Daming Town Haiwang

Chapter 1284, Electricity and Magnetism
General Laboratory of Beijing Institute of Mechanical Engineering.

Well, you heard it right, Zhu Houzhao named his laboratory the General Laboratory.

In the final analysis, what Zhu Houzhao loves the most is his career as a soldier. As for doing research, it is just one of his hobbies.

"How about it?"

"My laboratory is not bad."

When he came to the laboratory, Zhu Houzhao proudly showed Liu Jin his huge laboratory.

The entire huge laboratory covers a large area, collecting all kinds of weird things, and at the same time, you can see all kinds of very strange-looking mechanical devices.

It can also be seen that many researchers are conducting various experiments in groups. There are blackboards in each experimental area, and people are constantly discussing something from time to time, discussing the results of experiments, plans, and so on.

"It still looks a little bit~"

Liu Jin nodded slightly.

"What does it mean to look a little~"

"It took me a lot of money and thought to get it out."

"It's not an easy task to do experiments and research. Not only do you have to do research yourself, but you also have to think about how to lead your team to do research."

"Don't underestimate this laboratory, a lot of money is burned every day."

Zhu Houzhao curled his lips and said, Lao Liu is really ignorant.

My own laboratory is the best laboratory in the entire Ming Dynasty. It has all the latest instruments, equipment, etc., and there is a huge research team. Many things can be obtained by casual research.

Just like the clock and watch made last time, it was not too difficult, and it took the whole team some time to make it.

"Of course I know it cost a lot of money."

Liu Jin smiled and nodded.

It is very expensive to do research. It has been like this since ancient times. The investment is large. As for the profit, it depends entirely on God's will. This is why the scientific research of later generations is basically based on state investment, supplemented by enterprises, and private investment. It's so pitiful.

"Old Liu, tell me, what's so special about this electromagnetic field? Our entire team has been studying it for a long time, but so far there has been no breakthrough."

"I played with the magnet stone every day, but I didn't find out why."

Zhu Houzhao brought Liu Jin to a research platform. At this time, the researchers here, almost with a magnet in hand, were constantly conducting various researches, but they couldn't seem to find a way out after turning over and over again.

Liu Jin casually picked up a magnet and looked at it. These magnets are all natural magnets, and their magnetism is average and irregular.

"Old Liu, this magnet is very expensive, and it is very rare. There are not many magnets in the world. A small magnet like this costs three taels of silver!"

Zhu Houzhao also picked up a magnet and threw it around very casually. He was already tired of playing with this thing, and it seemed that it had no other use except for attracting iron.

"Have you now discovered and understood anything about magnets?"

Liu Jin nodded slightly. Natural magnets are indeed rare, and it is normal that they are more expensive. Moreover, there are compass on ships going out to sea now, which also need to be polished with magnets.

"Yes, there are some~"

"We found that there are some peculiarities about this magnet. For example, after the whole magnet is broken, it splits into several pieces, and each small piece is also magnetic."

"What's more, we mark the direction of each magnet. No matter in that direction, one end of it always points to the north. This is where it can be used to make a compass."

"In addition, we found that some magnets will attract each other, while others will repel each other."

"It can be used to attract iron and iron filings, but it cannot be used to attract metals such as copper, gold, silver and tin."

Zhu Houzhao nodded and said something that he and his team had researched.

"It seems that you really have no progress and breakthrough."

After listening to Liu Jin, he also laughed. These characteristics are the most common and easiest to find.

"Old Liu, don't pretend to be a wolf with a big tail, but tell me, what is the function of this magnet?"

Zhu Houzhao curled his lips and said as if you are very good. It is not easy to be able to sum up these things. Our team also took time to study.

"Of course it has many functions~"

"I asked Your Highness to study electromagnetism. Electromagnetism, electromagnetism, of course, must be connected together for research."

Liu Jin said confidently.

At any rate, those who have studied in elementary, middle and high schools in later generations know some basic things about electromagnetism.

"I really want to see how your electromagnetism is connected~"

Zhu Houzhao immediately became interested, and the people around who were doing research gathered here one after another. Everyone wanted to see what kind of tricks Liu Jin could play.

"Bring me some copper wire, and a compass, and a little stick."

Liu Jin looked at the people around him, smiled confidently, and then gave instructions to Liu Jin who was beside him.

"..."

Liu Jin was speechless immediately, I am serving His Highness the Crown Prince, not you.

