I Build an Aircraft Carrier in the Ming Dynasty

Afterwards, Wu Changqing had the printed book "Elementary Physics" distributed and exhorted, "This book is extremely precious, I hope you can take good care of it. At the same time, please take a look at yourself first, if there is any problem, the class will be officially started tomorrow. Time to ask me questions."

When Feng Xianzhong and Liu Tao got this book, they were like treasures. Their future official fortunes are all in this booklet.

The others are similar, and they are placed carefully.

Wu Changqing talked about some other precautions, and then left first. He still has a lot of important things to deal with and make decisions.

Some of the rest of the students went home, while others lived in the student dormitory in the university hall.

Feng Xianzhong and Liu Tao are both from Suzhou and both have houses in the city. However, in order to carry out the spirit of hard study and not waste time on the road, they also lived in the student dormitory.

Back in the dormitory, Feng Xianzhong hurriedly opened this elementary physics book.

The first page is the table of contents, on which is written mechanical motion, acoustic phenomena, change of state of matter, light phenomena, mass and density...

Feng Xianzhong was at a loss for so many new words.

He knew the meaning of motion, but what was mechanical motion?

He can understand the phenomenon of sound literally, but he can't figure out what else to learn about the common sense of sound, and what is the use of learning it?

After simply looking at the table of contents, he began to read the text.

Junior high school physics is not easy for children to understand, but for adults like Feng Xianzhong, it is actually very easy to understand.

It's just that there are many new terms in the book, and it was difficult for him to adapt to it for a while.

Looking at it, Feng Xianzhong was fascinated by it. Humans are always curious about the unknown, and the content in this book has always been revealing common phenomena in life, which is very interesting.

"It turns out that the sound is transmitted like this. But, how to prove what is said in this book?"

Feng Xianzhong muttered to himself.

The junior high school physics written by Wu Changqing is very different from the one he used in school before. Many things have been deleted and some other things have been added.

For example, for the unit of length, he will redefine the unit of meter. You must know that the unit of length used in the Ming Dynasty is still zhang, and Wu Changqing is not used to it.

Most of the knowledge in the book is just a simple conclusion without explaining how to verify it. For example, sound is transmitted through the air. Wu Changqing has no way to verify it. He can only tell the students that it is transmitted in this way.

This is also impossible. It is indeed too radical to impart this knowledge in this era.

"Brother Feng, can you possibly understand what is written in this book?"

Liu Tao had a bitter look on his face. He was looking at it just now, but what he saw was a confused look.

"It's generally understandable, but there are also many questions."

Feng Xianzhong said.

Geniuses like Feng Xianzhong are rare after all, and most of the readers who have read the textbooks want to cry without tears. They found that the official position in Wu Changqing's hands was not so easy to take.

The next day, the first physics class in the university hall.

Wu Changqing came over with some rulers and prisms. At this moment, he didn't have any image of a general. He was just like a people's teacher, just a pair of glasses.

"Physics, the truth of all things. Why do heavy objects fall from the sky, but not the moon and the sun? Why do we often see lightning first and then hear thunder? Why ignite gunpowder, and the bullet in the gun can Shoot a hundred meters away?

The physics we study is to unravel the truth of how everything works in this world. "

Wu Changqing said in high spirits, in front of these ancient people, his sense of superiority was overwhelming, because he knew so much more than others.

Unraveling the principle of all things, this tone is quite big, and some students are excited when they hear it.

"Yesterday, after you went back and read the books, you can gain something, but do you have any questions?"

Wu Changqing asked.

Feng Xianzhong immediately raised his hand. This is the rule Wu Changqing said yesterday. Before asking a question, he needs to raise his hand.

He is very eager to express himself in front of Wu Changqing and show his talent. Only in this way will it be easier to be recruited as a staff officer.

Wu Changqing motioned for him to speak, and Feng Xianzhong stood up and said, "After reading the book, I realized that the speed of light is faster than that of sound, so we see lightning first and then hear thunder. It's just that, What I don't understand is why light is faster than sound, by how much."

"..."

Wu Changqing was almost stunned. He found that he seemed to underestimate the IQ of the ancients. This person who answered the question was quite remarkable, at least with a very strong memory.

In just one day, I finished reading the acoustic part and the optical part, and remembered them all.

Wu Changqing knew that he had met the legendary genius. Comparing IQ with this kind of genius is a very stupid behavior, and Wu Changqing did not do it.

Anyway, no matter how smart this person is, he is still just his student.

Wu Changqing said: "The answer is very good, it seems that you read the book carefully. As for why the light you said is faster than the voice, this teacher does not know, I can only tell you what I know. As for why the light is faster than the sound, this teacher is waiting for you to be better than the blue, waiting for you to decipher it."

Wu Changqing doesn't mean that he really doesn't know why light travels faster than sound, but it's just too complicated to explain. teach it

, or have to go step by step and start simple.

Now talking to them about the loss of ability in the transmission of sound waves is undoubtedly talking about heaven. Even Wu Changqing himself is not very clear about this part of knowledge.

After being praised by Wu Changqing, Feng Xianzhong was a little excited. No matter how young Wu Changqing is, he is a serious second-rank officer, Duke Wu.

It is heartening to be recognized and praised by such a character.

While the others cast all kinds of envy, jealousy and hatred, Feng Xianzhong had already walked in front of them.

Although they don't think it's useful to know that light travels faster than sound, but being able to get Wu Changqing's appreciation and praise means that they will be able to become officials in the future.

As a result, some people who have read the book and have some experience also raised their hands cautiously and expressed some of their own experiences and questions.

This is Wu Changqing's first batch of students, and he answered very patiently. Basically every question, he will explain in plain language.

As for some things that he could not explain himself, or that were too advanced, he said that he would talk about it later, and now start with the simple ones.

The first class teaches mechanics, which is a very basic and practical knowledge point. After a lecture, most of the students understood it, but there were also a small number of people who really couldn't understand it.

This part of the people can't understand and can't help, Wu Changqing doesn't have so much time to tutor.

His identity is destined that he can only teach some geniuses to become talents, and ordinary people will definitely not be able to keep up with his footsteps.