Telescope.
Everyone was a little surprised.
The guests kept watching with telescopes and found that the distant scenery was much closer.
"This is amazing."
"It's really magical."
"This physics is simply miraculous."
"I didn't expect that Jin Shiteng, a person from the White Robe Kingdom, would have such academic attainments."
“…”
Jin Shiteng is happy for others to use his telescope and constantly tries to explain the principles. In order to explain the principles clearly, he has done many experiments. I have been writing my thesis for a long time, just for today.
There is no principle of confidentiality in mind. When you come to this podium, there is no need to hide anything.
After Jin Shiteng left the stage, it was the next person's turn. This person was also a citizen scientist, and what he discovered was actually a chemical phenomenon to be precise.
"For this discovery of mine, I haven't discovered the principle behind it so far. I'm sorry, I really can't explain why."
Everyone was a little curious.
But I saw this man put an aluminum plate on the table, and then sucked out a drop of mercury from a glass bottle.
"mercury?"
"What does this do?"
"Does the mercury want to come into contact with this aluminum plate?"
“…”
In full view of everyone, the man dropped a drop of mercury on the aluminum plate. A terrible phenomenon occurred.
But I saw that the aluminum plate suddenly began to boil and corrode, and small bubbles kept popping up.
After a while, fibrous bodies the size of beans suddenly grew on the part of the aluminum plate where the mercury was. Then, the fibrous body began to grow and climb higher.
In just ten seconds, a fibrous body as thick as a thigh and more than half a meter high appeared on the aluminum plate. It's simply a supernatural phenomenon.
"I don't know how to classify this experiment, and I can't explain why at the moment. It's just a drop of mercury, but a fibrous body as thick as a thigh grew out of thin air... When I came here to compete, I also wanted to Please answer this question. If possible, I hope Master Li can give me some answers."
After saying this, everyone looked at Li Zhen.
Ge Qingping was also full of doubts. He felt that this should be a chemical phenomenon. But there is no such weird thing in chemistry. Aluminum plates behave like this when they come into contact with mercury? What is the principle
A drop of mercury actually made the entire aluminum plate larger in size. A fiber tree over half a meter tall grew out of nowhere. And when he put the aluminum plate on the scale, the weight actually increased.
The weight actually increases for no reason? This phenomenon makes no sense. That drop of mercury seemed to summon a giant beast in the air...
Everyone was in an uproar and looked at Li Zhen, wondering if Li Zhen could give an explanation.
Li Zhen smiled and stood up: "This phenomenon should actually be placed in the chemical category. It makes sense to say it is physics. Let me ask this gentleman first, what kind of phenomenon do you think it is?"
The man hesitated for a moment and bravely said: "It should be a chemical reaction between the mercury and the aluminum plate. I named it the brush reaction."
Li Zhen shook his head: "Wrong, to be precise, there is no reaction between mercury and aluminum plates. There is no reaction between mercury and aluminum plates."
There was an uproar in the field, but no reaction? Why does a non-generated reaction grow such a giant thing for no reason? It's like a tall building rising from the ground.
"To know the principle, you must first understand the characteristics of mercury and aluminum plates. Among them, aluminum will dissolve in mercury, just like salt dissolves in water. Aluminum is a very strange metal. Aluminum will be oxidized, and aluminum After being oxidized, this phenomenon of hair growth and volume expansion will appear. To put it bluntly, as long as aluminum comes into contact with air, the brush reaction you mentioned will occur. "
"That's not right, Master Li, then we used so much aluminum. Aluminum is exposed to the air like this, and we don't see this happening to aluminum."
"Because there is an oxide film on the surface of aluminum. This oxide film can protect the inside of the aluminum and prevent it from contacting the air and oxidizing. However, mercury directly destroys this oxide film, causing a drop of mercury to drop on the aluminum plate. The point is oxidized. That point is aluminum, and after being oxidized, it forms aluminum oxide. The aluminum oxide does not dissolve with mercury, so it floats to the surface, forming the kind of brush-like fibers. As aluminum oxide continues to emerge, more oxide films will be broken, more aluminum will be oxidized, and aluminum oxide will continue to form."
"Aluminum trioxide can be called mercury-aluminum alloy, and this fiber is mercury-aluminum alloy. It can also be called amalgam. It looks like a tall building rising from the ground on an aluminum plate, and it also looks like hair. The same. This is the phenomenon of the brush reaction you are talking about... Strictly speaking, this is actually the phenomenon of mercury corroding aluminum. A piece of aluminum weighing several kilograms only needs to be contaminated with a drop of mercury, that is, mercury. In just a short time Within ten seconds, this drop of mercury will corrode and destroy the entire several kilograms of aluminum, forming an amalgam."
After finishing speaking, Li Zhen sat back again.
Everyone was stunned, especially the person who demonstrated this phenomenon, whose eyes were full of admiration.
"Master Li is indeed knowledgeable about the past and present. I really admire you."
"Wow wow wow" applause sounded continuously. Everyone finally saw Li Zhen's knowledge.
This is the first time I have truly seen Li Zhen's knowledge. Before, I had only heard legends and rumors. This time I finally understood why he was qualified to serve as the master of the three departments of the Kyushu Academy of Sciences. Why can one person teach the entire Kyushu Academy of Sciences
Li Zhen pressed his hand and said with a smile: "Don't waste time. Let the students from the Institute of Electromagnetics come up next. They have newer discoveries."
After Li Zhen finished speaking, Fang Hanxian, the director of the Institute of Electromagnetic Research, walked up to the stage and smiled: "The scientific research results of our team are the idea of alternating current."
"AC?"
People ask, what is alternating current
"In today's world, DC power is the main power. You may not know the difference between the two types of power. To put it bluntly, DC power is the power of dry batteries. And AC power is 220V power. AC power is alternating current, and its size and direction vary. Time makes a current that changes periodically. Direct current is the opposite. Our alternating current theory can theoretically lay the national grid, transmit more power, and have greater voltage... "
Fang Hanxian talked eloquently on the podium about the benefits of alternating current and the future development of alternating current. As well as the theoretical assumptions and principles of alternating current, one by one.
Li Zhen sat on the judges' bench, his face full of pride. My heart is full of expectations.
Once alternating current is fully rolled out, the era of industrialization in Kyushu planned by him will completely kick off.
Everything now is just paving the way for the future industrial age.
Obviously, the School of Electromagnetics does not only have the achievement of alternating current.
After Fang Hanxian stepped down, the vice president of the Electromagnetic Research Institute also came on stage and presented the second result.
Synchronous motor.
When the deputy director connected a metal device as big as a fist to a battery, a miracle happened.
With a 'buzz' sound, the metal equipment started spinning.
Everyone stood up in surprise: "How can this spin?"
"When you turn on the electricity, it actually spins?"
"If the power were greater, wouldn't it be a greater invention than the steam engine?"
"Using dry batteries, it can actually rotate?"
“…”
The vice president's face was full of pride: "This is the second achievement of our Electromagnetic Research Institute, the synchronous motor. This is another application of direct current. We can call it electric power. In fact, in our In the research of the institute, we are currently studying AC asynchronous motors. This requires the use of alternating current. Obviously, the power of DC motors is too small. According to theoretical assumptions, using a higher-power AC motor, its electric power will be perfectly exerted. "
“…”
(End of chapter)