When Li Zhi said that he wanted to continue enrollment, Yuan Tiangang and Li Su couldn't help frowning.

It's not that the two are unwilling to teach more students, but that the faculty of the college is a little insufficient, and the two are worried that they can't be busy.

When Li Zhi said that he would let the current group of students teach on his behalf, the two suddenly realized.

However, it didn't take long for Yuan Tiangang to raise another question.

"Your Highness, the academy can't provide official positions for these students, I'm afraid it will be difficult to recruit many students, right?"

Li Zhidao: "Although this is the case at the moment, if I want to develop Datang Technology, I naturally need more talents in this area.

In the future, once the state attaches importance to it, won't these people have taken steps to make progress? ”

Yuan Tiangang said: "Your Highness, the future is illusory after all, and it is difficult for the lower officials to use this to attract students!" ”

Li Zhi said: "Regardless of the rest, how many talents does Master Yuan think will be used in the workshop in the future?" ”

After listening to Li Zhi's words, Yuan Tiangang bowed down and said, "Xiaguan understands. ”

Li Zhi turned his head to Li Su and asked, "Has the sixth brother encountered something difficult recently?" The younger brother just had some time, but he could study it with the sixth brother. ”

Li Su said: "Brother Wei has been having a question recently, but he has never found an answer. ”

Li Zhi said curiously: "Why don't you say that the sixth brother will come and hear it?" ”

Li Su spoke: "Brother Wei accidentally saw the electric current before, but I don't know if I can see the sound waves. ”

Li Zhi smiled: "What's so difficult about this? ”

After saying this, he led the two of them to the laboratory.

I saw him pick up a rubber tube and put it on a glass funnel.

Then he scooped another scoop of water from the tank.

Then he found a tray made of stainless steel and asked Li Su to keep tapping.

As Li struck, he poured water into the funnel.

As soon as the water flows out of the rubber tube, it is distorted by the sound of the tray.

At this time, Li Zhi spoke: "The distorted water flow is caused by sound waves.

The sixth brother can now change the frequency of the knock and the volume of the sound, which can change the flow of water. ”

Curiously, Li Su tried many times, and finally determined that he had seen the sound waves.

Then he put down the tray in his hand and said again: "Such an observation is not specific enough, can the ninth brother have other ways to observe?" ”

Li Zhi thought for a while and said, "I'm afraid this is a bit complicated, but you can give it a try." ”

After finishing speaking, he asked Li Su to find a few glass mirrors.

Then he asked Yuan Tiangang to find a piece of black silk.

After that, while preparing the light source himself, he asked one of Li Su's students to sit on a tuning fork with a steel bar.

He then glued one mirror to the tuning fork and used a wooden frame to enclose the other mirrors in a circle.

Finally, he designed a swivel stand and placed the mirror in a circle on the stand.

Then he began to adjust the light source so that it was reflected through the mirror on the tuning fork to the mirror in a circle, and then to the silk.

At this time, everyone in the room looked at Li Zhi's operation curiously.

It wasn't until half a day later that Li Zhi finally completed all this.

Next, Li Zhi gently tapped the tuning fork with a copper rod.

Then he had one of the students turn the stand.

At this time, in the originally dimly lit laboratory, everyone suddenly saw that the light on the piece of silk, which was still straight, suddenly fluctuated.

As the sound diminished, so did the fluctuations on the silk until it finally returned to a straight line.

At this time, Li Zhi said: "Different objects emit different sounds, and the sound waves they emit are also different.

You can do more experiments in this area, or you can study it as a separate discipline. ”

At this time, Li Su opened his mouth and asked, "Ninth Brother can have books on this aspect?" ”

Li Zhi shook his head and said, "The junior brother has not studied this aspect in depth. ”

After saying this, he added: "But the younger brother knows some theories that may be helpful to the fourth brother. ”

Li Su said: "If the ninth brother has any ideas, come and listen to them, and my brother is quite interested in this." ”

Li Zhi said with a smile: "Sixth brother, don't be in a hurry, wait for the younger brother to sort out his thoughts and write them down, so that everyone can refer to them together." ”

After hearing this, Li Su nodded and said, "Ninth brother, you have to be faster, don't let you wait too long for your brother." ”

Li Zhidao: "Why didn't the sixth brother try to study electromagnetism and mechanics? ”

Li Su shook his head and said with palpitations: "Brother Wei wanted to study the generator, but he was almost electrocuted, so he decided to stay away. ”

After hearing this, Li Zhi was stunned for a moment, and then said with some surprise: "Sixth brother can't see the current on his body, right?" ”

Li Su nodded a little speechlessly.

Seeing him nodding, Li Zhi asked, "The younger brother obviously wrote the danger of electric current in the book, why is the sixth brother so careless?" ”

Li Su said a little depressedly: "The wire was obviously covered with rubber, but who knew that it was actually damaged in one place, and it turned out to be an electric for my brother." ”

Li Zhi smiled helplessly.

Such an unfortunate thing is really difficult for ordinary people to encounter.

I didn't expect the sixth brother, who has always been careful, to suffer a big loss in this.

Li Zhi smiled bitterly and said to Li Su: "According to the little brother's assumption, acoustic research will also have to deal with electricity in the later stage, and the sixth brother had better be prepared." ”

After listening to Li Zhi's words, Li Su frowned and said, "How can this be? ”

Li Zhi said: "At least that's how the younger brother understands it at the moment. ”

Li Zhi did not dare to say that most natural science topics would be related to electricity.

Some of the knowledge that he doesn't know very well is also vague and proposes the direction of development in the form of imagination.

Physics knowledge involves all aspects, and at Li Zhi's current age, he can have several specialties that can be described as genius.

However, if he reveals all the knowledge he has learned too soon, then he can't guarantee that he will not be kidnapped and sliced.

Besides, with the talent that Li Zhi has cultivated so far, too much knowledge can't be digested.

It is better to reveal the knowledge of a few subjects first, so that more people can conduct research together.

In this process, Li Zhi can continue to propose new knowledge as needed to supplement the previous subjects.

There are still decades to come, and Li Zhi believes that sooner or later he will be able to bring Datang into complete industrialization.

In this process, the key is to lay a solid foundation of mathematics, physics and chemistry.

It just so happened that Li Zhi wanted to develop the economy with peace of mind in the future, and in this process, he would inevitably have to deal with Li Su and others.

In this way, you can use this time to take out a little more dry goods stored in your brain.