air. He glanced at Yu Hua, who was covered in snow and frost on his body and head. He stepped forward and patted it lightly with his hand. The snow frost on Yu Hua's shoulders.

Yu Hua smiled: "The students are not cold..."

"Luogeng, who is here again?" At this moment, a gentle voice came from the bedroom, and Wu Xiaoyuan in winter clothes came out.

"Xiao Yuan, this is a student I knew before. I'll talk to him about something. Come and cook a bowl of ginger soup to warm him up." Hua Luogeng heard this, his eyes were full of soft colors, and he moved towards Wu Xiaoyuan. smiled.

"Hello, teacher. The student's surname is Yu, and the name is Chinese. I'm really sorry for coming to disturb you at night." Yu Hua stood aside and greeted Wu Xiaoyuan apologetically.

When Wu Xiaoyuan saw Yu Hua being polite and disciplined, he felt good in his heart and smiled: "Why are you disturbing, you go to the study, I will cook ginger soup for you."

"Thank you, Mistress." Yu Hua hurriedly thanked him.

"Yu Hua, speak in the study." Hua Luogeng smiled, straightened his sweater, motioned Yu Hua to follow, and then walked to the study.

Yu Hua nodded, followed behind Yu Hua Luogeng into the study, and gently closed the door.

"Sit down, why did you think of coming to see me today? Didn't I say before that you shouldn't be disturbed when you borrow books and read and your life is in danger?" Hua Luogeng walked to the desk and sat down, took out a pack of cigarettes from his pocket, He took out a lit one, motioned Yu Hua to sit down, and asked.

"The students came here because they wanted to borrow books to read. This is the transcript of the student's first-month quiz." Yu Hua, with a solemn face, did not sit down. He took out the transcript from the inner pocket of his clothes and handed it to Hua Luogeng. .

Hua Luogeng took a cigarette. Hearing this, he became curious. He reached out and took a look at the transcript. He couldn't help but stunned: "Is this your grade?"

"Yes." Yu Hua nodded seriously.

"I knew you before, didn't you only have 594 points last semester? Why did you suddenly increase so much." Hua Luogeng put down the transcript, he already remembered the series of numbers clearly, and he was a little puzzled, but he did not suspect that Yu Hua was cheating.

Because, the person who wrote the test paper for the quiz at Peking No. [-] Middle School was exactly him.

With a score of 698, only 2 points away from the perfect score, Hua Luogeng had read Yu Hua's student file and knew that Yu Hua's grade at the end of last semester was 594.

Between 698 and 594, the gap is a full 104 points.

"Students suddenly feel enlightened. The knowledge of reading books is easy to understand and can be remembered quickly." Yu Hua said seriously.

Hua Luogeng nodded and suddenly said, "How fast can it be?"

"Uh...you can basically remember it at a glance." Yu Hua was stunned for a while, not expecting Hua Luogeng to ask such a question, and responded after being silent for a few seconds.

"Oh? Then let's take a look at this set of numbers." Hua Luogeng's eyes lit up, he put down the slowly burning cigarette in his right hand, took out a pencil from the table, quickly wrote [-] numbers, then tore off the scratch paper and handed it to Yu Hua.

Yu Hua took a step forward and took the scratch paper. Looking at this set of numbers, he felt very familiar. After browsing it, he put it back on the desktop: "Student wrote it down."

"Come back and listen." Hua Luogeng smiled with a cigarette between his fingers.

"89793, 23846, 26433, 83279..." Yu Hua's face was natural, and the whole set of numbers recorded in his mind was very clear, neither fast nor slow. Using five numbers as the dividing line, he slowly recited two hundred numbers without any rules. number.

Hua Luogeng didn't look down at the scratch paper, those numbers had already been recorded in his mind, his eyes all fell on Yu Hua who was in front of him, his face was full of smiles, and he nodded in approval from time to time.

After dozens of seconds, the recitation sound in the study disappeared.

Yu Hua said respectfully: "Sir, the students have finished memorizing pi No.11 to No. 210."

Along with the process of reciting, Yu Hua already understood that the 210 numbers he had memorized were the tenth to [-]th digits of pi.

"I didn't expect you to know that this is the 210th digit of pi. Yu Hua, can you memorize the [-]th digit?" Hua Luogeng asked with a hint of admiration in his eyes.

When Yu Hua heard this, he looked astonished: "Sir, have you already counted the pi number 1000?"

It is not a problem to memorize the 1000th digit, but the difficulty is to manually calculate the pi to the 1000th digit.

As one of the mathematical constants, pi has always had an unparalleled and unique charm in the mathematical world, and mathematicians around the world are proud to deduce pi.

The historical development of pi is very interesting, divided into three stages, from its birth to the geometric method, and then to the current period of analysis.

At the beginning of its birth, the value of pi was only three decimal places of 3.139. In the period of geometry, the record of seven decimal places kept by Zu Chongzhi for nearly a thousand years was born. After 1000 years, the Arabic mathematician Kasi obtained 17 accurate decimal values ​​of pi. German mathematician Rudolf van Coylen counted to 20 decimal places and 35th.

In the period of analysis method in the 100th century, the fractional value of pi finally made a historic breakthrough, reaching the [-]th place through infinite series deduction.

