My Daming New Empire

Although Chen Cheng is considered a relatively outstanding talent in this era, he never thought that Taoist priests could form a discipline by refining alchemy.

Therefore, although the Chemical Research Institute has been established, these Taoist priests and a few dyeing craftsmen are still concentrated in the Iron and Steel Research Institute, and there are no hard research tasks.

Anyway, with the research funds provided by Zhu Zhanji, these people can study what they like without being picky or feeling wronged.

After receiving Zhu Zhanji's order, they were all a little dumbfounded, because they all knew the questions Zhu Zhanji raised, and they could even see them on a daily basis, but none of them could tell the truth. out.

In the past few days, they have also been in a panic, flipping through books and asking people, wanting to know how these phenomena are formed.

They also prepared many plausible answers and wanted to wait for Zhu Zhanji's big exam.

But after Zhu Zhanji came, he just roughly asked everyone about their working environment, living environment, and working status, and then asked people to take out some glass bottles and copper pipes, as well as some red phosphorus they saw every day. glue.

Except for Zhu Zhanji, no one knew what he used these things for, so he could only do it himself and prepare to test it for him.

(Which experiments have not been decided yet, do you have any suggestions?)

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He filled a bottle with water and marked it out.A bent copper pipe was inserted into the water,

He inserted another copper pipe into a bottle cap, and there was a small hole in the middle of the cap. Zhu Zhanji inserted the copper pipe, and then used glue to seal the gap.

Ma Di, who was helping at the side, then put a piece of duck intestine between the two copper pipes. Zhu Zhanji first blocked the copper pipe on the side of the gas cylinder with his fingers, and asked Ma Di to fill the copper pipe with water.

Ma Di filled the copper pipe with water and quickly tied the duck intestines with a thread. At this time, Zhu Zhanji leveled the copper pipe and let go of his hand, but the water did not flow out.

Zhu Zhanji asked at this time: "You can see that although the copper pipe is filled with water, the water will not flow out after the duck intestines are tied tightly. What is the reason?"

Of course, everyone couldn't tell, they just watched curiously.

There is also a small hole in the cap of the empty bottle, and a flint is connected to the lower end of a small stick.

And there is a hanging basket made of copper sheet under the bottle cap, and there is a millstone and lead wire next to the hanging basket.

Zhu Zhanji installed a sufficient amount of red phosphorus in the hanging basket, carefully adjusted the position, put the cap on the bottle, and finally sealed the bottle mouth.

No one knew what Zhu Zhanji was going to do. Only Ma Di, his assistant, was very excited. After applying the glue, he anxiously waited for the glue to solidify.

Zhu Zhanji said: "We all know that there is air around us, but we don't know what the air is made of and how much it weighs. Today's experiment is to know how much air in the air is conducive to combustion. Yes, how much proportion and how much weight is there.”

Because Zhu Zhanji is the grandson, and because everyone takes his job, no one directly refuted his words.However, from the looks of everyone, it can also be seen that most people still don't take it seriously.

It is really a fantasy to measure the invisible and intangible air only by the simple device of these two bottles.

But Ma Di firmly believes in Zhu Zhanji's words, because in the past few months, Ma Di has been learning new things and new ideas that Zhu Zhanji instilled in him at all levels.

From bearings to machine tools, and then various new industrial technologies developed by extension.There is also the hang glider that can carry people to the sky. Although Ma Di is still young, he is already considered the top chief engineer.

With the accumulation of mathematics, the connection between various components, including the calculation of bearing strength, Ma Di has surpassed Zhu Zhanji.

In the past few months, he has led a team to complete the production of nearly a hundred hang gliders, all of which have passed the test of the sky.

With a lot of contact with aerodynamics, Madi is also one of the people who know the most about air, because what makes hang gliding go to the sky itself is the direction of his current research.

He is also the one who most firmly believes that air has weight.

As the ninth-rank ambassador of the Ministry of Industry and Armaments Bureau, Ma Di, 16, is not considered high in rank.Because many nobles and civil servants' children are born with a corresponding title, which is far higher than the ninth rank.

