"It's all a group of people who don't do their jobs, but they all have nothing to say."

Qin Yi shook his head helplessly and began to look for books.

The library of Huaxia University has a very rich collection of books, and in the whole of China, it is estimated that only Imperial Capital University can surpass the collection of Huaxia University.

The entire huge library, from the most basic books to professional books, all have numbered, in the internal library network can accurately check the location of the books, very easy to find.

After more than ten minutes, Qin Yi returned to his seat with a pile of books, more than ten books, including mathematics, physics, chemistry, biology, and even literature, art, music, etc., very miscellaneous, in the words of the old man, reading should be changed to read, so that it will not be tired, and it will be easier to absorb.

"High School Mathematics Knowledge Encyclopedia~"

Qin Yi picked up a book and began to look at it seriously, although it was said that he started learning from basic things, but Qin Yi couldn't learn the content of elementary school and junior high school, at least naturally he started learning from high school.

In high school mathematics, Qin Yi learned very well, and he almost got a full score in the college entrance examination, so when he learned this high school mathematics knowledge, it was also very easy, without a trace of difficulty.

"My memory has improved a lot, and I can almost remember it."

Soon, Qin Yi discovered a huge change in himself, although he had been in high school for three years in high school, he didn't know how many problems he had done, and he remembered many things very firmly.

But after all, I'm a junior now, and I haven't learned these things for a few years, but when I look at the book, the speed is very fast, almost ten lines at a glance, but the content of the book is clearly remembered, and I can't forget it.

"It seems that the old man really didn't brag, this genetic optimization solution is really amazing, it can really develop the brain, and my physical fitness has increased a lot."

While reading the book, Qin Yi sighed at the magic of the gene optimization solution.

"Bragging, I need to brag~"

In his mind, inside the science and technology tower, the old man couldn't help but blow his beard and stare at his eyes.

In less than 10 minutes, I finished reading a thick book of high school math knowledge.

"Reviewing the old and learning the new, what the ancients said is still very reasonable, and learning high school mathematics from the beginning has a much deeper understanding of mathematics."

"Many people think that mathematics is useless, but in fact, mathematics is the real foundation of modern scientists, and without breakthroughs in the field of mathematics, scientists simply have no way to achieve in-depth development in other fields."

"The real effect of mathematics is not reflected in exam-oriented education, but in one's own mental thinking in the future. Learning mathematics is a process of exercising thinking from simple to complex, and many people feel that mathematics knowledge is useless in the future, and indeed if they are not doing related academic work in the future, they will basically not use much knowledge learned in mathematics. ”

But on the other hand, people who are good at mathematics are often able to think clearly, logically coherently, and be better at subjective initiative in dealing with many things. Many people use stupid methods to solve problems, they can often use their own thinking to hit the nail on the head, and will all kinds of reverse thinking, transformation thinking, with the accumulation of growth is very useful. ”

Qin Yi closed his eyes, constantly recalling the knowledge of high school mathematics in his mind, and then thinking about many of his classmates in high school, people with good math scores often think of good science grades, because science requires the brain to constantly think, it is very easy to understand, and it is difficult to understand it.

People who do not do well in mathematics often choose to study liberal arts, and many of these things are rote memorization and rigidity, which is very different from the activity of science.

"It seems that I still have to learn more mathematics in the future, exercise my thinking ability more, I originally felt that mathematics to learn high mathematics has basically been out of touch with the needs of reality, and now it seems that my understanding is still too superficial."

Qin Yi gently put down the mathematics, picked up the detailed explanation of high school physics knowledge and continued to look at it, Qin Yi also learned physics in high school quite well, and he also scored very high in the college entrance examination that year.

Revisiting the physics knowledge of high school again, Qin Yi learned it very quickly, turning a page in ten lines at a glance and a few seconds, and reading all the detailed explanations of high school physics knowledge in a thick book.

"Qin Yi, have you gained anything after reading it?"

In his mind, the old man was a little bored to chat with Qin Yi, Qin Yi finished reading the physics knowledge in high school, and the old man naturally knew very well the level of civilization development on this side of the earth.

"The harvest is okay."

Qin Yi smiled and nodded.

"Then I'll test you, do you know how to calculate the mass of the earth?"

The old man smiled, rolled his eyes and said.

