History live broadcast: My audience is the ancestors

Chapter 107 Four Great Inventions ()

I send my thoughts to the bright moon: Wow, great! Uptight!

Fuling:? ? ?
I send my longing to the bright moon: Oh no, I mean that I have gained more knowledge! Sister Xin, don’t worry!

Fuling: That’s the best! I am always here!
I send my lovesickness and bright moon: Sister Xin, don’t worry! I can not!
Wan Ning can’t sleep: Okay, let’s change the topic! Aren’t we talking about the four great inventions?
My charming and short-lived ancestor: Agreed!

Su Yue clicked on the comment area and said, "Huh? What have you done? Keep changing the topic?"

Wan Ning can’t sleep: It’s nothing, hurry up and talk about the next thing!
Don’t let the world grow old: Yes! Speak quickly!
Su Yue was a little speechless. After all, she finally took the initiative to stir up the topic, but they all ignored it, so she could only say: "Okay, let's take a look at the next one! Movable type printing!"

Use clay to make blanks with the same specifications, and engrave reverse single characters on one end. The protrusions of the characters are as high as the thickness of the edge of a copper coin. They are then hardened with fire to become a single clay movable type.

In order to meet the needs of typesetting, several or even dozens of commonly used characters are generally prepared for use when they are repeated in the same edition.

If you encounter uncommon words that are not commonly used, you can just make them and use them if you have not prepared them in advance.

In order to facilitate word picking, the clay movable type was placed in wooden grids according to rhyme and labeled with paper strips.

When typing, use a framed iron plate as the base, apply a layer of agent made of a mixture of rosin, wax and paper ash on it, and then pick out the required clay movable type one by one and put them into the frame.

When a frame is filled up, it becomes a version. Then it is baked with fire. When the agent is slightly melted, a flat plate is used to flatten the words. After the agent cools and solidifies, it becomes a version.

When printing, just brush ink on the pattern, cover it with paper, and apply a certain amount of pressure.

In order to print continuously, two iron plates were used, one for brushing and the other for typesetting, and the two plates were used alternately.

After printing, use fire to bake the agent, shake it gently with your hand, and the movable type can fall off the iron plate, and then put it back into the original wooden grid according to the rhyme, so that it can be used again next time.

Bi Sheng also experimented with wooden movable type printing. However, Bi Sheng did not use it due to the uneven density of the wood texture, difficulty in engraving, deformation of the wooden movable type after being wetted with water, and difficulty in separating due to the fact that it was stuck together with chemicals.

Bi Sheng's clay type printing method is not easy if you only print two or three copies. If you print hundreds or thousands of copies, the work efficiency is extremely impressive. It can not only save a lot of manpower and material resources, but also greatly increase the speed of printing. And the quality is much superior to block printing.

Movable type plate making just avoids the shortcomings of engraving. As long as enough single movable type is prepared in advance, plates can be made at any time, which greatly speeds up the plate making time.

After the movable type plate is printed, it can be dismantled and the movable type can be reused. The movable type takes up less space than the engraving plate and is easy to store and keep.

In this way, the superiority of movable type is shown.

Su Yue explained: "Bi Sheng used clay to make movable type printing, and later developed it into copper. After all, clay, I played with it when I was a child. After it dries, it is very brittle and easy to break."

Fuling: Agree! When I was a kid, my sister made a love heart for me out of clay, but accidentally dropped it on the floor and broke into pieces. I was sad for a long time!

I can't sleep at night:? ? ? What is clay?
Fuling: Ah, how do you want me to explain this? I discovered it while digging at home!
Yun Xi: Yes, it’s really hard to say. But I found it in a big pit in my hometown, and I really didn’t have it at home.

Wan Ning can't sleep: So what is that?
Fuling: Check it out yourself. It’s a kind of soil. It’s quite interesting.

Yun Xi: Plus one! I really loved playing when I was little! Don't play until you grow up.

Su Yue was really speechless about the situation they brought up when she was a child, but they didn't go too far, so they had no choice but to say: "Okay, now let's look at the next invention, which is the compass, which was Sinan in ancient times."

Step 1: First graffiti on the dial paper. You can refer to the style given in the video, or you can graffiti freely.

Then open the round transparent box first
Tip: Find a groove on the side of the round transparent box to make it easier to open the transparent box.

Then use double-sided tape to paste the dial cardboard into the round transparent box.

Step 2: Use double-sided tape to stick the base to the center of the dial jam. Make sure it is aligned, otherwise the pointer will not be able to rotate.

Step 3: Use ring M glue to stick the snap buckle and iron pointer together. Be careful when pasting and pay attention to the pasting position in the video.

The hole of the snap buckle should be aligned with the hole on the pointer, otherwise it will affect the rotation of the pointer.

Step 4: Use a whiteboard pen to mark one end of the pointer.

Step 5: Wrap the uncoated end of the iron pointer with a tissue, and point the black end of the pointer to the N pole of the magnet with the label.

Rub in the same direction for more than 30 times, up and down.

Step 6: Place the rubbed pointer on the support of the base, gently adjust the balance with your hands, and then gently move the pointer.

Observe whether the pointer can correctly indicate north and south. In theory, the black end points to the south and the unpainted end points to the north.

After confirming that it is completed, close the lid and the compass is ready.

Su Yue continued to explain: "N stands for north. You can compare the others by yourself. In fact, it doesn't have to be so troublesome. Just rub the needle we use to sew clothes on a sweater a few times and put it in water. But the success rate is about the same. Generally, there is still a certain amount of error.”

My charming and short-lived ancestor: How can I put it, it is of no use to me, after all, I am a road fool!

Fuling: Lu Chi plus one!

I send my thoughts to Mingyue: Ah ah ah, it means that it’s really hard for me to be a road idiot, especially because your map is still artificially retarded!

I can’t sleep at night: I totally agree! Mobile maps are really hard to use!

Yun Xi: Ah, isn’t it easy to find the way?

My charming and short-lived ancestor:? ? ? How can it be! I am someone who might lose myself even in my hometown!

Yun Xi: Ah, okay. I don't understand, but I respect it.

Qin Dynasty
Li Si's carving knife was almost smoking, and he kept carving there. Fusu next to him did not give in too much. I wonder if he has been around Li Si for a long time, and he has become more efficient in doing things.

Ying Zheng was also satisfied when he saw it. After all, although Fusu said he was resolute and dared to confront him before, his words were too rigid. Now look at it, Li Si asked him to engrave it and he did it without any ink marks at all.

Although he may have been a little weak, Li Si was going to be buried with him, and no matter what, he would not harm Fusu.

And it takes a long time. Let him know that Confucianism is not a good thing first, and then teach him slowly later.

(End of this chapter)