From the 268th century to today, the latest published number of pi is the [-]th.

It can be said that each additional digit of the decimal value of pi represents a mathematical advance.

But what did he hear now?
Hua Luogeng has already calculated the pi to the 1000th place, and broke the current world record of pi without any hesitation.

Is this the power of the father of Chinese mathematics?
"I have nothing to do, and I'm number 1095." Hua Luogeng smiled.

Have a good time and have nothing to do...

You are willful.

Yu Hua took a deep breath: "Students can memorize at a glance."

"This is the next thousand digits, here it is for you." Hua Luogeng took out a stack of scratch paper full of notes from the drawer. Without thinking, he took out a scratch paper full of numbers and handed it to Yu Hua.

Yu Hua's expression was natural, without any pressure. He took the draft paper that condensed Hua Luogeng's wisdom, read it carefully as usual, and after ten seconds, wrote down the numbers from the 210th to the 1000th, and put down the draft paper: "4428810975... "

790 numbers are too many, so directly recite them in groups of ten.

The speed of Yu Hua's back was still neither fast nor slow. According to his own rhythm, Hua Luogeng closed his eyes and listened carefully.

It's not too difficult to memorize a thousand digits of pi with his memory, but it requires concentration.

After a few minutes, the sound of reciting in the study disappeared again.

"Sir, the students are done reciting." Yu Hua said softly after reciting.

Hua Luogeng slowly opened his eyes, the cigarette in his hand had been burnt out, put it in the ashtray, took out another one, and lit it with a match: "That is to say, you have completely mastered all the knowledge points of mathematics and other science subjects in the high school stage. yes?"

"Yes." Yu Hua nodded.

Hua Luogeng looked at Yu Hua and said, "Did you get the recommended student quota of National Tsinghua University in your fourth middle school?"

"I got it, the students will write the application form when they are ready to go back." Yu Hua nodded.

There was silence in the room.

Hua Luogeng didn't speak anymore, smoking a cigarette, as if thinking about something, Yu Hua stood in front of the desk, meticulously, quietly waiting for Hua Luogeng's attitude.

"Dong Dong!" At this moment, the door suddenly rang.

"Please come in."

The door opened, and Wu Xiaoyuan walked in with a food tray on it, with a bowl of steaming ginger soup on it, came to the table and put it down, showing a gentle smile at Yu Hua: "Ginger soup is here, drink it hot, Get rid of the cold, Luo Geng, smoke less."

Hua Luogeng smiled and nodded, but did not go out.

"Thank you, Mistress." Yu Hua thanked softly.

Wu Xiaoyuan waved his hand: "No thanks, you guys continue to chat."

Say it, leave.

The door closed again, and the study fell into silence again.

The second cigarette burned slowly, emitting plumes of smoke.

"Yu Hua, why did you study mathematics?" After a long time, Hua Luogeng seemed to have made a decision as the second cigarette in his hand burned out.

Hesitating for so long is not because he doesn't want to teach Yu Hua, but... Yu Hua's growth speed and talent are terrifyingly fast.

A student who is within the expected range and a genius whose growth rate and talent are completely unpredictable are completely two concepts.

Hua Luogeng, who is at the forefront of the entire Chinese scientific research field, even Yu Hua can memorize the performance of 1000 pi at a glance. What does it mean.

Hua Luogeng knows how valuable the mathematical knowledge in his head is.

"Math is a tool of natural science, and students want to get the sharpest tool." Yu Hua's original intention remained unchanged, and he responded rightly.

"The national disaster is at the forefront, the current atmosphere and environment of the country cannot carry out any scientific research, you have no funds, you have no materials, you have no resources, all the science and technology you research will be swallowed up, leaked by the government, and even funded by the enemy. , if the Japanese get any advanced technology, the threat to the country and the nation will be even greater."

Hua Luogeng said solemnly: "Science is a double-edged sword."

He didn't know what kind of scientific research Yu Hua wanted to do, but he knew that Yu Hua, who was extremely talented and potential, would be earth-shattering if he didn't do it or did it.

Mathematics is a tool of natural science. To be able to realize the true meaning of this sentence, Yu Hua's vision and wisdom have surpassed 99% of middle school students and technical talents.

Because mathematics is the only tool for knowing what is and knowing why.

"Sir, if scientific research and progress are rejected only because of potential threats, I think people with this kind of thinking are ridiculous and have no future. If a country has this kind of thinking, then it will perish!"

Yu Hua looked solemn and serious, and responded: "Of course, the students are not talking about you. You can find funds, materials and equipment. The students believe that there are more ways than difficulties."

funds?

Earn money by yourself, borrow money from classmates, or even borrow money from Balu, who is poor and poor!

Same as above,

The equipment is the same as above.

There are always more solutions than difficulties. If the so-called difficulty is to deny everything, if scientific research and progress are rejected because of potential threats, then this kind of thinking is really ridiculous.

A person who is superficial and one-sided will only see superficial things and what they want to see. Whenever things and things are different from their own, they will only criticize and deny them blindly, and even bark like a bereaved dog. .

If a country is also popular with this kind of thinking, it will surely perish. Of course, Yu Hua has not said a word, that is, the National Government has fully demonstrated the characteristics of failure and extinction in the future.

Centrifugal from virtue, high above.

(End of this chapter)