From Chief to Ball

The original cement is used here instead of clay, so the name cement first appeared in Mincheng, and people are guessing how tall the building will be.

Now it looks a little scary, the bottom load-bearing brick wall is more than two feet wide at its thickest point.

The most amazing thing is that the cement does not need to be mixed with rice soup or starch paste. After drying, it looks like a stone in the mountain.

Before it was burned down, it had already become a place where many lower-level people in Mincheng gathered to listen to stories and learn things in the evening, so many of the people who were looking forward to the completion of this building earlier really liked it.

Those who really like here are busy in this evening, so it is not those people who are idle to watch the excitement this evening.

Near the building that has just started, there are several simple brick houses, where dozens of people gather every evening.

Amending the association review that the Reform Club has passed, vowing not to violate the law and not to promote anything that is not allowed and criminal, the number of people has gradually increased.

There are hired workers, some citizens, and some young people who have completed secondary education, as well as the masters of Kaimeng Academy, Hu Lin's friends, and some young people who are full and free.

The internal system is also improving day by day. Everyone pays a certain membership fee according to their income level.

Occasionally learn arithmetic and more words, occasionally tell stories and imagine the future, and gradually start to discuss other things.For example, some pamphlets passed down from the capital, or some origins of inequality among people, etc.

Now that the association has been established in a fair manner, it must abide by the law, and will not do anything to instigate a strike or gang up to demand higher wages.Instead, they are fooled into fantasizing about increasing the scope of suffrage in order to change the law, legislate minimum wages and death workers' compensation.

Sooner or later, there will be internal divisions, but there is hope for now.Just started to think about things like equality, justice and rights, and there is still a long way to go before splitting into radicals and reformers.

This evening was the same as usual, but different.Chen Jian, one of the founders of this club, doesn't come here often, but he came today.

Out of good respect for reputation, there are so many people who come up tonight that it can't be accommodated.

Many people thought that tonight would be the same as what Mr. Zhu Gan said a few days ago. They would read a pamphlet about people and the country sent from the capital. It was a very interesting pamphlet.

However, after walking in, I realized that this was not the case. There were a lot of glassware on the table.

There is also a very strange oil lamp, which is covered with a layer of copper wire mesh, and there is a small hole in the iron coil underneath that goes deep into the glass bottle.

When people walked in, they all sat down.Soon there was no sound, and those who came late crowded at the door without saying a word.

Chen Jian looked at dozens of people in the room, said hello, turned around and wrote the words "gas explosion" on the black wooden board with a white plaster pen - gas is not written as gas, it is a transliteration of gas , but gas is still gas after all, and the words of this world are used, but they cannot change the self of gas.

It's the same as Chen Jian's address when greeting the people here.

Hundreds of years ago, there was a saying that classmates were friends and colleagues were party members.The people sitting here are far from having exactly the same aspirations, but at this moment they have vague aspirations that are almost similar.

Originally, this sentence was comrades as friends, and it was not an imported product. Therefore, when Chen Jian opened his mouth to say the word comrades, he was inevitably a little emotional, but he felt that this word was simply a stroke of magic. .

"Comrades, as a member of the club, I would like to tell you something today. I think everyone should still remember the fact that the miners went on strike because of the gas explosion the year before and demanded death compensation. But most of you here are not coal diggers. Listen It sounds scary, but I never saw it in person.”

"How about this, before telling the story today, let's invite one of us who was a 'coal black' miner to tell everyone, and then we will tell our story."

Chen Jian invited an original miner to come up. This miner was a little hunchbacked due to years of hard work, but his body was as strong as an oak tree in the north.

The miners stood in front and used their own personal experience to tell the horror of the gas explosion.Saying what you saw at the frontier is much more terrifying than you imagined, and everyone below couldn't be calm for a long time after speaking.

Imagining the tragic scene of people being killed and injured after the buzzing sound, the atmosphere became extremely depressing with the flickering of the oil lamp in the room.

After the old miner finished speaking, Chen Jian walked to the front again, knocked on the table and said: "Some things must be taken step by step. A thousand miles can be achieved by accumulating steps. This is our original intention to revise and improve the club, and it is also what everyone believes may be possible. of."

"We do charity, we fight for the expansion of voting rights, and we fight for the abolition of property bonuses. The fundamental purpose is to make everyone's life better. But what we have to do is too long, it may take a long time, but it does not mean that we will take the final step. We can't do something meaningful until one step ahead."

