Back to the Song Dynasty as a tyrant

Thus, the distance traveled by the ball in two seconds is increased by 9.8 meters compared with one second, and the distance traveled by the ball in three seconds is also increased by 9.8 meters compared with two seconds.

This results in a value of 9.8 for the acceleration due to gravity.

But for the ancients, it was unknown, and neither weights and measures nor timers could satisfy.

In order to speed up the innovation of the accuracy ratio of gunpowder dosage, he compiled a new weight and measure for Gewuyuan based on the weight and measure of later generations. (Chapter 253)

Later, I used coconuts as an inspiration for free fall, and that's all.

And the new timer clock is also made by Stereo.

If Zhao Ning is really required to do the actual operation, he has a greater advantage than Chen Gui, and he may come up with this value in advance.

But in this way, the role played by Gewuyuan is not as great as that done by itself.

A scientific experiment is not only about the result.

More importantly, scientific experiments are a set of strict cognitive and operational processes.

How to build a test site more precisely, what tools need to be made, and what unexpected things will happen during the experiment?

These must be practiced, not just opening your mouth!

After repeated practice, some scientific ways of thinking are obtained, such as induction and deduction.

You know, the biggest road blocking the development of science is not superstition.

Science flourished precisely in Europe, where religion was most prevalent.

What is the biggest obstacle to science?

It is taken for granted!It is taken for granted!It is taken for granted!

Breaking apart the divergent, illogical, taken for granted, and fluke thinking of ordinary people, and then reassembling them, is what scientific theories must go through.

These are things that cannot be taught by teachers, and must be done by yourself, constantly learning, thinking over and over again, and gradually formed.

After it is formed, compile it into theoretical knowledge and pass it on, so that students can continue to practice.

At least Zhao Ning believes that the successful measurement of the acceleration of gravity has played a role in reshaping the physical experiment process of the Gewu Institute, which is beneficial to other experiments in the future.

Science cannot be impatient, the foundation must be laid firmly.

"Good! Good!" Zhao Chun sat on a chair and applauded, with an excited smile on his face.

"Brother Chun, are you happy?"

"happy!"

"Why are you happy?" Zhao Ning asked.

"very funny."

"What's interesting?"

"I don't know, I just feel that what Chen Shilang did is very interesting."

Zhao Ning fondled his small forehead.

"Officials." Chen Shu said suddenly, "I have something that bothers me."

"What's the matter with you, but it's okay to say."

Chen Shu asked: "After we measure the acceleration of gravity, what can we do?"

"That's a good question." Zhao Ning smiled.

Seeing the gentle smile on Zhao Guanjia's face, the tension in Chen Shu's heart eased slightly.

Zhao Ning said: "When the ancients made tools, utensils, farm implements, and even waterwheels, the starting point was to solve the practical problems they faced. As long as the practical problems were solved, it would be fine."

The crowd nodded.

Zhao Guanjia said: "But solving the immediate problem does not mean that we really know why it can be solved, nor does it mean that I know how to improve next time."

This is the difference between science and technology.

Technology solves the immediate problems, but science studies the laws of things, interprets the laws of the world, and builds a human cognition system for nature.

Only when this scientific system is established can technology be iterated quickly, otherwise it is easy to get stuck in the same place.

Zhao Ning continued: "For example, why did our artillery fall to the ground when it was only more than 300 meters away, and why did our firecrackers fall to the ground when it was only less than 100 meters away?"

"It's because of the acceleration of gravity." Zhao Chun emphasized on the side.

"You're not right, it's because there is an invisible force pulling the cannon. What is the direction of this force?"

"It's straight down," the statement said. "We did a lot of testing."

"Vertical downward, how to calculate this force?" Zhao Ning continued, he felt as if he had the taste of a scientific master.

However, he still has self-knowledge, and he only has this bit of scientific common sense, but he is an ancient person who bullies the other party.

Chen Gui immediately said: "I remember the official said before that the heavier the object falls on the ground, the bigger the hole will be, which means the greater the force it receives. This gravity is related to the weight of the object."

Ding Peng blurted out: "Then multiply the weight by the acceleration of gravity, isn't it just gravity?"

Everyone is startled, you look at me and I look at you.

Zhao Ning didn't speak, and what Ding Peng said was correct, but the process was vague.

The reason why the process is ambiguous is that there are two concepts of gravitational acceleration, one is the motion unit and the other is the mechanical unit.

Gewuyuan is now talking about the concept of movement.

However, Zhao Ning did not remind him that Zhao Ning hoped that they would explore by themselves, perfect the scientific process, and open up branches and leaves by themselves.

Many things, don't rush for a while.

It looks green and lush in a short period of time, but it can't stand the consideration of time, and it will wither soon.

In fact, after calculating the acceleration of gravity, Gewuyuan will start to think about the acceleration of the movement of various objects in the next step, and the model of acceleration of gravity may quickly extend to other forces.

For example, the gunpowder explosion of artillery and muskets at the moment pushes the force of the projectile to be launched.

The greater the force on the object, the greater the acceleration, and the greater the acceleration, the longer the distance traveled per unit time.

The range of the artillery is also farther.

