Otaku Engineer in Great Tang Dynasty

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Out of nothing?

How does this sound like a conjuration?

But then again, everything Li Zexuan said in today's class made the students feel like he was playing tricks!

Throwing a needle to count the ancestors, glazed glass to divide sunlight, double slits to become stripes, and the iron box just now sent a message, making them feel as if they were dreaming, very unreal.

At this moment, Li Zexuan stretched the wire from the iron box into the water basin (this water basin is not made of wood, but made of colored glass), then filled the two thin glass tubes with water in the basin, and pressed the Hold the spout and put it upside down into the basin.

Next, Li Zexuan inserted the two enameled wires into the two glass tubes.

"Everyone, look carefully, some interesting phenomena will happen in a while!"

Li Zexuan raised his head and said with a smile. Then he called Mo Zhong and whispered a few words in a low voice. Mo Zhong led the order to go out, while Li Zexuan pressed a button on the iron box next to him. Suddenly, the students in the auditorium found Liu Li. The enameled wire inside the tube actually started to bubble.

"Hey? Is the mountain chief blowing bubbles for our show?"

Cheng Chumo was happy when he saw this, and whispered from the bottom.

The ancients would also blow bubbles, soak soaphorns in water, and chop a thin bamboo to play with bubbles, but soaphorns are too expensive, and few parents would allow their children to be so reckless, but well, Cheng Chumo I played a lot when I was a kid.

After about ten breaths, the water in one glass tube in the water basin has been completely emptied (this tube is hydrogen), but there is still half of the water in the other glass tube, Li Zexuan ignores it. , let the gas in the glass tube overflow, and when the water in the other glass tube was completely emptied, Li Zexuan pressed the button on the iron box again, and the enameled wire in the basin stopped bubbling.

"Master, is this electrolyzed water~?"

Someone off the field stood up and asked.

It was Wang Ji. The first volume of the "Chemistry" textbook of the academy included the experiment of electrolysis of water, but he had only read the description in the book, and had not seen the demonstration in real life, and he had never done it himself, because he did not know how to Where to get electricity! So until this time, he felt a little familiar.

"Mr. Wang has good eyesight! This is the electrolyzed water experiment!"

Li Zexuan praised, and then said to the students: "The two glass tubes in my hand now contain the gas I just made with water. This is different from the air you breathe every day!"

"Come on, what's the difference?"

The students shook their heads in disbelief. In their opinion, the two colored glass tubes Li Zexuan was holding had no color in them, but were they just filled with two tubes of air? What can be strange?

Li Zexuan didn't make any excuses. It just so happened that Mo Zhong came in short of a brazier at this time. Wherever he went, the students all avoided it because it was so hot!

Li Zexuan was not too hot. He went forward and wrapped his left hand with a damp cloth. He pulled out a thin red wire from the brazier. He took it out and said, "The next moment is to witness the miracle!"

Hearing the words, the students all widened their eyes and looked towards this side intently.

I saw Li Zexuan's right hand loosening the thumb blocking the mouth of the glass tube, and his left hand quickly put the red-hot iron wire in.

"呲呲~!"

The red iron wire suddenly burned in the glass tube, and a bright fire was emitted!

"Damn it, iron can burn too? Am I right?"

Cheng Chumo shouted loudly.

The rest of the students were also shocked and felt incredible.

After the fire was extinguished, Li Zexuan smiled mischievously, and then went to take out another glass tube. In his left hand, he took the burning wooden stick handed by Mo Zhong. The students did not know why, but the College Chemistry Department. All the teachers buried their heads and covered their ears.

"Bang~!"

The students saw Li Zexuan put the stick with the flame on the mouth of the glass tube, and then they heard an explosion that was not particularly loud, but definitely not small.

"I rely on!"

Except for the teachers from the Chemistry Department who had been prepared, everyone in the auditorium was taken aback.

Li Zexuan put down the test tube, clapped his hands, and after everyone was quiet, he said, "Now do you believe I turned water into two different gases~?"

The students were speechless, their hearts really believed in your evil, and they didn't know to tell us in advance before the explosion.

"It turns out that the electrolyzed water experiment recorded in the textbook is actually true? This old man is considered to be convinced. The leader of the mountain is really a gift!"

Wang Ji said with emotion.

Li Zexuan smiled and said, "Mr. Wang is wrong." Then he gave Mo Zhong a wink. The latter nodded quickly and turned to go out. After a while, Mo Zhong moved in a half-person-high thing with a Covered with red cloth. Mo Zhong moved the big baby to the lecture table and backed away.

Li Zexuan stood on the podium and said downwards, "Okay, that's all I'll play with you today. Next, I'll show you some good things!"

After all, he lifted the red cloth, and a large blue ball, supported by the bracket, stood on the table, and it was immediately displayed in front of everyone.

"What's this? It's two laps bigger than football?"

"You know football as a kid!"

study

The students were talking a lot, but Xiao Deyan from the Geography Department stood up tremblingly and said, "Shan Chang, this, this is..."

Li Zexuan nodded and said, "Mr. Xiao, that's right! This is the earth, it should be said that it is a model made by imitating the earth! I call it a globe!"

After that, he looked at the students again and said loudly, "Students, the ground we are stepping on is not flat, and it is nonsense to say that the sky is round and the place is round! We all live in such a big ball. Above, specifically, your husband will tell you in the future! From now on, I will place this globe in front of the Guanghua Building. Every time you pass by, you must take a good look at him and the world we live in. Absolutely a new world that you have never known before!

Also, the little games I played with you before are all very meaningful. Don't ask me about the specific principles. I hope that when you graduate from Yanhuang Academy, you can fully understand these questions, and it is not in vain. All the hard work I and the gentlemen of the academy have paid for you! Okay, get out of class is over! All go to rest! This concludes today's class! "

"Clap clap clap~!"

At this moment, all the teachers and students couldn't help but stand up and applaud Li Zexuan. Today's class is destined to go down in history! And this class really gave them too much shock, and made them feel extremely fortunate in their hearts, fortunate that they chose Yanhuang Academy! Otherwise, with such advanced knowledge, where would they go to learn it!

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