The principle of the hand-cranked generator is very simple, and there is not much difference from the ordinary generator, that is, the coil rotates in the magnetic field, but the power is human. lā

Naturally, because the power is manpower, the power of the hand-cranked generator is very low, and it is only for field emergencies, charging mobile phones and the like. At best, if you can get a light bulb, it will be bright and dark because your hand is unstable.

Instead, you can try to connect a carbon rod to make an electric candle, and when you shake it, an arc of electricity will appear between the tops of the two carbon rods. This arc can illuminate, much brighter than a kerosene lamp. However, it is necessary to win people who keep shaking. As for batteries, although Xia Hongsheng knew the earliest practical application of battery packs "volt stacks", he did not know how to smelt zinc. Without zinc, it is difficult to make a battery that can really be used in practical applications, and naturally it is impossible to make a volt stack.

"Li Tai, write it down, in the eleventh year of Zhenguan in the Tang Dynasty, my son made the world's first generator based on the principle of electromagnetic induction." Xia Hongsheng said to Li Tai very proudly: "This generator uses manpower, and uses a hand-cranked rocker to drive the coil to rotate, cut the magnetic field, and generate an electric current. ”

After that, Xia Hongsheng personally stepped forward and connected the copper wire as a wire to the generator, and then wound the other end of the copper wire to two point-to-point charcoal pens.

After doing this, Xia Hongsheng gestured to the side and said, "Okay, you go over and shake the rocker." ”

The wrestler at the front answered, then went over and grabbed the joystick and shook it.

"A little bit faster." Xia Hongsheng said.

"Okay!" Nalux's men were immediately a little faster.

As he turned, he saw that the two charcoal nibs were pointing red and brightening, and soon some sparks began to burst out from there.

"It's an electric spark." Xia Hongsheng pointed to the electric sparks and said to Li Tai.

After that, I saw Xia Hongsheng have two more chopsticks in his hand, he approached with chopsticks, and opened the charcoal nib full, so that there was a gap between the two charcoal nibs.

Suddenly, everyone saw Xia Hongsheng's hand, and from the gap in the tip of the pen, there was a bright light that could be clearly seen even in the daytime at this moment!

In the bright light, there was a thin blue arc of electricity.

"This ...... This is...... Electricity?! Li Tai's eyes looked at the bright arc of electricity feverishly, as if he saw a door to a new world.

Xia Hongsheng nodded: "Yes, this is electricity." ”

"Master, with the development of generators in the future, will it be possible to generate much larger electricity than this?" Li Tai stared at the arc of electricity and asked.

"Nature." Xia Hongsheng said: "Qingque'er, your talent is the smartest I have ever seen, and you can call on resources to support scientific research, and you are also the most person in the scientific research institute. If there is anyone in this world who can make a generator set that can really be put into practical use, then this person must be you. Qingque'er, everything I know about electricity has been taught to you. And these are only the surface of the surface of electricity. We need more people to devote themselves to it, to delve into it, to spend countless hours and efforts, and to spend generations of hard work to get a glimpse of it. I miss you ......."

"Master, I understand." Li Tai met Xia Hongsheng's eyes and said very firmly: "I will personally select a group of good people in physics from the academy, personally teach them the content of electricity, and then explore this knowledge with them, and then teach it to the students of Jingyang Academy!" ”

Xia Hongsheng raised his hand and patted Li Tai on the shoulder, and said, "Okay! If you want to study electricity, there is one more thing you can't miss. That's the battery. Do you remember the bottle I used to hold the thunder when I caught it? That was the original prototype of the battery. It can store electricity in it. However, the bottle doesn't count as a battery yet. The battery stores the electricity from the generator and releases it when it is in use. To make a battery, you need something that is very difficult to obtain. ”

"Battery, Shizun said it before!" Li Tai's eyes lit up: "It turns out that the master can also make it!" ”

"You can't make it without that kind of thing." Xia Hongsheng shook his head.

"What is it?" Li Tai asked.

"White lead, which may also be called lead or tin." Xia Hongsheng said: "It is a kind of metal, which is often used with copper to make brass. ”

Xia Hongsheng is talking about zinc. Zinc was called white lead in ancient times, and China happened to be a country that used white lead for smelting and using white lead in history, that is, zinc was very early. However, because zinc is volatile at high temperatures and difficult to capture, its smelting technology appeared and matured much later than metals such as copper, iron, tin, and lead. The large-scale use of zinc to make brass alloys was in the Ming and Qing dynasties, and Xia Hongsheng did not know whether there were any means and methods for smelting zinc in the Tang Dynasty.

Xia Hongsheng only knew that it was roughly a method of distillation, but it seemed that the same distillation was not the same. I don't know how to do it.

"Master rest assured, as long as such things are available in the world, I must find them. Even if you can't find it, you'll make an idea. I don't know what else Shizun has about this thing? Li Tai asked.

"All I know is that it is mostly mixed with lead, and that it may be found in the ore used to refine lead. It is used as a raw material and separated from it by a special distillation method. Xia Hongsheng said: "This kind of ore is in the territory of my Tang Dynasty, and it is mostly stored in the land of Nanzhao, so you can send people to explore there." ”

"Master, don't worry, I must find this ore and refine this thing!" Li Tai said very resolutely.

Xia Hongsheng nodded: "Okay, this matter is not in a hurry, we must study and explore step by step." I'll leave this hand-cranked generator to you. You take it back with you. ”

Li Tai looked at the hand-cranked generator, suddenly shook his head with a wry smile, and said, "Brother Sheng, I have a hunch that I am afraid that in this life, I will have to ride into this." ”

"In your life, in exchange for countless people's countless conveniences, it is also worth it." Xia Hongsheng patted Li Tai and said with a smile: "Don't say anything else, just one thing is enough for you to get countless supports." Do you remember that I once said that there is something that can transmit messages thousands of miles away in an instant, and there is even one thing that can make people face to face, even if they are thousands of miles apart, they can see each other's voices and smiles, as if they were talking face to face? ”

"This is also the category of electricity?" Li Tai exclaimed.

"So, let's work hard~ boy!" Xia Hongsheng slapped Li Tai's shoulder heavily, making him bared his teeth.

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