Otaku Engineer in Great Tang Dynasty

Out of nothing?

How does this sound like a juggling?

Having said that, everything Li Zexuan said in today's class made the students feel like they were juggling!

Throwing needles to calculate the ancestral rate, the colored glaze to divide the sun, the double seams to become stripes, and the iron box just sent a letter, made 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 glaze), and then filled two small colored glass tubes in the basin with water, press Hold the nozzle and put it in the basin upside down.

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

"Everyone is watching carefully, and something interesting happens in a while!"

Li Zexuan raised his head and smiled. Then he called Mo Zhong and whispered a few words in a low voice. Mo Zhong took the order to go out. Li Zexuan pressed a button on the iron box next to him. All of a sudden, the students in the auditorium found Liuli The enameled wire inside the tube started to bubble up.

"Hey? Shan Chang is blowing bubbles for us?"

Cheng Chu silently heard this and said in a low voice.

The ancients also used to blow bubbles, soak the saponaria in water, and cut a piece of bamboo, and then you can play with blowing bubbles, but the saponaria is too expensive, and few parents would let their bears and children be so violent, but well, Cheng Chumo When I was young, I played a lot.

After about ten breaths, there was already a glass tube in the basin that had all the water drained (the tube was hydrogen), but there was still half of the water in the other glass tube, Li Zexuan ignored it. , Allowing the gas in the glass tube to overflow, and when the water in the other glass tube was all empty, Li Zexuan pressed the button on the iron box again, and the enameled wire in the water basin no longer bubbled.

"Shanchang, this is electrolyzed water~?"

Someone stood up and asked.

It is Wang Ji. The experiment of electrolysis of water is included in the first book of the "Chemistry" textbook, but he has only read the text description in the book, and has not seen a live demo, nor has he done it himself, because he does not know where to go. Go get electricity! So until this time, he felt a little familiar.

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

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

"Cut, what can be different?"

The students shook their heads in disbelief. From their point of view, the two colored glass tubes Li Zexuan was holding had no color in them, didn't they just contain two tubes of air? What's so strange?

Li Zexuan didn't make any excuses either. It just so happened that Mo Zhong had a short brazier and came in at this time. Everywhere he went, the students evaded because of the heat!

Li Zexuan didn’t feel too hot. He stepped forward to wrap his hand with a damp cloth, and pulled out a thin red wire from the brazier. Then he reached into the water basin with his other hand, his thumb buckled the glass tube filled with gas. He took it out and said: "Then it is time to witness the miracle!"

When the students heard the words, their eyes widened, and they looked at this side intently.

Li Zexuan's right hand loosened the thumb that blocked the mouth of the colored glaze tube, and his left hand quickly inserted the red wire in.

"Bah~!"

The red wire immediately burned in the glass tube, and emitted a bright flame!

"I rely on, iron can burn? Am I right?"

Cheng Chumo yelled.

The rest of the students were also shocked and found it incredible.

After the fire went out, Li Zexuan smiled mischievously, and then went to take out the other colored glaze tube. His left hand was the small burning stick that the Mo Bell handed over. The students didn’t know why, but the Chemistry Department of the Academy All of the teachers buried their heads and covered their ears.

"Bang~!"

The students only saw Li Zexuan put the wooden 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.

"Damn!"

Except for the teachers in the chemistry department who had already prepared, everyone in the auditorium was taken aback.

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

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

"The electrolysis water experiment recorded in the textbook turned out to be true? The old man is considered to have taken it off now. Shan Chang is really a boon to the heavens!"

Wang Ji said with emotion.

Li Zexuan smiled and said "Mr. Wang's absurd praise", and then he winked at Mo Zhong. The latter nodded quickly and turned to go out. After a while, Mo Zhong moved in a half-person tall object with something on it. Covered with red cloth. Mo Zhong moved the big baby to the lecture table, then stepped back.

Li Zexuan stood on the podium and said to the bottom: "Okay, there are so many mini games that I will take you to play today. Next, I will show you something good!"

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

"What's this? Two laps bigger than football?"

"You kid knows football!"

The students talked a lot, but Xiao Deyan from the Department of Geography stood up tremblingly and said: "Shanchang, this, this is..."

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

After that, he looked at the students again and said loudly: "Classmates~www.readwn.com~ The ground we step on is not flat. The saying that the sky is round and the place is nonsense! We are all Living on such a big ball, your husband will tell you more specifically! From now on, I will put this globe in front of the Guanghua Building. Every time you pass by, you must take a good look at him and look at us. The world you are in is definitely a new world that you have never known before!

Also, the little games that I did with you earlier are all very meaningful. Don’t ask me about the specific principles. I hope that when you graduate from Yanhuang Academy, you will be able to fully understand these issues. It is not in vain. All the gentlemen of the college and I have worked hard for you! Okay, get out of class is over! Go and rest! This concludes today's class! "

"Papa Papa~!"

At this moment, all the teachers and students couldn't help standing up and applauding Li Zexuan. Today's lesson is destined to be recorded in history! Moreover, this class really shocked them too much, and made them feel extremely grateful that they had chosen Yanhuang Academy! Otherwise, where would they go to learn such advanced knowledge!

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