Creating something out of nothing?
Why does it sound like a magic trick?
But then again, everything that Li Zexuan said in class today made the students feel like he was performing a magic trick!
The casting of needles, the splitting of sunlight, the double-slit turning into stripes, and the iron box message just now made them feel like they were dreaming. It was very unreal.
At this moment, Li Zexuan put the wire from the iron box into the basin (this basin was not made of wood, but of glass), then filled the two thin glass tubes with water, pressed the mouth of the tubes, and put them into the basin upside down.
Then, Li Zexuan inserted the two enameled wires into the two glass tubes.
"Everyone, look carefully, there will be some interesting phenomena in a while!"
Li Zexuan raised his head and smiled. Then he called Mo Zhong over and whispered a few words in his ear. Mo Zhong obeyed and went out. Li Zexuan pressed a button on the iron box next to him. Suddenly, the students in the auditorium found that the enameled wires in the glass tubes began to bubble.
"Hey? Is Yamachō performing bubble blowing for us? "
Cheng Chumo was happy when he saw this and whispered in the audience.
The ancients also knew how to blow bubbles. Soak the honey locust in water and cut a thin piece of bamboo, and you can play with bubbles. However, honey locust was too expensive, and not many parents would let their naughty children waste natural resources like this. However, Cheng Chumo played with it a lot when he was a child.
After about ten breaths of time, the water in one of the glass tubes in the basin had been completely drained (this tube was filled with hydrogen), but the other glass tube was still half full. Li Zexuan ignored it and let the gas in the glass tube overflow. When the water in the other glass tube was completely drained, Li Zexuan pressed the button on the iron box again, and the enameled wires in the basin stopped bubbling.
"Yamachō, is this electrolyzed water?"
Someone in the audience stood up and asked.
It was Wang Ji. The experiment of electrolyzing water was mentioned in the first volume of "Chemistry" of the Academy. However, he had only read the description in the book and had never seen a real person demonstrating it. He had never done it himself because he didn't know where to get electricity! Therefore, it was only now that he felt that he looked somewhat familiar.
"Mr. Wang, you have a good eye! This is the water electrolysis experiment! "
Li Zexuan praised, and then said to the students, "The gas in the two glass tubes in my hand was formed by the water I just used. It's different from the air you breathe every day!"
"Tsk, what's the difference?"
The students shook their heads in disbelief. In their eyes, the two glass tubes in Li Zexuan's hands were colorless. Weren't they just filled with air? What was so strange about it?
Li Zexuan didn't make any more excuses. At this time, Mo Zhong came in with a brazier. Wherever he went, the students all avoided him because it was hot!
Li Zexuan didn't mind the heat. He went forward and wrapped his left hand with a wet cloth. He pulled out a red thin iron wire from the brazier, and then put his right hand into the brazier. He held the glass tube filled with gas with his thumb and took it out. He said, "Now it's time to witness a miracle!"
Hearing this, the students all widened their eyes and stared at him.
They saw Li Zexuan's right hand releasing his thumb from the glass tube, and his left hand quickly put the red hot iron wire into it.
"Tsk, tsk ~!"
The red iron wire suddenly burned in the glass tube and emitted a bright fire!
"Damn, iron can also burn? Am I seeing things? "
Cheng Chumo shouted.
The other students were also shocked and felt that it was incredible.
After the fire went out, Li Zexuan smiled a little mischievously, and then took out the other glass tube. His left hand took the small burning wooden stick from Mo Zhong. The students didn't know what was going on, but the teachers of the Academy's Chemistry Department all buried their heads and covered their ears.
"Boom!"
The students saw Li Zexuan place the wooden stick with a flame at the mouth of the glass tube. Then, they heard an explosion that wasn't particularly loud, but definitely not soft either.
"Damn!"
Except for the teachers of the Chemistry Department who were already prepared, everyone in the auditorium was shocked.
Li Zexuan put down the test tube, clapped his hands, and waited for the crowd to quiet down. He said, "Now do you believe that I turned water into two different kinds of gas?"
The students were speechless. They thought to themselves, "How could we believe you? Why didn't you tell us in advance before playing with the explosion?"
"So the electrolysis experiment recorded in the teaching materials is actually real? This old man is convinced. Yamachō is really a genius! "
Wang Ji said with emotion.
Li Zexuan smiled and said, "Mr. Wang, you flatter me." Then he gave Mo Zhong a look, and the latter quickly nodded and turned to go out. A moment later, Mo Zhong moved in something half the height of a person, covered with a red cloth. Mo Zhong moved this big treasure to the podium and left.
Li Zexuan stood on the podium and said to the audience, "Well, that's all for today's games. Next, I'll show you something good!"
After that, he lifted the red cloth, and a big blue ball, supported by a bracket, stood on the podium and suddenly appeared in front of everyone's eyes.
"What is this? It's two times bigger than a football? "
"Boy, you only know about football!"
The students were talking about it, but Xiao Deyan from the Geography Department stood up shakily and said, "Yamachō, this, this is …"
Li Zexuan nodded and said, "Mr. Xiao, that's right! This is the earth. It should be said that it's a model of the earth! I call it a globe! "
After that, he looked at the students and said loudly, "Students, the earth under our feet is not flat. The saying that the sky is round and the earth is round is nonsense! We all live on a big ball like this. As for the details, your teacher will tell you later! From now on, I will put this globe in front of Guanghua Building. Every time you pass by, you must take a good look at it and see the world we live in. This is definitely a new world that you have never known before!
Also, the little games that I played with you earlier had a deep meaning. Don't ask me about the specific principles. I hope that by the time you graduate from the Yanhuang Academy, you will be able to fully understand these questions. Then, the painstaking efforts that I and the teachers of the academy have put in for you will not be in vain! Okay, class dismissed! Go and rest! Today's class is over! "
"Clap, clap, clap, clap ~!"
At this moment, all the teachers and students couldn't help but stand up and applaud Li Zexuan. Today's class was destined to go down in history! Moreover, this class had given them too much shock. It made them feel extremely lucky that they chose Yanhuang College in the first place! Otherwise, where would they go to learn such advanced knowledge?
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