I do research in ancient times

When Ning Fei arrived at the small assembly hall, the school was already surrounded by people from the third floor and the third floor.

Ning Shaozi himself was also very surprised by this.His original intention was to let all the students in the school come to see the silver mirror experiment, but unexpectedly, everyone from the whole sect came.

But it's normal to think about it. After all, Mozong is an academic group gathered by a group of people who want to study technology. Those who engage in scientific research are very curious, which is a good thing.

"Stay far away, everyone, and open the doors and windows."

Ning Fei exhorted.

"There may be a smell later. Smelling too much is not good for your health. Try to keep the room well ventilated."

Hearing what he said, everyone dispersed obediently.

But no one was ready to leave. The disciples of Mozong had absolute confidence in Juzi. He could create a man who could be safe and sound, and what he dared to do would not be too dangerous.

Some of the female workers and students who came to study had the intention of retreating, but no one left around, and they were embarrassed to leave, so they just stood back as much as possible to keep a distance from the moment in the center of the venue.

"Then get ready to start."

Ning Juzi checked the status of the reagents again, then nodded to his two assistants Liu Tong and Liu Tie.The two immediately lifted a table up, and quickly placed all the tools needed.

The people below were dumbfounded.

These bottles and cans, as well as various cups and tubes made of transparent crystals, what are the things inside! ?

Ning Fei gave a brief introduction to everyone first.

Of course, the reagents cannot be described according to the modern chemical names. There are too many things to explain in this way, which is equivalent to starting the class from the beginning, and it is not clear for a while.

The main purpose of his doing this is to stimulate everyone's interest in science, not to tell everyone about the history of chemical development, so all the steps are simplified, replacing the original name with the source, as easy as possible to understand.

The silver nitrate solution was prepared before, but Ning Fei simply demonstrated the reaction process.Hearing that there is silver dissolved in it, all the people watching the excitement below gasped in unison.

"My God! It turned into silver and went in! It's a precious thing!"

"Silver water! Is this the silver water that is said in ancient books!? It really exists!"

"Oh my god! How much does it cost to make a mirror out of silver to get back the cost!?"

Some people talked a lot, while others opened their eyes wide and became more focused.

For example, one of the cousins ​​who came to Mozong to study with Brother Twelfth now has his neck stretched out, looking inside with his feet on his feet.The young boy wished he could squeeze away the old men standing in front of him, and get closer to the table to take a closer look.

His first name is Feng Xi, and he is the thirteenth brother in his family. He is just the age full of curiosity about the world. He wants to find out the root of everything he sees, and he always talks about "why" all day long.

The elders and brothers in the family were so annoyed by him that they all walked around when they saw Shisan.Feng Xie's reputation at home is similar to that of his twelfth brother Feng Kang, who is regarded as a lousy kid who hates cats and dogs and does not do business properly.

This time, the three of them were packed and thrown out of Ding'an City, and it was not without Feng's family's attempt to clean up.

"Brother, brother, what I just heard from Brother Xiaofei is to paste the melted silver water in the bottle on the glass, can that work?"

"What kind of water is that water? Why can the silver be melted? Where did the melted silver go? Did it turn into silver water? Can the silver come back after the water is boiled dry?"

Thirteen tugged on Twelve Lang's sleeves, and asked a series of questions in a low voice.

Twelve Lang felt a headache.

He didn't like to play with this talkative cousin before, this kid always asked him questions that he couldn't answer, which made him very undignified as a brother.

After thinking about it, Twelve Lang imitated his own brother and hit his cousin hard, trying to make him submit by force.

"What are you asking? It's okay if you don't see it! You're the only one who talks too much!"

"Brother Xiaofei said yes, then he will definitely do it."

The thirteenth cousin covered his forehead, his eyes were still full of doubts.

"But why does it work? A few days ago, the little teacher in the school didn't heat water to turn it into gas, and freeze it to turn it into ice. Isn't it the same with silver?"

Twelve Lang doesn't remember anything about steam ice. He was dizzy when he was in chemistry class, his ears were buzzing, and his mind went blank.

He can understand every word Mr. Xiao said, but he doesn't know what the combination means, just like listening to his grandmother chanting scriptures.

He rolled his eyes at his cousin.

"Go, go, there are so many questions!"

"Also, don't call me Brother Xiaofei, brother Xiaofei, does Brother Fei know you very well?"

