my scientific age

Chapter 130 I Can Occasionally Stop By
Yu Hua did not relax after the successful experiment to produce nitroglycerin, because the next step was the most dangerous situation in the entire development process of single-base propellant. Taking out the ice bucket, the whole person walked to the experiment placement area on the left.

Step steadily and move carefully.

The whole process must be extremely subtle and stable, and there should be no shaking. This cup of nitroglycerin with a mass of about 2 kilograms is enough to destroy the entire laboratory, and its power is extremely high.

The solemn and serious Yu Hua was slightly nervous even with Xu Rui, always paying attention to Yu Hua's movements.

"Phew... it's all right, Ruizi, don't touch this bottle casually. Any vibration or impact will make it explode. It is very unstable. The explosion power is equivalent to a cannon shell." , Yu Hua carefully sealed it, and then he breathed a sigh of relief, motioning Xu Rui to come over, and after Xu Rui walked over, he explained carefully.

The time has reached 10:30 in the middle of the night, and the goal of producing nitroglycerin has been successfully completed today, and Yu Hua is not going to continue the research.

The meal has to be eaten one bite at a time, and there is no rush to make explosives.

Nitroglycerin is very stable at room temperature, has high thermal stability, and will not explode due to temperature changes.

"Cannonballs?!" Hearing Yu Hua's words, Xu Rui looked at the beaker in the experimental product storage area, his eyes changed, and he immediately understood what his husband was studying.

This is... dynamite!
Then a small bottle of things, the explosive power is equivalent to the shell of a cannon, Xu Rui's mind was deeply shocked, and he could not imagine why this bottle of things contained such terrifying power.

"Okay, I'll be here for the time being, let's go back first, then you will be responsible for boiling the cotton, removing impurities as much as possible, and drying it to make refined cotton. Is there any problem?" Yu Hua smiled after seeing Xu Rui's expression. , then arranged.

Cooking cotton involves nitrocellulose, the structural main body of a single-base propellant.

The scientific name of nitrocellulose is cellulose nitrate, which is obtained by esterification of cellulose and nitric acid. The hydroxyl groups of each chain segment of cellulose are esterified into nitrate groups under the action of nitric acid.

Nitrocellulose, also known as nitrocellulose, digested cellulose, etc., is the main structure of the single-base propellant.

The first step in producing nitrocellulose is to produce refined fiber, and cotton is the best natural source of refined fiber, which is cheap and widely available.

Of course, if cotton is not available, silk, bark, green hemp, straw, sugar cane, and any plant containing cellulose can also be used.

"No problem." Xu Rui shook his head.

"Let's go." After receiving Xu Rui's reply, Yu Hua nodded with satisfaction, picked up the pen and the experimental notebook for recording precious experimental data, and left the laboratory with Xu Rui.

When refined cotton is available, Yu Hua will be able to configure nitrocellulose to complete the first single-base propellant technology.

This single-base propellant formula comes from a military boss at station B. The entire video contains an extremely detailed development process, which can be described as a hands-on teaching. The formula is mainly composed of two kinds of nitrocellulose with different nitrogen contents, and the comprehensive performance is extremely excellent.

When Yu Hua was interested in chemistry, he was fortunate enough to watch this video and collect it.

However, when I was about to watch it again after two days, the video was gone.

Yu Hua believes that this excellent single-base propellant from later generations will definitely be able to play its own light in the upcoming war of resistance.

After the two left the laboratory, they went their separate ways. Xu Rui went home, and Yu Hua returned to No. [-] Middle School.

It was quiet at night, and no one was on the road.

About ten minutes later, Yu Hua returned to No. [-] Middle School. At this time, the library was closed. There were many students in the school passage, most of them from the third grade. The graduation exam was approaching. In order to work hard and work hard, Yu Hua kept calm, quietly merged into the crowd, and set foot on the road back to the dormitory.

"Snapped!"

The whole person took a few steps, and suddenly, the shoulder was lightly tapped.

Yu Hua was stunned for a moment, a little puzzled, and turned his head to see Lin Wan in winter clothes on his side, holding a full English textbook in his arms, smiling and spitting out white mist.

"Jin Yu?" Yu Hua was a little surprised when he saw Lin Wan.

Lin Wan spit out a mouthful of white mist and said with a smile, "Looking at the back, I look familiar, but I didn't expect it to be you. Did you just come back?"

"No, I have something to do tonight. I came back from Tsinghua Garden at noon today. How have you been these two days?" Looking at Lin Wan's peaceful and gentle smile, Yu Hua couldn't help showing a smile, nodded and asked with concern. .

Lin Wan held the book, shook her head, and said as she walked, "As usual, I have learned everything that should be learned, and I will wait for the city-wide joint examination in May."

"If I remember correctly, you're going to be a recommended student at Peking University, right?" Yu Hua followed his footsteps and asked thoughtfully.

Lin Wan nodded: "Well, Peking University, I've always wanted to go to Peking University. In the future, you will be in Tsinghua University, and I will be in Peking University. I can still visit occasionally. How about you, how have you been studying recently?"

"Like you, the old way, I only learned the real variable function today." Yu Hua smiled.

"talent?"

When Lin Wan heard this, the corners of her mouth twitched slightly, and she couldn't help but glance at Yu Hua, is this guy speaking human words?
In high school, I have learned the real variable functions at the university level, and I still have the word 'cai'.

"I'm here, Jin Yu, we'll talk next time, I'll go back first." Yu Hua smiled slightly at Lin Wan's rolling eyes, and walked to the door of the boys' dormitory, then said goodbye to Lin Wan, without mentioning anything to send Lin Wan to the girls' dormitory door, because it is not allowed at all.

Lin Wan nodded and smiled: "Goodbye, continue to encourage them together."

"it is good."

Yu Hua smiled.

After the words were finished, she turned to face the brightly lit boys' dormitory, while Lin Wan smiled and looked happy, and went to the girls' dormitory.

Go up the stairs and come to Erjia[-].

Yu Hua pushed open the door and entered. The lights in the room were bright, and everyone was studying at their desks.

Seeing this scene, Yu Hua did not disturb everyone, and returned to the bed lightly, putting the experimental notebook on him into the personal locker.

Immediately afterwards, the whole person took a new notebook, and then took their place. Zhou Yuan, Liu Tao and others heard the movement, looked up at Yu Hua, and continued to study.

The room was filled with the sound of rubbing pens and papers.

Sitting upright, Yu Hua's face was calm, he held a pen in his right hand, opened the first page of the notebook, and wrote down a series of formulas and English letters.

This is the matrix mathematical model and calculation formula of Hongmi. Yu Hua, who has personally participated in the core work of deciphering Hongmi, clearly remembers every content.

After writing the matrix mathematical model and calculation formula, Yu Hua began to write two codebooks by default. Tomorrow morning, these top secret things will be sent to Zhang San, a 'patriotic scholar'. Lin Wan from Peking No. [-] Middle School.

As for when Lin Wan can receive it, it depends on the efficiency of the Beiping Post Office.

Yu Hua has done everything he can, and everything is up to God.

……

(End of this chapter)