"What's so hard about this, according to the law of gravitation, F = GMm/R^2, where G = 6.67*10^(-11), M is the mass of the earth, m is the mass of an object, and R is the radius of the earth. F=m*V^2 /R, and finally simplify M = V^2*R/G, V is the speed of the earth's rotation (knowing the radius of the earth can find the speed), and the mass of the earth can be calculated by bringing the data into it. ”

Qin Yi didn't care, the calculation of the mass of the planet needs to apply the law of gravitation, as long as he knows this, it is easy to calculate the mass of the earth, which is not difficult for Qin Yi at all.

"Don't read books, you remember these formulas, numbers, etc., well, but if you were asked to use this tool to measure the mass of the earth, would you be able to calculate it?"

In his mind, the old man didn't seem to be satisfied with Qin Yi's answer, so he smiled and said.

Then in Qin Yi's mind, a picture appeared, in which a thin wire lifted a slender magnetic needle from the middle, and two lead balls were placed not far from each other on both sides of the magnetic needle.

"This thing can measure the mass of the Earth?"

When Qin Yi looked at this thing, he was immediately confused, and he was a little confused.

"Of course, this thing is still something invented by your scientists on Earth to measure the mass of the earth, it is called 'twisted scale', and in the 18th century, your scientist Cavendish on Earth calculated the mass of the earth by relying on this thing."

The old man nodded very affirmatively, and then began to talk about the origin and function of the 'twisted scale'.

The basic principle of a torsion scale is to connect two weights of the same mass at a certain height at the two ends of a rigid rod, and hang them with a twisted wire through the center of the scale rod.

The scale rod can rotate freely around the twisted wire, and when the gravitational field is uneven, the gravitational force on the two masses is not parallel. The slight difference in this direction causes a small horizontal component in both masses and creates a moment that causes the suspension to rotate around the twisted wire until it balances with the torque of the twisted wire.

In the 18th century, scientists on Earth had been struggling with the problem of how to calculate the mass of the Earth, until 1798, Cavendish used a 'twisted scale' to finally calculate the mass of the Earth, which weighed about 60 trillion billion tons.

Because the mass of the earth was calculated, scientists soon calculated the density of the earth, and soon scientists used the same method to measure the mass of the sun, which is 300,000 times the mass of the earth, at 2 × 10³º kilograms.

Then the masses of other planets in the solar system were measured one after another, and the seemingly simple 'twisted scale' was able to calculate the mass of the huge cosmic celestial body, and the fundamental principle was the law of gravitation.

"I see, but why didn't we learn these things in high school?"

After listening to the old man's exquisiteness, Qin Yi realized something, and then frowned and thought, among them, with the physics knowledge of high school now, it is not a problem to calculate the mass of the earth by yourself, you must know that in the 18th century, scientists were already able to come up with a way to calculate the mass of the earth.

But I never thought about this problem, just rote memorization, constantly calculating in the sea of questions, although I already know a lot of things, but when I really want to calculate the mass of the earth, I am also smearing.

"In my opinion, there are actually a lot of problems in your current education in Huaxia, and the most serious one is exam-oriented education, which only looks at the results of the exams, and doesn't care about other things at all."

"Maybe in the exam, you are all very good, but when you really come to scientific research and exploration, you still have to cultivate more of your own ability to do it and think."

"Only in this way can great scientists be born, not nerds who only do questions."

The old man pondered for a long time, it has long been connected to the network of the entire earth, so it is very clear about the education situation in various countries and regions around the world, and it soon found many problems with the education model of Huaxia.

Today, just relying on Qin Yi immediately exposed a lot of problems, as a student from a top university like Huaxia University, not to mention the hands-on ability, it was very disappointed by this ability to think and explore independently.

"That's true~"

After listening to the old man's words, Qin Yi thought about it for a long time, and had to nod to admit it, although he could find a lot of opinions to refute the other party, but combined with everything he had experienced, he was speechless.

When I was in high school, I was very nervous about studying, and if I encountered the content that was not examined, the teacher would simply choose not to teach, and when I encountered a class that did not require an exam, such as music class, physical education class, etc., other teachers would habitually occupy the class, etc., all of which is enough to show that the current education is exam-oriented education.

It cannot be said that this kind of education does not have any advantages and advantages, but the disadvantages it brings must also be looked at directly, many things cannot be avoided at all, and the impact is also very far-reaching.

PS: The contract is done, and everyone can vigorously support a wave ~~~