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I saw Zhao Yan snatch the things in Shu'er's hand, and then checked it carefully, and found that at least there were no scars on the outside, so he finally put his mind at ease, and wiped the dust on it with his sleeve at the moment, revealing the black body below, this thing is the mobile phone that Zhao Yan brought when he crossed, but unfortunately it has long been out of power and has been stored by him in the study.

"Shu'er, how did you find this phone?" Zhao Yan asked with a stern face, there are not many things he brought with him, but they all have a heavy meaning, in order not to let others see them, he deliberately hid these things in a particularly safe place in the study, which is impossible for ordinary adults to find, and it stands to reason that a child like Shu'er is even more impossible to find.

Seeing Zhao Yanyan's appearance, Shu'er was also startled, and then said in a hurry: "I...... I just ...... Just now in the test Uncle said that two things of different weights fall at the same height, will they fall to the ground at the same time? ”

Zhao Yan was stunned for a moment when he heard this, and then he also thought about it, before he dozed off, he did tell Shu'er some knowledge about gravity, and also asked him to do it himself, but then he frowned and said: "I asked you to do this kind of real thing, but what does this have to do with you finding your mobile phone?" ”

"Yes, I found two stones, one large and one small, and then stood on the table and let them fall at the same time, but the two stones did fall at the same time, but when the big stone landed, it made a 'bang' sound, as if the ground was empty, so I pried open the floor tiles on the ground, and sure enough, I found a box underneath. There were a lot of strange things in it, so I took one and showed it to my uncle......"

When he said the end, Shu'er suddenly understood something, and his voice became lower and lower, and finally he couldn't say any more, because at this time he had already thought that these things should have been hidden by his uncle.

However, Zhao Yan patted his head in annoyance when he heard this. Pulled Shu'er to the study at the moment, and sure enough, he saw that the ground next to the desk had been dug up by Shu'er, and the box where he stored his things was also opened, and the mobile phone that should have been in it was now in his hand.

"Huh? No, I remember the box was very sturdy, and there was a lock on it, how did you open it? Zhao Yan walked over and asked, in order to store these items brought after the crossing, Zhao Yan also spent a lot of thought and strength. For example, this pit in the ground is not ordinary, it is filled with a thick layer of lime and charcoal around and underneath, and the contents of the box are tightly wrapped in oiled paper to prevent moisture.

"It's very simple, I'll just smash the lock with a stone!" When Shu'er heard Zhao Yan's question, he said with a natural face, he didn't know that this was Zhao Yan's thing just now, and he thought that he had dug up some treasure from the ground. So I smashed the lock without thinking about it, and found this black square-like phone.

Zhao Yan also saw the smashed lock at this time. At the moment, he shook his head helplessly, it seems that bear children like Shu'er really can't be too relieved, otherwise they don't know when they will turn your beloved things out and waste them, this time fortunately I found it early, otherwise this dead mobile phone may not escape.

"Uncle, I was wrong, but what is this phone? What's the use? Shu'er first bowed his head and confessed his mistake to Zhao Yan, and then immediately asked again, following Zhao Yan during this time, he had already developed his curious nature, and he wanted to ask why no matter what he saw.

Shu'er is so young. Zhao Yan didn't bother to blame him, and when he saw his curious gaze, he had to answer helplessly: "Mobile phone is a kind of ...... Uh~"

Zhao Yangang wanted to explain the function of the mobile phone, but suddenly he didn't know how to explain it? If he says that the mobile phone is used to talk to people who are far away, but now the mobile phone has lost this function, it is impossible to prove it to Shu'er, and it may even make Shu'er think that he is lying.

Thinking of this, Zhao Yan hesitated for a moment and finally spoke again: "Shu'er, this mobile phone has a lot of functions, but it needs electricity to drive, but now it has no power, so there is no way to use it at all." ”

"Electricity? Is it the kind of lightning on a rainy day? Shu'er asked with a pair of wide, curious eyes.

"Well, lightning is also a type of electricity." Zhao Yan smiled and nodded, he had long been surprised by Shu'er's cleverness.

"Then let's find a way to catch the lightning and put it in the phone, isn't it ready to use?" Shu'er asked innocently again, and at the same time, there was an eager expression on her little face.

Zhao Yan was also startled when he saw the appearance of this little guy, and hurriedly explained: "Although lightning is also electricity, the energy of lightning is too violent, even if it is caught, it cannot be used directly, and the power required by the mobile phone is also very small, so we usually charge the mobile phone with another kind of electricity!" ”

"What kind of electricity is that, can we make it?" Shu'er asked curiously again.

"Manufacture!" Shu'er's words were like a slap in the head, which made Zhao Yan's mind flash a bright lightning, since the phone ran out of power, he had always felt that he couldn't find a place to charge, so he threw it in the box and left it alone, but he forgot that he could make a generator, maybe he could charge the phone.

