General Laboratory of Beijing Machinery Research Institute.
Well, you heard it right, classmate Zhu Houzhao named his laboratory the General’s Laboratory.
After all, what Zhu Houzhao loved most was his military career. As for research, it was just one of his hobbies.
"How about it?"
"My laboratory is pretty good, right?"
Arriving at the laboratory, Zhu Houzhao was very proud to show his huge laboratory to Liu Jin.
The entire huge laboratory covers a large area and collects all kinds of weird things. At the same time, you can see a variety of very strange-looking mechanical devices.
You can also see that many researchers are conducting various experiments in groups. There are blackboards in each experimental area. From time to time, people are constantly discussing something, discussing the results of experiments, plans, etc.
"It looks pretty cool~"
Liu Jin nodded slightly.
"What does it mean to have some looks~"
"I spent a lot of money and thought on this."
"It is not an easy task to conduct 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, "Old Liu is really ignorant."
My own laboratory is the best laboratory in the entire Ming Dynasty. It has the latest instruments, equipment, etc., as well as a huge research team. Many things can be found through casual research.
Just like the clock we made last time, it wasn't 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.
Research is very expensive. It has been like this since ancient times. The investment is huge. As for the income, it depends entirely on God’s will. This is why scientific research in later generations is basically based on state investment, supplemented by enterprises, and private investment.
It's so pitiful.
"Old Liu, tell me, what is so special about this electromagnetic field? Our entire team has been studying it for a long time, but there has been no breakthrough so far."
"I play with the magnet stone every day, but nothing happens."
Zhu Houzhao took Liu Jin to a research station. At this time, the researchers here, almost with a magnet in hand, were constantly conducting various studies, but after turning over and over, they seemed to be unable to find a way out.
Liu Jin casually picked up a magnet and looked at it. These magnets were all natural magnets, with average magnetism and irregular shapes.
"Old Liu, this magnet is very expensive and very rare. You can't find many magnets all over the world. A small magnet like this costs three taels of silver!"
Zhu Houzhao also picked up a magnet and tossed it around very casually. He was tired of playing with it. Apart from attracting iron, it seemed to have no other use.
"Have you discovered anything about magnets now?"
Liu Jin nodded slightly. Natural magnets are indeed rare. It is normal that they are more expensive. Moreover, ships going out to sea now have compasses on them, which also need to be polished and made with magnets.
"Yes, there are some~"
"We found something strange about this magnet. For example, after breaking a complete magnet, it split into several pieces, and each small piece is also magnetic."
"Also, we mark the direction of each magnet. No matter which direction it is, one end of it always points north. This is where it can be used to make a compass."
"In addition, we found that some magnets attract each other, while others repel each other."
"It can be used to absorb iron and iron filings, but it cannot be used to absorb metals such as copper, gold, silver, and tin."
Zhu Houzhao nodded and said some things that he and his team had researched.
"It seems that you really have made no progress or breakthrough."
Liu Jin also laughed after hearing this. These characteristics are the most common and easiest to discover.
"Old Liu, don't pretend to be a big-tailed wolf. Instead, tell me, what is the function of this magnet?"
Zhu Houzhao curled his lips and said as if you are very powerful. It is not easy to sum up this. Our team also spent time to study it.
"Of course it has many functions~"
"I asked Your Highness to study electromagnetism. Of course, electromagnetism and electromagnetism must be studied together."
Liu Jin said very confidently.
At any rate, those who have studied in elementary school, junior high school and high school in later generations know some basic things about electromagnetism.
"I would like to see how your electromagnetism is connected~"
Zhu Houzhao immediately became interested, and people who were doing research around him also gathered around. Everyone wanted to see what tricks Liu Jin could play.
"Bring me some copper wire, a compass, and a small wooden stick."
Liu Jin looked at the people around him, smiled confidently, and then gave instructions to Liu Jin beside him.
"..."
