"What, are you sure, Bidenfu, are you sure it's the current?"

Even Zhu Jie is accustomed to seeing strong winds and waves, he stood up in shock, this news is too shocking, I didn't expect that it was not only the steam engine that came out in advance, but even the generator had to come out in advance, thinking about the West, if you want to discover the law of electromagnetic induction and invent the generator, it will take nearly two hundred years!

Zhu Jie asked urgently: "For such a big thing, why didn't I see the chapter, why didn't I see the corresponding newspaper report?" ”

Now, under Zhu Jie's initiative, a newspaper bureau has been set up in the north and south of Kyoto, which specializes in reporting on the political situation of the imperial court, the war situation, and local affairs.

Bi Dengfu hurriedly said: "Your Majesty, not many people know about this matter, because this matter is too exaggerated, and the school's proposition is still temporarily suppressed, and this teacher only made this thing, but the corresponding discussion has not been sorted out, so it has not been published in the newspaper......

"What's the name of this teacher?"

Zhu Jie asked, "Is it a Westerner, or is it from our Ming Empire?" ”

"Our Ming people, this is Mr. Song Yingxing personally invited to introduce to Shuntian College to teach, the name is Xue Fengzuo, this year is already the year of knowing the destiny of heaven, for Chinese and Western theories have a deep study, attainments are quite profound, especially in mathematics, astronomy, physics three fields have unique insights, he said to the minister, using magnets to generate electricity is a profound knowledge, he alone, I am afraid that it will take at least five to ten years to be able to figure it all out, of course, If you just want to explain the principle of this power generation, maybe it will come out in three or two months, and when the time comes, it will be just after the end of the year, and you will be able to catch up. ”

Bi Dengfu said with a smile.

"Okay, in that case, tomorrow, let's go to Suncheon Academy together, and I want to see with my own eyes, this generator invented by Mr. Xue Fengzuo!"

Zhu Jie said in a deep voice.

Early the next morning, Zhu Jie took a group of people to Shuntian Academy.

When Zhu Jie saw the so-called generator, his heart was full of helplessness, it was too simple, it was a wooden shelf, holding a huge magnet, this magnet was cut into a wooden stick, with the thickness of an arm, and there was a wooden frame around the wooden frame, which was used to fix a circle of copper wires, and one end of the magnet was fixed with this handle, which was obviously used by people to shake, once it was shaken, due to electromagnetic induction, an electric current would be generated, and it would be introduced into a copper wire along the metal ring.

Simple, too simple.

However, Zhu Jie also understands that after all, this is the seventeenth century, and another time and space, the invention of the electric motor, that is only after entering the nineteenth century, it is still two hundred years away, the development of science, has not yet reached a certain step, to be able to produce this, it is not easy.

"Your Majesty, turn the handle, when the speed reaches a certain speed, we can feel a slight soreness through the arm, which means that the current has begun to appear in the copper wire......

Xue Fengzuo said in a low voice, "Wait for the ministers to show the emperor, the emperor can touch and feel it himself, the emperor can rest assured, this current is very small, and there is no harm to the human body......"

Zhu Jie smiled and said, "No need, Mr. Xue, when I saw this instrument, I was already sure that it could generate current, but have you ever thought about what the current you measure now will be of any use in the future?" How is it being used? How do you determine the strength of this current, and what does the relationship between electromagnetism look like? ”

Xue Fengzuo was stunned for a moment, and hurriedly replied: "Your Majesty, these ministers have all imagined, but the ministers have just started to study now, and they are just a little eyebrows, and if they want to solve these problems, it may take a few years before they can determine ......."

Zhu Jie smiled: "It's okay, today I will tell you about the mystery in it......

Xue Fengzuo's heart was shocked, the mystery between electricity and magnets, the emperor also understands?

"First of all, electricity and magnetism are two kinds of energy in the universe, these two energies can be converted into each other through a relationship, the instrument you are making now, let's call it a generator, is to convert magnetic energy into electric current through your shaking handle, and the movement of the magnet and the coil must follow a certain law, isn't it?"

Zhu Jie asked.

Xue Fengzuo nodded hurriedly, this mystery was only known to him and his assistants, but he didn't expect the emperor to know it!

"I can also tell you that this current actually has a direction, it flows out from one end, and it enters the other end, the outflow end is called the positive end, and the inflow end is called the negative end, which is really named after them, if it is not suitable you can correct it, and in the same way, if these current flows out into another setting of the same type, through the influence of the current, the other setting will react in the opposite way to your setting, and this is the direction of his future application, because electricity reacts with the magnet through electricity, It can also be converted into the effort you put in when you hand crank the handle, that is, our kinetic energy, we can call it an electric motor, one positive and one negative, which can just provide us with a steady stream of power, just like a steam engine! ”

Zhu Jie continued.

Xue Fengzuo suddenly realized and asked, "Your Majesty, what's going on with the mystery in this?" ”

Zhu Jie smiled: "It's very simple, in the Han Dynasty, Dong Zhongshu once put forward the theory of heaven and man induction, whether there is induction with people in this day, I can't be sure, but this electricity and magnetism are inductive, I call it electromagnetic induction, which is a law to follow, as for how to follow, you need to test again and again to prove and explore, and, measuring the current by hand is too primitive, why not make an instrument according to the principle of electromagnetic induction, used to determine the presence and strength of the current?" According to the current that can be sensed by the hand, this current is already very strong, and it can even drive the movement of objects, you even think that the current has just been generated, Mr. Xue, you think it is too simple......"

In fact, Zhu Jie is just picking up other people's teeth, and asking him to make a generator may not be difficult for him, but let him tell the law of electromagnetic induction in detail, what Lenz's law, and what electromagnetic principle, where does he have that ability? And he doesn't have that energy, all he can do now is use his prescience to show others the way.

This instrument for measuring electric current was not a rare thing in later generations, but it was just an ammeter that was rotten by middle school students......

(End of chapter)