vrcanaries Chapter 906
Chapter 906
Xu Miao has a rather stubborn personality, otherwise he would not have insisted on studying material changes despite everyone's doubts.
This time he was impressed by Wei Wu, and he decided in his heart that Wei Wu was the mentor who could guide him onto the bright road.
He used this stubbornness in the matter of Wei Wu becoming his disciple, so everything Wei Wu said was the truth to him.
He firmly remembered the words "Bind the knowledge he has learned and future achievements with the interests of his family and country".
Seeing the expression on his face, Wei Wu nodded in satisfaction, and then asked:
"Starting tomorrow, you will officially study with me. So now, do you have any questions?"
In fact, Xu Miao had a lot of questions in his mind for a long time, but Wei Wu was giving a lecture and doing an experiment just now, so he didn't want to disturb him.
Now that Wei Wu had asked, Xu Miao hesitated and immediately asked:
"Teacher, I wanted to ask you this question just now when we were at the Imperial Hospital. You said that saltpeter absorbs heat and lowers the surrounding temperature."
"But why does saltpeter absorb heat? And saltpeter is obviously not warm at all when you hold it in your hand."
"But once it dissolves in water, it absorbs heat and makes the water cool. Why is that?"
Wei Wu thought Xu Miao would first ask how to learn chemistry from the basics, but he didn't expect that this was what he was thinking about.
However, Wei Wu admired this strong attitude towards knowledge, so he explained:
"I can explain this to you, but you might not understand what I'm saying. So, take some paper and pen and write down what I'm saying."
"When you learn chemistry in the future, you will understand what I am saying now."
Fortunately, this is a classroom, and paper and pen are basic equipment, so Xu Miao didn't have to look for them too much.
Seeing that Xu Miao was ready to record, Wei Wu slowly spoke:
"The main component of saltpeter is potassium nitrate, which dissolves when it comes into contact with water, and the saltpeter molecules change from a solid to a solution state."
"The dissolution process is an energy transfer process, where chemical energy is converted into kinetic energy and thermal energy of water molecules, increasing the overall energy of the system."
"To convert energy from the initial state to a higher energy state, a large amount of heat must be absorbed to achieve energy balance."
The fact is just as Wei Wu said, Xu Miao couldn't understand what he was saying at all, it was like listening to a foreign language.
What water molecules, kinetic energy and thermal energy, higher-level energy, and energy balance are all words I have never heard of.
In fact, to be honest, if Wei Wu hadn't been studying hard on the textbooks during this period, he himself wouldn't understand these things.
Not to mention Wei Wu, even in later generations, at least more than 50% of people would not be able to say what he is saying now.
If you are not a major in the relevant field, you will forget it quickly even if you have learned it. Who would bother to remember these things in their head?
Wei Wu kept complaining when he was studying. He said that he had never studied so hard when he was in school before.
But now, in order to spread scientific knowledge to the Academy of Science and Technology, he has to force himself to learn this knowledge.
Fortunately, his behavior just happened to be in line with the Feynman learning method, so he really learned the knowledge.
After Xu Miao stopped writing, Wei Wu continued to ask him if he had any questions and then answered them one by one.
Time passed slowly as the master and disciple talked, and Xu Miao stopped only when it got dark outside.
Of course, this doesn't mean that he didn't have questions he wanted to ask, but he knew it was getting late and he couldn't keep delaying his mentor.
Otherwise, with his thirst for new knowledge, he could keep asking questions until dawn without feeling sleepy, because he had been holding it in for too long.
Moreover, although he got answers to many questions, he could only say that he had heard them, and he didn't even understand what the answers meant.