"These meaningful things, even if one less person died, are still useful. So today we will talk about what a gas explosion is and how to prevent a gas explosion in a coal mine."

Borrowing the dim light, Chen Jian took out a lot of bottles and jars, and did a simple hydrogen combustion experiment of acid-metal reaction.

"You see, this is a gas that can burn. Let's pretend it's gas from a coal mine."

Immediately afterwards, Chen Jian did another simple experiment, mixing hydrogen and air into a small cardboard box, piercing small holes and lighting it with fire.

In the dark room, suddenly there was a loud noise, and a dazzling fire flashed, as if someone had lit a cannonball, blowing up the carton and flying high.

It was really like a thunderbolt, scaring the hearts of many unprepared people.

Since it was ignited by Chen Jian, Chen Jian was already prepared for the explosion. After everyone quieted down, he smiled and said, "Okay, in general, this is what a gas explosion looks like, but the gas from a whole coal mine tunnel explodes. It’s far from comparable to this.”

"So why did it burn before and then explode?"

A few young people had already taken out their graphite pens and wrote down each word on paper. Chen Jian didn't talk about the principle, but did a few simple and intuitive experiments.

"Some of you who have gone to middle school know that everything that burns must come into contact with air. For those of you who haven't gone to middle school, let's start here..."

There were a lot of simple experiments again, and many people below suddenly realized that they generally understood the invisible and intangible concept of yang energy in the air.

Chen Jian took out the oil lamp again and lit it, and similarly spread some oil on the ground and lit it, and began to explain little by little that the explosion was due to the instant and violent combustion after full contact.

Just these, I talked for a whole night.In the evening of the second day, more people came, and many of them rushed here ahead of time to secure seats without even eating.

"Yesterday we talked about explosion and combustion, and today we will talk about how to prevent it from burning and exploding. Why do you say that fire can ignite wood?"

The people below hesitated for a moment, always felt that there was something magical in it, and dared not speak.After a moment of silence, a young man said hesitantly, "Because it's hot."

"Yes, that's right, because it's hot."

A group of people laughed loudly and joked, "What's the point of this?"

"Sometimes, the truth is as simple as that. In the north, you wear cotton jackets in winter and sackcloth in summer. Do you think it makes sense? Don't make these things so complicated. Everyone should know it. The reason may not be Over the top."

Speaking of this, Chen Jian lit the oil lamp again, put a wooden stick coated with sulfur powder on the fire, and it burned in a moment.

Afterwards, he took out a piece of copper mesh made by wire drawing and placed it on top of the oil lamp, and placed another wooden stick in a position where it could just burn.

But a strange thing happened, the flames couldn't penetrate the seemingly sparse copper mesh, and couldn't ignite the wooden sticks on it at all.

Many people were amazed, and Chen Jian said again: "The truth is actually simple. Let me ask you, some of you also like to drink, and the wine tastes better when it is warmed. Then you say why you use a tin pot to boil the wine, but it is useless." Porcelain pots and crocks to warm wine?"

This time everyone had the experience of last time, and answered one after another, and the general truth was also stated, that is, gold, silver, copper, iron and tin are easy to transfer heat, and the cold air dissipates quickly and the hot air dissipates quickly.

After everyone calmed down, Chen Jian said again: "So, this question is simple. After talking for two days, there are two ways to prevent the gas in the coal mine from burning and exploding. You know, the oil lamp burns There is very little yang energy in the exhaust gas, which will extinguish the fire; I also know that as long as the fire is separated by copper mesh and iron mesh to dissipate heat and then come into contact with it, it will not ignite.”

"Both methods are feasible. Let's take a look at this thing in my hand today."

It took two days to explain the truth, and everything came to fruition, and finally proposed the coal mine safety lamp that uses copper mesh to dissipate heat on the upper part, and uses iron pipes to allow air to flow in from the bottom through iron plates.

Relying on hydrogen instead of gas, after several trials, everyone in the room finally believed that this strange and unattractive lamp can really prevent gas explosions in coal mines.

Moreover, many people here feel that not only do they believe that there will be no bombing, but they also understand why it will not be bombed.

Safety lights can't actually reduce the number of deaths in coal mines, especially before the invention of electric lights, which are still open flames after all, and are still prone to problems after all.

In addition, because of the safety lights, coal mines can be dug deeper, more people use them, and mine owners can grab more profits.

When there are more people, the base number is larger, and there are still many deaths of various kinds, but the absolute number will increase instead.