Chapter 451 Conclusion Hearing the emperor's words, although he was still nervous, his mind was under his control.
He first saluted Li Shimin, then saluted Ji Song, bowed and said, "Can students start now?"
Ji Song smiled and nodded: "Let's get started! You are the protagonist now, don't worry about anything else."
Zheng Ming nodded and calmed down a little more.
Li Shimin also nodded. Being able to calm down so quickly showed that this student has a good mind and is a promising talent.
He asked Li Gang beside him: "Does Master Li know the origin of this student?"
Li Gang didn't contradict him now. His student performed well and his face was bright. He said with a rare smile: "This child is a descendant of the Zheng family in Xingyang, but he has already been out of the fifth service, and his family has fallen into decline. Now he is the only one with his father. "
"Some time ago, I stood out among more than [-] people in the Ji Kao test, ranking eighth. He has good insights in the "Book of Changes" and is also hard-working. He is a good kid."
It was rare for Li Gang to praise a student so much, which surprised Li Shimin.
He comes from a famous family, but his family is in a poor state. He has excellent knowledge and a good character and mind. Isn't this the talent he is looking for?
Because I was young now, I only had to study hard in the academy for three years, and then go to the officialdom for a few years to polish myself. As long as nothing happened, I would be a rare talent.
"Not bad!"
Li Shimin nodded and smiled, but he didn't say anything. It was still early and he was not in a hurry.
Zheng Ming motioned to several students on the stage, and soon someone brought some things up.
Ji Song was a little surprised. It seemed that he had been prepared for this! There weren't many things he brought with him, they were almost the same as what Ji Song had used for display that day.
Zheng Ming stood on the stage, took a deep breath, and said loudly: "After Mr. Riji showed it that day, the students were also very shocked and deeply felt the magic of gewu."
"Yes, it's magical!"
"Before this, many of us have seen Nitrate, but apart from using it as medicine, no one thought that it could also be used to make ice. This is the magic of Gewu Science."
Zheng Ming became more and more relaxed on stage. He was a little nervous at first, but became very excited when he got into the mood.
"Flatterer, who doesn't know this? Do you even need to say it?"
Li Tai was so disgusted on the sidelines that he had to say all the things he wanted to say. It was extremely disgusting.
Although he spoke in a low voice, Ji Song had been practicing martial arts for many years and his hearing and eyesight were the most basic. He immediately glared when he heard this.
When Li Tai saw this, he immediately shut up and looked at his nose and heart, as if what he just said was not his! Seeing Li Tai shut up, Ji Song turned his gaze and looked at Zheng Ming in Taichung.
"After I went back, I was puzzled. Why is this? Why can the saltpeter we commonly use make water freeze in the sweltering heat? Later, in order to verify the truth, I tried it with warm water and boiled water. Except for the increase or decrease in the amount of nitrate, without exception, the water froze.
This makes me even more curious, what is the meaning of this? "
He used rhetorical questions, and both Li Shimin and others on the stage fell into deep thought.
Yes, why is this? "Everyone, please see!"
When he came to the props, one of the basins of water looked normal, but one of the basins of water was steaming. It looked like boiling water.
He first slowly poured the saltpeter into the cold water. As the saltpeter increased, white gas came out of the basin. Soon the basin of water turned into ice, and there was a hint of coldness.
He did not stop, but came to the basin of hot water and began to slowly add saltpeter.
But everyone watching found that the same size basin, the same amount of saltpeter, and the same time, but this time the saltpeter did not freeze, it just stopped steaming and the water cooled down.
"I see, why didn't I think of that!"
At this time, some students had already seen something, and suddenly felt a little annoyed, as if they had missed a hundred million.
"I also understand, so that's how it is."
"Me too." The voice below became louder and louder, and it was already a bit noisy.
"quiet!"
Ji Song frowned and shouted loudly.
I don't know anything else about practicing Daoyin Technique over the years, but my body has been strengthened a lot. When everyone heard this sound, it was like a wake-up call, and they suddenly became quiet.
"Your Majesty, this kid has not made a move for several years, but his kung fu is really good!" Yu Chigong said to Li Shimin after hearing this.
Li Shimin nodded and said with a wry smile: "I don't know how this kid practices. He usually keeps quiet, and even his body shape has not changed. But whether it is strength or martial arts, he is second to none in the Tang Dynasty. It’s a shame on the battlefield.”
Yuchi nodded in agreement when he heard this, and felt that it would be the biggest waste for Ji Song not to go to the battlefield.
"You can't say that. Although this disciple of mine is good at martial arts, his role in the academy is much greater than on the battlefield.
On the battlefield, there are only a hundred enemies at most, but in the academy he can teach ten, a hundred, and the first hundred you let such a person go to the battlefield to fight and fight for his life?Are you stupid? Li Gang retorted.
"you"
Yuchi was furious, was he talking about himself?
"Forget it, forget it, keep watching, keep watching!"
Li Shimin quickly stepped forward to smooth things over, but he didn't dare to make a joke!
"Humph!"
"Humph!"
The two of them were tired of looking at each other, so they both snorted and said nothing.
As soon as they were interrupted, Zheng Ming's experiment had come to an end.
I saw that he added twice the amount, which allowed the hot water to freeze. At this time, the audience was also talking about something with each other.
"Zheng Ming, the test has been completed. Now tell everyone your conclusion." Ji Song said.
"promise!"
He took a deep breath and said loudly: "After many experiments, I have reached a conclusion!"
Everyone on and off the stage became quiet at this time, ready to hear Zheng Ming's conclusion.
"First, it is undeniable that nitrate, the mineral we are accustomed to, is what causes water to freeze.
Second, nitrate has the effect of absorbing heat. It will absorb the heat in the water to itself, thereby lowering the water temperature until the water freezes. ,
Third, as the water temperature and the amount of water increase, the amount of nitrate required also increases, and vice versa! Fourth, as long as it does not come into direct contact with saltpeter ice, it can be eaten directly. "
After he finished speaking, he bowed to Ji Song and said, "The student has finished speaking, please judge."
Ji Song smiled happily.
"Very good, Zheng Ming, you are really good. You clearly discussed the essence of saltpeter in freezing water, and you also understood the role of saltpeter. This is very good. Although there are still shortcomings, it is enough."
"insufficient?"
Zheng Ming was stunned for a moment, then bowed and said: "Please give me some advice, sir!"
Ji Song smiled and said: "Don't worry, wait until others are finished. You can go down first!"
Zheng Ming also understood that he was anxious, how could he say it at this time! So, he bowed to everyone and stood aside, waiting for other students to discuss! (End of this chapter)