But looking at the gazes of Zhu Houzhao and everyone around him, Liu Jin suddenly had nothing to say, and could only honestly look for the things Liu Jin needed, and he was also very curious about what kind of tricks Liu Jin could play. .

He followed Zhu Houzhao in this laboratory every day. To be honest, he already had deep attainments in mechanics, and he was also very familiar with electromagnetism.

Soon, he found the materials Liu Jin needed.

There are many kinds of things here in the laboratory, and you can find them casually.

According to the memory in his mind, Liu Jin quickly wound the copper wire around the two ends of a small wooden stick, then wound the copper wire once more, then placed a compass next to the copper wire, and at the same time found a relatively regular large stick. magnet.

Zhu Houzhao and everyone around looked very seriously. Even Liu Jin forgot the unhappiness just now and was waiting for Liu Jin's next experiment.

"Everyone, please look, this compass is pointing in the direction of the north, which is this direction~"

Liu Jin took out the chalk and said while making a few numbers.

"Next, I'm going to do the experiment of cutting the magnetic field, please watch carefully."

Liu Jin gently picked up the small wooden stick wrapped with copper wire. After hearing the prompt, everyone watched carefully one by one, not daring to breathe, for fear of missing the wonderful moment.

I saw Liu Jin holding a small wooden stick and moving back and forth beside the big magnet. With the movement of the small wooden stick, the compass, which was originally motionless, began to jump, pointing to the north for a while, and pointing in the direction of the copper wire for a while.

"This?"

Zhu Houzhao and the others slightly widened their eyes.

And Liu Jin continued to move the small wooden stick back and forth with a smile. As the frequency of the movement became higher and higher, the frequency of the compass swing became larger and larger. When it got to the back, the direction it pointed to had completely changed. , no longer pointing north, but level with the copper wire.

"I'll try~"

Seeing this scene, Zhu Houzhao's curiosity and interest came all at once, and before Liu Jin stopped, he said anxiously.

"OK~"

Liu Jin stopped and handed the small wooden stick to Zhu Houzhao.

Zhu Houzhao took the small wooden stick and imitated Liu Jin. He used the small wooden stick to move back and forth next to the magnet. With each movement, the compass would swing accordingly. The greater the frequency of movement, the greater the frequency of swing. .

"What is the principle of this?"

Zhu Houzhao stopped and fell into deep thought immediately.

"The principle is very simple~"

"Magnetism can generate electricity, and electricity can also generate magnetism~"

"The magnetic field we cut the magnet can generate electricity. When the electricity passes through the copper wire, a new magnetic field is formed around it, and the new magnetic field will affect the compass and affect its pointing."

For Liu Jin from later generations, it is not difficult to understand that electricity generates magnetism, and magnetism generates electricity, so it is natural to say it.

But as soon as Liu Jin finished speaking, someone next to him asked: "This can only show that magnetism can be transferred, but it doesn't mean that magnetism can produce electricity. We haven't seen electricity at all, so it can't explain that magnetism can produce electricity."

"Yes, this should be the transfer of magnetism. The cutting magnetic field transfers magnetism and affects the compass."

Someone also nodded and said.

When Liu Jin heard this, he was so angry that he was half dead. I'll tell you directly that magnetism generates electricity, and electricity generates magnetism. You have to carry it with me?

But looking back, they were right to think so.

They have not received the five-year compulsory education of later generations, and they do not know these things about electromagnetism. They are good at thinking and constantly summarizing, which is already very good.

To study this kind of thing is to constantly explore and summarize, and it is a good thing to be good at thinking.

"Magnetism and electricity should be separated."

Zhu Houzhao put down the small wooden stick in his hand, and said with certainty.

"However, Lao Liu, you never lie. Since you said that electricity and magnetism are related, that magnetism can generate electricity, and electricity can generate magnetism, then it must be so."

"The key now is how to prove this point. Just cutting off this magnetic field does not mean that magnetism generates electricity."

Zhu Houzhao touched his chin, also lost in thought.

"..."

Liu Jin also has nothing to say, isn't this enough to prove the relationship between electromagnetism?

But if you think about it carefully, it seems that there is nothing special about just moving the compass. Obviously, it is not enough to rely on such an experiment if you want to convince people of the relationship between electromagnetism. For other experiments, it is best to let them see the electric spark.

"It seems that we still need to create a simple generator device first, so that electricity can be continuously generated, and then it will be much easier to conduct other experiments."

　Liberal arts student, I don’t know if I wrote it right~
　　
　
(End of this chapter)