But those are just lords, and Ma Di is the youngest among the official officials in Ming Dynasty.

Zhu Zhanji looked at Ma Di, he looked at the glue knowingly, and said, "Your Highness, we have to wait a little longer."

Zhu Zhanji nodded and said, "Then tell the ministers about the iron ball test I asked you to do."

After all, Ma Di was young. Although he was in front of the officers, he did not have the slightest fear. He nodded excitedly, and then asked: "My lords, do you know why the fruit on the tree will fall to the ground when it is ripe, but Isn’t it floating in the air? The leaves will fly with the wind, but finally fall to the ground? There is also a ten-jin iron ball and a one-jin iron ball that fall at the same time, which one will fall to the ground first?”

Although his position is low, his uncle is now a middle-level official of the Ministry of Industry, and his father has directly joined Zhu Zhanji and is serving Zhu Zhanji.

More importantly, his younger sister married Zhu Zhanji and is now one of the six good ladies, and he is deeply loved by Zhu Di and Zhu Zhanji.

So although he was a little more lively, no one blamed him.One of the old assistants who had a good relationship with Ma Zhicai said with a smile, "Of course the ten-jin iron ball fell to the ground first."

Ma Di smiled and said, "No, I tried several times myself, and they all landed almost at the same time."

"why?"

Ma Di shook his head and said, "I don't know either. Your Highness said that the inertial acceleration was not enough, so they landed at the same time."

Chen Cheng licked his beard and asked, "Then why does everything in the world fall to the ground?"

"That's because of the existence of gravity. Our earth revolves around the sun, and the moon revolves around our earth, all because of the existence of gravity. Otherwise, we live on a sphere, why don't we fly away? "

It is difficult for people of this era to accept these concepts. Although most people have seen the globe from a distance, and have vaguely accepted that people live on a big sphere, such a lot of knowledge is still too overwhelming to accept. .

Ma Di continued: "According to His Highness's instructions, the foundry is casting a hollow iron ball. When the iron ball is ready, His Highness said that we will all know the existence of atmospheric pressure."

Another asked: "What is atmospheric pressure?"

Ma Di was a little stuck all of a sudden, and he didn't know how to explain it. He looked at Zhu Zhanji for help.

Zhu Zhanji smiled and said: "I wonder if this experience has seen beheading? After a person's head is cut off, the blood all over his body will spray several meters high from the neck. This is the reason for the atmospheric pressure."

Zhu Zhanji spoke, even if there were different opinions, no one would refute at this time.Although more people believe that the blood spatter is so high, I am afraid it is because of the human body.

Zhu Zhanji continued: "Put a log under the water. The deeper the water, the greater the water pressure and the greater the buoyancy. Since we are surrounded by air, of course the air will also have pressure."

"But why don't we feel it?" said a mid-level official.

Zhu Zhanji asked: "Does the fish know that there is pressure in the water?"

At this time, Chen Cheng said: "I can prove this point. I have been to the Western Regions many times, and I have also been to the Western Regions Plateau. It is not suitable for us Han people to live there. Many people have difficulty breathing and have a splitting headache after going up. Only when you are used to that. People in the surrounding environment can't feel it. Similarly, when people from them come to our place, they will always feel sore and weak, unable to move, and they need to adapt to move normally. I don't know the reason before, but now that I think about it, it should be It must be because of the air pressure!"

Of course Zhu Zhanji knew why, but he couldn't say it directly.Looking at Maddy, he asked, "Is the glue dry?"

Maddie nodded and said, "Okay."

"Then let's start, be careful, don't hurt yourself."

Maddy nodded excitedly, holding the small wooden stick above the gas cylinder cap in his hand, and manipulated the flint to grind.

After rubbing back and forth several times, the fuse and red phosphorus were finally ignited, and then the red phosphorus in the cylinder began to burn violently.

Everyone saw the white smoke rising, and soon there was nothing inside the gas cylinder.

Everyone's eyes were fixed on the glass bottle, and Ma Di's eyes were unblinking. The burning caused by the red phosphorus ended quickly, and then cooled down very quickly.