When it comes to hand-operated generators, the principle is actually very simple, that is, a closed coil rotates in a magnetic field and uses the phenomenon of electromagnetic induction to generate induced current.
After Tang Ping explained the principle clearly, the students in the new school exploded. Unexpectedly, they could generate electricity in this way.
So a group of people started building their own hand generators.
Then they felt that it was hard to crank it by hand. Thinking that the keel water wheel could be pedaled, and after seeing Li Bai's mountain bike, a group of people decided to just make a pedal generator.
In fact, it would be very easy for Tang Ping to buy finished products from the Internet, but he felt that in order to popularize it, he could only let people here study it themselves.
After all, although he can shop online, he has to wait for nearly an hour for an online purchase, and the size of the items cannot exceed his small warehouse.
If he wanted to provide electricity to Datang or Chang'an, his endless online shopping for generators would not be enough.
So the best way is to make it yourself in Datang.
Cheng Zhijie was led to the thing that was similar to a bicycle and asked curiously: "This thing can really generate electricity?"
"It shouldn't be a big problem!" It was Tang Ping who spoke. These cowards had made the generator, so they naturally wanted to notify Tang Ping to come and take a look.
"I've met the prime minister, and I've met General Cheng!" Tang Ping cupped his hands.
"No need to be polite, how can this thing generate electricity? Just step on it?" Cheng Zhijie was a little disbelieving.
"That's it!" Cheng Chumo said, straddling it, and then Cheng Zhijie pinched his neck.
"Come down, let me try it, and then I will know if you guys are tricking me."
Under the suppression of his bloodline, Cheng Chumo could only stand down obediently and give up his position to Cheng Zhijie.
"Just step hard?" Cheng Zhijie confirmed again.
Tang Ping helped check it, nodded, and explained: "This is the generator, and here is the voltage regulator they built. The DC lights connected here should be fine."
While they were talking, Cheng Chumo and others had already pulled up the thick curtains in the classroom, and the whole room suddenly became dark.
Cheng Zhijie also started to pedal hard. There was a little delay at first, but after two laps, the speed picked up.
"It's bright, it's bright!"
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Cheng Chumo and others became excited. At first, they made a small hand-cranked device that could only light up a small neon bulb.
Pressing on the enlarged large one, they had just finished it, but they didn't expect that the light bulb would light up the first time they used it.
Cheng Zhijie could also clearly feel the room lighting up. While stepping on it, he turned his head to look at the glowing light bulb.
Soon he discovered that the faster he stepped, the brighter the light bulb became. Of course, after the brightness reached a certain level, it became more stable.
"Dad, Dad, are you tired? Let the child step on it!"
"Tired... Tired... What? You think your father's general... is... for free?" Cheng Zhijie was out of breath and unwilling to come down. He felt that the light bulb behind him was on, and it was very strange. Comfortable.
Tang Ping couldn't stand it anymore, so he raised his forehead and said, "General Cheng, why don't you take a look at the new thing I made?"
"Is there anything new...new stuff?" Cheng Zhijie finally stopped: "Okay, let's go and have a look, otherwise I can still go out for an hour or two."
Cheng Chumo and others wanted to continue, but Tang Ping stopped them.
"Okay, I told you, you have to learn to use the power of nature, come with me!"
After Tang Ping finished speaking, he opened the door and went out.
Cheng Chumo and others glanced at the generator with pity. Although they were reluctant to part with it, Tang Ping said that there must be something good, so they still had to go and see it first.
Tang Ping had just heard that a few people had made a pedal generator, and he had just asked Wang Tieniu to make a new one for him, which had already been moved outside the new school.
"What is this?" Cheng Zhijie and Fang Xuanling asked as they looked at a large pile of things pulled on a cart.
"This should be called a steam engine."
"Dad, do you know about steam? When you usually boil water, the water droplets on the lid of the pot are small water droplets condensed after the water vapor is pre-cooled."
Cheng Chumo stood aside to educate Cheng Zhijie, and then gave his father a slap on the head.
"I don't know, why don't you tell me quietly?"
Tang Ping rarely paid attention to the pair of living treasures, pointing to one part and saying: "This place is actually a boiler, which uses coal to boil water and provide energy."
Isn't there a joke?
boil
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Water is the primary productive force? The essence of human energy evolution is to "boil water in a fancy way."
Although it is a joke, it is basically correct.
But for Cheng Zhijie and Fang Xuanling, this is a fantasy.
"Can you really make a call by boiling water?" Li Shimin said this once just now. The two of them didn't believe it, thinking he was just teasing them.
Now that Tang Ping said this again, it is probably true.
"Actually, the principle is to use the steam generated by boiling water to push the piston." Tang Ping tried his best to explain it simply. These two people had never studied in Xinxueguan. They were about to say directly that they would not understand the principle.
"General Cheng and Mr. Fang have seen that after the water is boiled, the lid of the pot should be raised."
"Of course I have seen it. After the water boils and the pot lid is tightly closed, there will be a banging sound." Fang Xuanling suddenly realized: "So when the pot lid is pushed up, it is the steam you mentioned that is pushing it!"
When Cheng Chumo explained to me what steam was just now, he could hear it clearly from the side.
"That's right, so look at my boiler. It's sealed. After the water boils below, the steam can't escape. We can only push the piston up. After pushing the piston up, the hot steam is released. , the piston falls again, and so on.”
Before this, the reason why Tang Ping didn't build a steam engine was mainly due to the raw materials. If it were to burn firewood, the efficiency would be too low.
Now that we have coal, things are different. You must know that the earliest trains were all powered by coal.
Cheng Zhijie looked at the transmission rod connected to the piston and understood: "As long as this rod is connected to the pedal that someone stepped on just now, no one will step on it, right?"
But in his heart, he secretly complained about Tang Ping. He just said that there was such a thing when he saw that he was as tired as a dog. He completely forgot that it was him who was unwilling to step down just now.
"Yes, this is a steam engine. According to this principle, any machine that uses human power, wind power, stored energy, and water power can actually be driven by it!"
You must know that the first industrial revolution was marked by the widespread use of steam engines.
"Then I paid for this Laoshizi machine. Mr. Tang, tell me how much it costs!"
(End of chapter)
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208 Boiling water is the primary productive force. Free reading.