Liu Jin was immediately speechless. I serve His Highness the Crown Prince, not you.
But looking at the gazes of Zhu Houzhao and the people around him, Liu Jin suddenly had nothing to say. He could only honestly go find the things Liu Jin needed, and he was also very curious about what tricks Liu Jin could pull off.
.
He followed Zhu Houzhao in the laboratory every day. To be honest, he already had a deep knowledge in mechanics and was very familiar with electromagnetism.
Soon, he found the materials Liu Jin needed.
There are so many different things in the laboratory that you can find them anywhere.
According to the memory in his mind, Liu Jin quickly wrapped the copper wire around both ends of a small wooden stick, then wound the copper wire around again, then placed a compass next to the copper wire, and also found a relatively regular large piece.
magnet.
Zhu Houzhao and everyone around him looked at it carefully. Even Liu Jin forgot about his unhappiness just now and was waiting for Liu Jin's next experiment.
"Everyone, please see, the compass is pointing to the north, that is, this direction~"
Liu Jin took out the chalk and made a few numbers while saying this.
"Next, I'm going to do an experiment on cutting the magnetic field. Please pay attention carefully."
Liu Jin gently picked up the small wooden stick wrapped with copper wire. After hearing the prompt, everyone looked at it carefully, not daring to breathe for fear of missing the wonderful moment.
I saw Liu Jin holding a small wooden stick and moving it back and forth next to the big magnet. As the small wooden stick moved, the originally motionless compass began to beat, pointing to the north for a while, and then pointing in the direction of the copper wire.
"this?"
Zhu Houzhao and everyone widened their eyes slightly.
Liu Jin smiled and continued to move the small wooden stick back and forth. As the frequency of movement became larger and larger, the frequency of the compass swing also became larger and larger. At the end, even the direction it was pointing had completely changed.
, no longer points to the north, but remains level with the copper wire.
"I'll try~"
Seeing this scene, Zhu Houzhao's curiosity and interest suddenly aroused, and before Liu Jin could stop, he said anxiously.
"Okay~"
Liu Jin stopped and handed the small wooden stick in his hand 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. The greater the frequency of movement, the greater the frequency of swing.
.
"What is the principle behind this?"
Zhu Houzhao stopped and immediately fell into deep thought.
"The principle is very simple~"
"Magnetism can generate electricity, and electricity can also generate magnetism~"
"The magnetic field when 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, who came from a later generation, it was not difficult to understand that electricity generates magnetism and magnetism generates electricity, so he naturally said it.
But as soon as Liu Jin finished speaking, someone next to him asked: "This only shows that magnetism can be transferred, but it does not mean that magnetism generates electricity. We have not seen electricity at all, so it cannot mean that magnetism generates electricity."
"Yes, this should be the transfer of magnetism. The cutting magnetic field transfers magnetism and affects the compass."
Some people also nodded and said.
When Liu Jin heard this, he was almost furious. I tell you directly that magnetism generates electricity and electricity generates magnetism. Do you have to bear with me?
But when I think about it, they are right to think so.
They have not received the five-year compulsory education of later generations and do not know about electromagnetic things. They are good at thinking and constantly summarizing. This is already very good.
Studying this kind of thing means constantly exploring and summarizing. 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, magnetism can generate electricity and electricity can generate magnetism, then it must be so."
"The key now is how to prove this. Just cutting this magnetic field does not mean that magnetism generates electricity."
Zhu Houzhao touched his chin and fell into thinking.
"..."
Liu Jin was speechless. Isn't this enough to prove the relationship between electromagnetism?
But when I think about it carefully, it seems that it just makes the compass move, there is nothing special at all. If you want to make people convinced of the relationship between electromagnetism, it is obvious that such an experiment is not enough. You must design a
For other experiments, it is best to allow them to see electric sparks.
"It seems that we need to make a simple generator device first, so that we can continuously generate electricity, and then it will be much easier to conduct other experiments."
