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Of course, there is another point. The two of them are very curious about how to use the object that Cheng Chubi gave to these two mathematics masters, which he called an abacus.

Cheng Chubi took the book and was surprised when he saw the page that Zu Guang had opened.

"You have solved the previous questions?"

Seeing Cheng Chubi's surprised look, Zu Guang and Hu Yonglin's faces couldn't help showing a trace of triumph.

But when their eyes fell on the book again, they saw that they had spent so many days waiting for others, and they were still stuck in the first third of the book.

That trace of complacency disappeared instantly, Zu Guang stroked his short beard impressively.

"It's just a fluke..."

Cheng Chubi took the manuscript for solving the problem handed over by Hu Yonglin, compared it with the title, and praised it.

"No, it's not bad. After all, the two teachers are not very familiar with the application of these numbers and formulas..."

"As for the problem you encountered, what do you think?"

Zu Guang considered the terms and explained. "Zu always felt that this topic was too profound.

Zu has never considered that this throwing stone can actually be calculated..."

Zhang Wenchang on the side couldn't help but interject. "Zhang admits that he has little knowledge, and he has been thinking about it for a long time, and feels that this problem is simply unsolvable."

Cheng Chubi looked at the three people in front of him, smiled and patted the book in his hands.

"In fact, for several people, this question is a bit too big. To be precise, it is not a math question, but a physics question."

"Physics problem?"

"Exactly, the so-called physics is a discipline that studies the general laws of the movement of matter and the basic structure of matter.

The most basic motion forms and laws of all matter ranging from the universe to elementary particles. "

"And its theoretical structure is mainly to make full use of mathematics as its working language."

Cheng Chubi sat down, took a piece of paper in his hand, and picked up a quill pen. According to the question, he began to list the parametric equations...

Everyone looked at him blankly, watching him there while explaining the role of the parametric equations.

And the calculation formula of flight time, range calculation formula, launch angle calculation formula...

And I also drew a two-dimensional curve of the trajectory of the stone in the comparison...

In short, everyone is stunned in the physical ocean.

And Cheng Chubi also picked up the abacus, and flexibly moved the abacus with his fingers, crackling it, and finally wrote down the results.

#####

After Fang Jun was stunned for a long time, he was the first to ask the question in his mind.

"Brother Chubi, what is the use of calculating this for your physics problem?"

Cheng Chubi gently poked his finger and explained the result obtained after checking the calculation.

"Did brother Xian had forgotten that in my Datang's ordnance, crossbows, ballistas, and bows can all be used to obtain their range based on these formulas."

"In this way, if Datang wants to develop better, stronger, and more efficient long-range weapons.

You can also make it after repeated calculations like this..."

"From the point of view of physics, let us know that we must be objective and fair in dealing with things, and any conclusion has its conditions and scope of use..."

Zu Guang, Zhang Wenchang, and Hu Yonglin looked at Cheng Chubi who was talking about it in a daze.

I felt more and more that the knowledge they had learned was a bit too shallow compared with Cheng Chubi.

After a long time, Zu Guang breathed out a suffocating breath and respectfully saluted the crown on his head towards Cheng Chubi.

"Thanks to the principal for waiting for me to solve my doubts. After listening to the principal's words, Zu only understood what physics is. For physics, everything has its reason..."

"I don't know, I don't know if the president will open this department in the university, or Zu Mou, ha ha..."

Looking at this mathematics master who is munching on words in front of him and is full of eagerness for physics.

Zhang Wenchang and Hu Yonglin also looked at Cheng Chubi eagerly, as if they were afraid that he would refuse.

"If a few people are willing to learn physics, it would be easy. When I have time, I will compile some physics and study with a few people."

"If there is a chance in the future, you may have to bother you to teach the teachings for the students, so that more people can understand physics."

The three of them couldn't help being overjoyed, and once again bowed to Cheng Chubi, and Cheng Chubi hurriedly paid it back.

Next, I curiously asked about the abacus that Cheng Chubi had given them, and got the guidance of the practical master Cheng Chubi.

Coupled with their ingenuity, they soon understood the magical effect of this abacus.

Especially these three mathematicians are excited and don't know what to do.

"I think Mr. Zu has studied planning since he was a child. It has been more than 20 years. I have always felt that planning is a bit too cumbersome, but there is no more convenient method."

"Principal Cheng, your research and development of this thing is simply a weapon I am waiting for for math, baby."

Zhang Wenchang's eyes were a little green, and he couldn't wait to reach out and grab a good treasure. It's a pity that everyone is a gentleman, and they are embarrassed to start.

Zhang Wenchang could only look at Cheng Chubi and squeezed a pleased smile.

"Principal Cheng, I wonder if Zhang can copy such a mathematical weapon?"

"It turns out that Teacher Zhang is also a great mathematician, this is really a negligence of Cheng."

"I have prepared everything for the students in the mathematics department of our school, and there are extras. I will have someone give it to Teacher Zhang as well."

#####

After the three mathematics masters left, Li Ke approached Cheng Chubi with a grimace on his face.

"Brother Chubi, since you have such a good baby that is conducive to math learning, why don't you tell the little brother?"

"You didn't ask again." Cheng Chubi gave the guy a blank glance unwillingly.

The abacus thing Cheng Chubi had long been out, and the old Cheng's accountant used this thing.

Now that it is considered that since my university wants to engage in mathematics, physics and chemistry, it is naturally indispensable for calculation tools.

Cheng Chubi has made dozens of them, and they will be promoted among students at that time. The reason why they are brought here today is ~lightnovelpub.net~ which has the obvious meaning.

The purpose is to let these teachers learn first, and then teach students well.

"Then I want one too. My tent, my little brother, will definitely be happy to use this stuff."

"And me, I want too." Although Fang Jun didn't look like Li Ke, he was not stupid anyhow, so he shouted immediately.

At this moment, Cheng Chubi and Li Ke both cast their gazes on Fang Jun's body.

"I said, Brother Jun, what do you want this thing to do?"

Being stared at by these two guys made Fang Jun a little stressed, scratching his head, Fang Jun still told the truth.

"I learned it, so I can teach my dad."

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