Thirteen was silent.

It's not that he doesn't want to refute, but that Ning Juzi on the stage has already made new moves, so he doesn't have time to talk to Brother Twelve!

Ning Fei on the stage opened the sealed pot and slowly dripped the ammonia inside into another pot containing silver nitrate solution.In order to ensure the success of the experiment, silver ammonia needs to be prepared immediately after use, and the smell of ammonia water is a bit pungent.

Some people with a sensitive sense of smell immediately retreated, but there were also those who were bold enough to squeeze forward.Fortunately, only a small amount is used, and the windows are opened to ventilate the room, which is still tolerable.

Next is to pour in the glucose solution.

Ning Fei was operating here, and Liu Tie and Liu Tong on the other side were not idle either.The two cooperated to clean the square glass plate with soap, wipe it dry, and then apply grease to the side that does not need silver plating.

This is the experience they summed up after the previous operation mistakes. Grease can prevent the plating solution from flowing down, polluting the non-plated surface, and affecting the experimental results.

Yes, in order to ensure the effect of the experiment, last night, the three-person team successfully produced a silver mirror.

When the silver mirror appeared in front of them, both Liu Tong and Liu Tie were stunned.

"This, this, this... this is it?!"

Liu Tong picked up the experimental silver mirror the size of a palm, looked left and right, and couldn't believe his eyes no matter what.

I have only seen my own reflection in the water basin before, and I can't see clearly.

So... so he actually looks like this?

Liu Tie touched it with his hands, and his tentacles were as warm as glass.

But although he has never seen a bronze mirror, he likes the glass and silver mirror very much.

They are all used to illuminate people, and the glass mirrors are clear and bright, presumably no worse than the ones outside.

Most importantly, as long as the glass can be burned out with mineral materials, and then the silver water is prepared, and a layer is applied, it is finished, which is much easier than grinding a copper mirror!

As far as raw materials are concerned, the only thing that is valuable is the mirror-coated silver, which is only a thin layer, and it is not very high after all.

"If you carve some beautiful patterns on the outer frame, you can probably get a good price."

Ning Zhizi thought while rubbing his chin.

"Inlay some beautiful colored ores, or simply make a life-sized mirror. Large-scale mirrors are rare in the world, and they can be sold as a rarity."

Neither Liu Tie nor Liu Tong dared to say anything.

In today's world, mirrors are only afforded by the nobles and the aristocratic families, poor people like them are not even qualified to take a look at them.

But no matter how ignorant you are of common sense, you have heard that bronze mirrors are not easy to polish.Mirror smiths sometimes ask them to customize copper mirror blanks. Basically, the blanks are required to have a flat surface, but the size should not be too large, because it is difficult to polish.

Therefore, the size of the current copper mirrors is not large, and it is difficult to keep the copper mirrors flat and smooth if they are too large.

If you really make a mirror the size of your body, you can imagine what kind of storm it will cause!

Liu Tong and Liu Tie didn't dare to think about it anymore.

But the two kept the mirror-making steps firmly in their hearts, and planned to find some time to ask Jizi for advice on how such a miraculous change happened.

Because of distraction, the timing of the two was just right. After Liu Tie put the coated glass plate on the disk, Ning Fei's solution was also prepared.Almost without interruption, the young man Moko poured the whole cup of liquid evenly on the glass plate, then covered the glass plate with another pottery dish of the same size, put it in a warm water tank, and slightly heated it to prevent dust from sticking to the plate. noodle.

It is a pity that the reagent cannot be purified accurately and its components can be calculated, otherwise the by-product glucosamine of the reaction can be used to treat a joint disease.

Ning saw a little bit of regret, then smiled and said to everyone in the audience.

"After a moment or so, it will be considered complete."

What?That's it! ?

Everyone was surprised.

When they saw Juzi falling over and over on top, they said it was done?

This is... too fast!It's so simple!

If it is to make a bronze mirror, the raw ore materials need to be smelted and poured first, and after the prototype is made, the craftsmen need to polish it carefully.This is a crafty job, and any unevenness will make the silhouette of a person distorted, and there is no way to use it.

This is still the beginning, it is the mirror craftsman's secret skill.

The ancestors relied on this thing for food, and outsiders have no way of knowing how the copper surface turned into a smooth and recognizable bronze mirror.However, the bronze mirror is not made once and for all. After a period of time, the mirror surface will become yellow and rusty, and you have to find a mirror maker to deal with it. Only wealthy families can afford the money and effort.