Thinking of this, Zhao Yan immediately jumped up excitedly, hugged Shu'er and kissed her fiercely, and then laughed and said, "Great, let's go find something to make a generator to charge the phone!" ”

Shu'er saw that his uncle was so happy, and he also noticed the giggles at the moment, and he also liked his own erudite uncle more and more, because no matter what question he asked, he could help him answer it, which was much better than his own parents.

At that moment, Zhao Yan rushed to find the housekeeper Lao Fu, and asked him to find the materials for making generators as quickly as possible, such as the most important thing is a large magnet, and Zhao Yan also needs copper wire, he was originally worried that there was no copper wire in this era in the Northern Song Dynasty, but after asking Lao Fu, he knew that the copper wire was already there, but the quantity was relatively small, and it was not easy to manufacture, for example, copper wire was used in some crossbow strings, and there were also people who inlaid copper wire on the lacquer painting, called copper wire lacquer painting, and the same number was very small.

The price is expensive, as long as there is it, under the urging of Zhao Yan, Lao Fu found the magnet and copper wire as quickly as possible, and then Zhao Yan went to find the carpenter Zhu Hong at home, their family still did carpenter work in that yard, when they saw Zhao Yan coming, the mentally healthy Zhu Hong also immediately greeted and saluted.

Zhao Yan smiled and said hello to Zhu Hong, and then asked him to find an apprentice with good skills to help him make the generator, for Zhao Yan's instructions, Zhu Hong naturally attached great importance to it, and immediately let the apprentice take over his own work, and then personally help Zhao Yan, after all, no matter how well the apprentices learned, there was still a gap compared with him as a master.

Zhao Yan didn't be polite to Zhu Hong, and told Zhu Hong about his own requirements at the moment, in fact, what Zhao Yan wants to do is a hand-cranked generator, the principle is very simple, the structure is just as simple, as long as people who understand electromagnetic induction can design it, although Zhu Hong does not understand what Zhao Yan wants to do, but it is very easy to make the frame of the hand-cranked generator according to his requirements.

When Zhu Hong understood what he was going to do, he immediately began to pick up the wood and make it, while Zhao Yan instructed Shu'er to wrap copper wire on a wooden frame to make a dense copper wire ring, which will act as a stator in the generator, and the magnet will rotate at high speed in the copper wire ring, acting as a rotor, so that the copper wire can cut the magnetic field and generate an electric current.

The structure of the hand-cranked generator is simple, and Zhu Hong's movements are very good, so it only took a morning to complete the frame of the generator, and then Zhao Yan instructed him to fix the copper wire ring and magnet in the corresponding position, and the entire hand-cranked generator was ready.

I saw that this hand-cranked generator is divided into two parts, the first thing that catches the eye is a big wheel, and there is a handle on the wheel, when you can turn the big wheel, and then drive the belt, the other end of the belt is connected to a small wheel, the magnet is fixed on the shaft of this small wheel, and it will rotate with the magnet at that time.

"Uncle, can this generator really make electricity?" Shu'er asked innocently with her chin in her hands.

"Of course you can, let's make a real yàn first, you grab the two threads of the copper wire with both hands, and I'll turn it around!" Zhao Yan said very unscrupulously, although the current from the hand-cranked generator was not strong, he didn't want to try it himself.

"Oh!" Shu'er was very obedient and stretched out her hand to grab the copper wire, and then Zhao Yan immediately shook the big wheel, and after a while, Shu'er shouted, "Uncle, my hands are so numb, and there is something drilling into my body, it's so fun!" ”

"Haha, it worked! Let's go charge your phone! Zhao Yan immediately laughed when he heard Shu'er's words, and then couldn't wait for Zhu Hong to send someone to send the generator to his study, although the mobile phone could not make calls even if it was charged, but it had an extraordinary significance for Zhao Yan.

Zhu Hong was very happy when he saw Zhao Yan's excited appearance, although he didn't know what this thing called a generator was for, but as long as the king of the county was satisfied with his own craftsmanship, it would be done. At that moment, he asked the two steady apprentices to carry the generator to Zhao Yan's study, and personally followed them along the way, so as not to fall.

After being sent to Zhu Hong's master and apprentice, Zhao Yan immediately took out the mobile phone and the charger, and tied the two copper wires to the charger plug respectively, although he knew that the voltage emitted by the hand-cranked generator was very unstable, but the mobile phone was actually not so squeamish, he had also used the weak current on the telephone line to charge the mobile phone, and it was full, but the charging time was much longer. After waiting for a qiē to be ready, Zhao Yan grabbed the handle excitedly, and then began to shake the generator. (The novel "The Idle King of the Northern Song Dynasty" will have more fresh content on the official WeChat platform, and there will also be a 100% lottery gift for everyone!) Open WeChat now, click on the "+" sign in the upper right corner to "add friends", search for the official account "qdread" and follow, hurry up! (To be continued......) R1292