Diqin Designer

Chapter 248 Liuying Palace Hemisphere Experiment

After taking back the hemispherical shells from the students, the people around him began to perform some operations that the students could not understand. They first filled the hemispherical shells with water and put them together, and then used a device that they could not understand to pump the water out of the shells...

Did this cause the hemispheres to become inseparable? If so, why did this happen?
The students were full of doubt and confusion. The people next to them seemed to know that they were curious and confused, so they handed them the two balls that were put together and asked them to try again to see if they could separate the balls.

However, this time, unlike the previous time when they were able to separate the balls easily, they used a lot of strength but were unable to separate the two balls into four hemispherical shells again.

But why is it that when those people were operating the two balls, they were just watching and it didn't seem like they were doing anything very special, pouring water, combining the balls, pumping water, and then they couldn't get the balls apart?
This aroused great interest among the students. They refused to believe it and could not separate the two balls.

At this time, Li Nian's voice came: "If you feel that you don't have enough people or strength, you can find others to help pull the ball away. The buttons on it are used to fix the rope."

The people next to them also handed the students ropes at the right time. The students tied the ropes to the buckles outside the ball shell and called on others to help pull the ball together.

The students were ready to go, and more than ten people were arranged on both sides of each ball, which was equivalent to more than twenty people pulling one ball together. This wave would definitely be able to separate the two balls!

Seeing the students pulling out two balls again, the accompanying teachers showed admiration in their eyes. They had also seen Li Nian asking people to do this experiment, and some people had even participated in it personally.

Before, they, like these students, had never thought that the two balls held together by hemispherical shells would be so difficult to separate, and the amount of strength required was simply outrageous.

Things in the world are really as Master Li Nian said, strange, magical and bizarre. Many things are not what they thought, nor what the other scholars thought. Who could have thought that the ball would be so solid because of the invisible force of the air around them.

The students began to pull the balls, using the greatest strength they had ever exerted in their lives, but unfortunately the two balls did not move at all. Even if they exerted as much strength as if they were drinking milk, they remained motionless and showed no sign of separating.

The students were shocked. With so many of them, they couldn’t separate the two balls?

That meant that they were not strong enough to separate the two balls, so they continued to add more people. Dozens of people were added, but they still could not separate them. They added more people, but they still could not separate them...

Even when the number of people reached over a hundred, they still could not separate the ball.

Some students have begun to suspect whether those people have tampered with the ball, otherwise why would so many of them be unable to separate the ball?

Seeing that the students were not convinced and wanted to continue to add people to pull the ball, Li Nian said: "Stop, put the rope on the horse!"

Li Nian gave the order, and they had no choice but to do as he said. When they saw the rope on one of the balls being put on the horse, they realized that these horses were used for this purpose.

At the beginning, three horses were harnessed on each side of the ball, a total of six horses started to pull the ball, but unexpectedly, none of the six horses could pull it out.

They added more horses until there were six horses on each side, a total of twelve horses, before they finally pulled the ball apart. There was a loud "bang!" and the bronze ball was separated.

Looking at the twelve horses standing on the field and the two hemispherical shells that fell on the ground, many students were surprised, puzzled and curious. It took the twelve horses to pull it apart, no wonder they couldn't. But why did it take so much force to separate these small copper balls?

It is obviously just two hemispherical shells put together, not a complete forged copper ball, so it should be easy to separate.

Could it be because of the operations those people performed when putting the ball together? But what was the reason behind it? This was indeed interesting and beyond their expectations!

Li Nian held another copper ball in her hand. "Someone might be wondering if someone did something when putting the ball and shell together, which made it difficult to separate them?"

"But in fact, there is no trickery. If you don't believe me, you can come and see for yourself the difference between the undivided copper ball and the one that was divided."

As Li Nian spoke, he unscrewed the air nozzle on the ball, and the ball that was difficult to separate in the hands of the students was immediately re-divided into two hemispherical shells.

A group of students put the four hemispherical shells together and observed them, and found that they were not much different from what they had seen before, and there were no special mechanisms or devices added.

Since there was no special trick, it must be that there was something strange about adding water to the ball and then pumping out the water, and water played an important role in it.

A student asked Li Nian, "Excuse me, sir, from what I see, this ball is nothing special, why is it so difficult to tell apart?"

Li Nian smiled and said, "In fact, the reason why the ball is difficult to separate is not because of the ball itself, but because of the air everywhere around us. It exerts a huge force on the ball, like two arms pressing the ball shell firmly together."

A student asked: "Since there is such a huge force, why can't we feel it?"

Li thought: "This force can be called 'atmospheric pressure'. It is invisible to the naked eye, but the reason why we can't feel it is because the pressure in our body is balanced by the atmospheric pressure outside, which is equivalent to nothing for us."

"But in fact, it is almost everywhere. For example, the air we breathe in and out, the wind between heaven and earth, are all related to atmospheric pressure. Even the way we light a fire and boil water is related to atmospheric pressure."

Another student seemed to understand something and said, "We were able to easily separate the spherical shell just now because the pressure inside the spherical shell was balanced with the external atmospheric pressure, which was equivalent to zero."

"But after filling the spherical shell with water and then pumping out the water, this balance is destroyed, the pressure inside the spherical shell is reduced, or even eliminated, and the effect of the external atmospheric pressure naturally appears on the sphere."

Li Nian glanced at the student who was speaking and said, "That's right. The purpose of filling the sphere with water is to remove the air inside. However, the water inside will still produce a pressure that is balanced with the outside world, so the water must be pumped out afterwards so that there is neither air nor water inside. Only in this way can the power of atmospheric pressure be revealed!"

The students nodded their heads after hearing this. So that's how it was. It was so magical. If they hadn't seen it with their own eyes today, or even experienced it personally, how would they have known that there were such interesting things in the world?
Li Nian continued: "Some of you may be thinking, what's the point of learning and knowing all this? It seems that there is no practical use, but in fact there are many useful places."

"If we can better observe the weather, strong winds along the coast will cause floods and trees and houses to fall. If we can know in advance and inform the people, wouldn't it reduce the losses? For example, if we go to some dangerous areas and find that the danger is related to atmospheric pressure, we will know how to deal with it. If we want to fly in the future, we also need to know atmospheric pressure and have a lot of dealings with the air."

(End of this chapter)