Xu Ting really saw Zhang Ziyun's hair messy, but she pretended not to know.

smiled slightly, and said helplessly: "It's none of your business, who would have thought that Jiannu would suddenly come, and you can only blame the damn Jiannu." ”

Wang Yue said: "It's good to think like this, don't worry, our group training will not disappoint you." ”

"I believe in you and thank you for your efforts!"

Xu Tingzhen didn't believe that the group training could protect her even if she didn't believe that the group training could protect her, and she couldn't say anything in front of Wang Yue out of politeness.

Everyone's girlfriends are different, they really can talk.

"Hexiang, can we start?" Wang Yue asked.

"It's okay, just wash this potato chip."

Wang Yue said: "After washing, you can eat it too!" ”

"Ahh He Xiang looked at Wang Yue in surprise and then at Zhang Ziyun.

Wang Yue smiled: "Don't look at it, today we don't distinguish between high and low, let's sit together." This Tartar invasion was also a disaster, and those of us present were also considered to have shared the suffering. ”

Zhang Ziyun also said: "Since Sihua said so, Hexiang will come and sit." ”

"Alas, good!" Hexiang glanced at Wang Yue gratefully.

The smell of this beef is tempting, originally because of her identity, she can't share the table with Zhang Ziyun. Although Zhang Ziyun didn't pay attention to these when there were no outsiders, there were no guests today.

Wang Yue is just trying to be lively, and eating hot pot requires a lot of people to be interesting, not to mention that it is accompanied by three beauties.

The beef is simmered soft, and the soup is fresh. All kinds of vegetables are in the pot, floating and sinking in the hot pot, and you have a great appetite when you look at it.

Xu Tingzhen sandwiched a piece of beef, blew it into her mouth, and nodded while chewing.

said: "The taste is really good, we rarely eat beef in our house, and we can't make this taste." Where did you come from? I haven't seen a cow in this city. ”

Wang Yue smiled: "It's from a secret place, it's very secret. ”

Zhang Ziyun said to Xu Tingzhen: "If you ask, it's in vain, I don't know how many times I've asked, every time it's a secret." From this room to this city, there is nothing that is not a secret. ”

Wang Yue was moved: "Ziyun still understands my heart!" ”

Zhang Ziyun smiled: "You have too many secrets, I'm tired of asking." I'm more interested in that science, though. ”

"If you're interested, you can learn from me." Wang Yue said.

Zhang Ziyun said happily: "Okay, then let's start with electricity first." ”

"You've found the right person, this is my forte." He picked up the cup with the drink and said, "When there are a thousand cups of wine, I will toast you with tea instead of wine." ”

Xu Tingzhen was also interested, and electricity was used everywhere, which made her wonder why.

She said, "Can you tell us how you used the lightning in the sky for your own use?" ”

Wang Yue put down the cup and said, "Let me briefly talk about it, you have a concept first." The electricity we use is the same as the lightning in the sky, but the amount of energy is different. Our electricity is self-produced, not from heaven. You've played with magnets, right? ”

Seeing them nod: "Place the magnets on both sides, and they will attract each other and hold them in place." When a wire is passed back and forth between two magnets, an electric current is generated in the wire. ”

Seeing that he didn't say anything, Zhang Ziyun asked, "It's over?" That's electricity? ”

Wang Yue said with a smile: "The truth of getting electricity is almost like this, the larger the magnet, the faster the frequency of the wire passing between the magnets, and the greater the current intensity." ”

"I kind of understand, so how can you keep the wires going between the magnets? Do you use mules and oxen to pull in circles? Zhang Ziyun asked again.

Wang Yue almost burst out laughing and coughed repeatedly.

Zhang Ziyun angrily hammered him.

Xu Tingzhen picked up the drink and pretended not to see it.

"Okay, okay," Wang Yue begged for mercy, "you have to remember one thing, energy is conserved. What is Energy? You see that charcoal burning is called heat energy, and the steam in the soup is boiling to bubble the top of the soup, which is called kinetic energy, and the movement of cows and horses also belongs to kinetic energy. ”

"Electricity is also a type of energy, called electrical energy. The heat energy of charcoal combustion is heated into water vapor by water, which is the conversion of heat energy into kinetic energy. The wires pass back and forth between the magnets, which belongs to the conversion of kinetic energy into electrical energy. ”

"We just said that energy is conserved, so the energy converted by the energy of the cow and horse is very small, and the electricity will also be lost in the process of transportation, for example, water will be absorbed by the ground in the flow. Therefore, cattle and horses cannot be used as a source of kinetic energy for power generation. ”

Zhang Ziyun seemed to understand and asked: "What is it used for?" ”

"One is to use the kinetic energy of water flow, like a waterwheel. One is to use the kinetic energy of water vapor. Wang Yue said.

Xu Tingzhen is more concerned about the application of electricity: "With electricity, why do electric lights shine, why do refrigerators stay cold, and why do washing machines turn?" ”

Wang Yue put his hand on his forehead and said: "Ladies and gentlemen, there are many applications of electricity, and the principles are different, so I can't finish talking about it at all." I will briefly say that the filament of this electric lamp is made of a material called tungsten, which will emit light stably when the current passes through the tungsten filament because of its resistance and the characteristics of its own material, but it will not burn out easily. This is called the conversion of electrical energy into heat and light energy. ”

"The rotation of the drum of the washing machine is actually the process of converting electrical energy into kinetic energy. The wires keep passing through the magnets, and there is an electric current. So let's do the other way around, make a device where an electric current passes through a wire, and the magnet will move around the wire. ”

"Do you understand?"

Seeing that they were stunned and looked at themselves, Wang Yue had no choice but to ask.

Xu Ting really understands why Zhang Ziyun likes this Wang Yue, this Wang Yue is really erudite, and the science he says is not only rigorous, but also practical. The point is that there has never been a school since ancient times, and it is not an exaggeration to call it a grandmaster.

Zhang Ziyun was fascinated by this listening and thought this science was very interesting.

"Tell me what's going on with the refrigerator!" Zhang Ziyun chased after him.

Wang Yue said helplessly: "You just know the principle of electricity, and the refrigerator has to be longer, and the content can be longer than everything I just said, and you can't understand it." I'll give you a refrigerator refrigeration manual, and you can read it slowly. ”

Zhang Ziyun thought about it, she wanted to know too much, why did the radio pronounce it? What's the deal with walkie-talkies? How can there be an image on the display screen in the car? And so on and so forth.

She pouted helplessly, "Okay! ”

Wang Yue smiled and said: "Don't be discouraged, if we can make the entire Jingshi use electric lights, this one thing alone will be able to go down in history." ”

Zhang Ziyun suddenly came to his senses and asked, "How can I let Jingshi use electricity?" ”

Xu Tingzhen and Hexiang also asked the same question, and they all experienced the convenience of electricity.

"I plan to build a thermal power plant in Shijingshan, but I am the only one who understands it. This power plant requires a large number of workers, so the cycle will be long. Wang Yue said.

Zhang Ziyun asked, "How long?" ”