Most of the people in the audience were poor people, and they had never seen such a rare thing as a mirror, but Shisan listened very attentively, staring straight at the pottery plate on the stage, wishing he could rush up and lift it up right now. He opened the lid to see if it was the one he had seen in his mother's room.

After waiting patiently for two quarters of an hour, Shisan finally hoped that Ning Juzi would open the pottery plate.

"Wow--!"

Someone in the crowd yelled.

"Silver mirror! It's really a mirror! A silver mirror!"

"Ah! I have so many wrinkles!"

"Mother, why are there so many pockmarks on my face? It's scary!"

The crowd rushed up with a whoosh, and were amazed around the mirror in Liu Tie's hand.

These are all fun to watch, and Shisan is the most surprised.

He was not in a hurry to get on the stage, his eyes were fixed on the square mirror in Liu Tie's hand, and he kept looking up and down.

"Glass...glass..."

"It turned out to be a silver mirror!"

Unlike copper mirrors, which always have a yellowish hue, the light in the mirror is almost the same as the outside world, and every hair can be seen clearly.

The silver mirror surface is blocked by thin glass, and the back is sealed by tung oil and white wax, so you don't have to worry about the mirror rusting and go to a mirror maker.

The little boy shivered, as if he had suddenly come to his senses, and stared at Ning Juzi with black and white eyes.

"Brother Fei, you really made a silver mirror! Is this the chemical reaction mentioned in class?"

Ning Fei has a good impression of this little Feng family cousin. She has seen him engrossed in listening in several classes, and will pester her husband to answer questions after class.

Such a good student, which teacher doesn't like it?

"Yes."

Ning Fei nodded.

"In fact, the reason is very simple. It is to melt the silver block into the water, and then use other things to transform each other, and restore the silver evenly on the glass plate."

"With glass as a seal, the silver surface will not be oxidized by the air and become rusty and dull, so it can be used forever."

"Oh, so, so it is."

Thirteen blinked his big eyes, his little face was flushed, and he was trembling with excitement.

Now he finally understands why Brother Twelfth likes Brother Xiaofei so much! Brother Xiaofei is so smart, he can do many things that others don't know how to do, and he is kind and patient with others, much better than the brothers at home!

"That……"

The little boy rubbed his hands together, suddenly a little shy, like a timid little beast.

"Can I learn chemistry with you?"

Hearing what he said, Ning Zazi raised his eyebrows.

"What, you like chemistry?"

Thirteen continued to be shy, but bravely expressed her thoughts.

"I like it! The science of chemistry can solve many of my problems, and it seems to be able to touch the truth of the changes in the world."

"Even if it's dangerous?"

Ning Fei paused, bent slightly, looked at the young boy with kindness in his eyes.

"Changes are also dangerous, such as the ammonia water I used just now, if you smell it too much, it will damage your body, and if it is flammable and explosive, it will kill you."

"Aren't you afraid of these?"

"I'm not afraid, I'm not afraid!"

Twelve Lang suddenly rushed over, jumping on the high ground to express his determination with his brother Fei.

"Brother Xiaofei, I am not afraid of death. I am a man who has been on the battlefield. I am not afraid of death!"

Ning Sawzi: ...

Ning Fei: "Hehe, Twelve Lang, judging from the current results, your talent does not lie in the way of transforming things. Don't waste your excellent physical fitness and flexible response ability."

"correct."

Ning Zaozi picked up a wooden box from the table as if he suddenly thought of something.

"This is a reply letter to your elder brother. There is a small souvenir in it. I have to trouble Twelfth Lang to work hard."

"Okay! No problem!"

Twelve Lang happily agreed.

Although Brother Xiaofei didn't agree to teach him the science of chemistry, he also affirmed his physical strength and his talent in martial arts!

He took the wooden box and asked casually.

"Brother Xiaofei, what kind of souvenir is this?"

"Mirror."

Ning Fei didn't hide it.

"The first one just made yesterday is also the first glass silver mirror in the world. It's quite commemorative. I'll give it to your elder brother to play with."

Thirteen is a person who is used to seeing mirrors, but is still shocked from ear to ear by the clarity and clarity of the silver mirror, let alone the people of Mozong who saw their reflection for the first time in their lives.