Of course, the most important thing is to perfect the theory of mechanics. Once the theory of mechanics can be gradually enriched, it will undoubtedly open the door to a new world in physics.

Chapter 1133 Qin Hui Father and Son (Third Change)

Xilin Helu was rather depressed. He scolded the embassy for half an hour, then packed his luggage and left Bianjing.

Before leaving Bianjing, I drank several glasses of water, and my mouth was really dry.

Damn Zhao Guan's house, I've been waiting for you here for so long, yet you haven't seen me!

Let's see!

Bianjing City is still as prosperous as ever, or in other words, more prosperous than before.

After the ice and snow melted, the construction of a new city outside the city started again. A large amount of wood was on the road, and the brick kilns by the Yellow River continued day and night.

Houses are rising from the ground.

New commercial areas, vegetable markets, and residential areas are scattered in a well-proportioned manner.

What's interesting is that in the new city, there are also many big cannibals with foreign faces. These people came from the sea, and soon extended their tentacles to Bianjing and began to take root here.

Today, major headline newspapers in Bianjing are still reporting on the border affairs.

Whether it was the victory in Liaodong or the destruction of Xixia, they all demonstrated the great martial arts of the Song Dynasty.

For a time, the people were passionate.

There were many excited voices, calling on the imperial court to go northward with the power of victory, regain Yanyun, build the Great Wall, and completely solve the troubles of the Jinren.

Hearing that Yue Fei was confronting the Jin army in Yizhou at this time, many people began to praise and praise Yue Fei vigorously.

Yue Fei once again became the God of War in Song Dynasty.

"I have said long ago that Yue Fei is extraordinary, he is the nemesis of Jinren!"

"Yue Shuai is invincible!"

"Yue Shuai is our great hero. If anyone dares to say that Yue Shuai is wrong, I will fight him hard today!"

"..."

The people are all concerned about when the Northern Expedition to Yanyun will happen, but at this time the official circles in Bianjing are focusing on King Kang's return to Beijing.

Kang Wang's return is not a simple recall.

He has a major connection with the private loan case, and Kang Wang's status is extremely special, coupled with the fact that the crown prince has not been established, countless officials are naturally moved upon hearing the news.

For a time, an undercurrent surged.

At noon on this day, when the sun was shining in the early spring, a gorgeous four-wheeled carriage stopped at the gate of the Qin Mansion.

A young man got off the carriage and walked into the Qin residence.

The youth is Lin Yifei, Qin Hui's illegitimate son.

Knowing that Lin Yifei was coming, Wang's face was very ugly. Few of the servants of the Qin family dared to meet Lin Yifei, not even anyone who served tea and water.

Qin Hui came out and said, "Officer Lin is here as a guest at the mansion, isn't there anyone serving tea?"

"Qin Xianggong, madam..."

"Official Lin is my guest! What does it have to do with Madam, go get ready!"

"Yes!"

Although Qin Hui is so strong at this time, if Wang Shi is by his side, he must not dare to say this.

The Wang family is notoriously domineering, and Qin Hui is a strict wife.

"Qin Xianggong, the official has only talked about business these days, so there is no need to have tea."

"Come with me."

Qin Hui led Lin Yifei to the study.

At this time, Qin Hui's eyes showed love and pity.

"Is everything settled?" Qin Hui asked with concern.

"It's all been dealt with." Lin Yifei's expression became sad, "I just don't know..."

"That woman is already a prisoner of the imperial court, you'd better forget about her completely!"

"But she helped me a lot." Lin Yifei became excited.

"She is useless to you now, and I can't help you. I finally cleared your suspicion with her. You'd better not have any contact with her!"

"understood."

"What's the matter with you, just tell me directly, it's safe here."

Lin Yifei thought for a while and said, "The Jinren want to negotiate a peace now."

"I know." Qin Hui closed his eyes, as if resting his mind.

"But Xilin Helu left Bianjing." Lin Yifei said again.

"I also know that the officials don't want to see him."

Lin Yifei said: "It seems that the officials are planning to use the prestige of victory to attack Yanyun in the north!"

"Not necessarily." Qin Hui said, "I hunted with the officials yesterday and tried them out. I advocated that the country immediately send troops to the north to attack the Kingdom of Jin, but the officials did not express their views."

"So, the officials are still worried?"

Qin Hui said: "Although Zhang Shuye is sick at home, his attitude is to rest and recuperate, and it is not appropriate to use troops immediately. Zhang Shuye's attitude should have a great influence on the behavior of officials."

"So, maybe a meeting and?"

"There are many voices for a truce between the DPRK and China." Qin Hui said, "Including Li Ruoshui, who has always been tough before, also wants a truce."

"The conditions offered by the Jinren are that as long as we can help them negotiate a truce, the business lines of Yanyun and Liaodong will be opened to us. These are hidden from the imperial court, and someone will help us in handling the business. "

Qin Hui was silent.

"The relationship between Song and Jin in the future may be like the relationship between Song and Liao in the past." Lin Yifei said, "Before Song and Liao, there was a lot of commerce among the people. Now the court is trying to encourage business, and we can just take the opportunity to make money. With more Money, you can buy more people when you are in court."

"The golden people are cunning, you talk to them, don't leave any clues."