Claircase.

There was some surprise in everyone's hearts.

The guests kept watching with a monocular clairvoyant, and sure enough, they found that the scenery in the distance was much closer.

"It's amazing."

"It's amazing."

"In this physics, it's just a miracle."

"I didn't expect Jin Shiteng, a person from the white-robed country, to have such academic attainments."

“……”

Jin Shiteng is happy to others to use his clairvoyant mirror, and constantly tries to explain the principle, and he has done many experiments in order to explain the principle clearly. I wrote a paper for a long, long time, just for today.

There is no such thing as secrecy. When you come to this podium, there is no hiding anything.

After Jin Shiteng was gone, it was his turn to be next, this person was also a citizen scientist, and what he discovered was actually a chemical phenomenon to be precise.

"I haven't found the rationale for this discovery so far, sorry, I can't really explain why."

Everyone was a little curious.

But the man placed an aluminum plate on the table, and then sucked out a drop of mercury from a glass bottle.

"Mercury?"

"What is this for?"

"Does mercury have to come into contact with this aluminum plate?"

“……”

In full view of everyone, the man dropped a drop of mercury onto the aluminum plate. A terrible phenomenon has emerged.

But I saw that on the aluminum plate, it suddenly began to boil and corrode, and that kind of small bubbles kept popping up.

A moment later, the part of the aluminum plate with mercury on it suddenly grew a bean-sized fibrous body. Then, the fiber began to grow and climb higher.

In just a dozen seconds, the fiber body with a thigh thickness and a height of more than half a meter appeared on the aluminum plate so quickly. It's simply a supernatural phenomenon.

"I don't know how to classify this experiment, and I can't explain why it's here. Obviously, it was just a drop of mercury, but out of thin thigh-sized fibers grew out of thin air...... When I came here to compete, I actually wanted to solve this question. If I can, I hope Li Shi can give me some answers. ”

After these words fell, everyone looked at Li Zhen.

Ge Qingping was also full of doubts, he felt in his heart that this should be a chemical phenomenon. But there is no such strange thing in chemistry, aluminum plate, and mercury contact can have this kind of behavior? What is the principle?

A drop of mercury actually made the volume of the entire aluminum plate larger. For no apparent reason, fiber trees grow more than half a meter tall. And when he put the aluminum plate on the scale, the weight actually increased.

For no reason, the weight will increase? This phenomenon does not make sense. That drop of mercury was like summoning a giant beast in the air......

Everyone was a little in an uproar and looked at Li Zhen, not knowing if Li Zhen could give an explanation.

Li Zhen smiled and stood up: "This phenomenon should actually be placed in the category of chemistry, and it makes sense to say that it is physics." Let me start by asking this gentleman, what do you think it is? ”

The man hesitated for a moment, then boldly said, "It should be a chemical reaction between mercury and aluminum plates, and I named it the brush reaction myself." ”

Li Zhen shook his head: "Wrong, to be precise, in fact, mercury and aluminum plates have not reacted in any way." Gong and aluminum plates do not generate reactions. ”

There was an uproar in the field, and no reaction was generated? Why does such a huge thing grow for no reason without a reaction? It's like a tall building rising from the ground.

"To understand how this works, we first need to understand the properties of mercury and aluminum. Aluminium dissolves in mercury in the same way that salt dissolves in water. The metal of aluminum is very peculiar, aluminum will be oxidized, and after aluminum is oxidized, there will be this phenomenon of long hairs and volume expansion. To put it bluntly, as soon as the aluminum comes into contact with the air, there will be this brush reaction that you are talking about. ”

"No, Master Li, then we used so much aluminum. Aluminum is exposed to the air in this way, and there is no such thing as aluminum. ”

"Because there is an oxide film on the surface of the aluminum. This oxide film protects the inside of the aluminium from coming into contact with the air and thus oxidizing. However, the mercury directly destroys this oxide film, so that a drop of mercury is oxidized at a point on the aluminum plate. The aluminium oxide at that point is oxidized to form aluminium oxide, which does not dissolve with mercury, so it surfaces to form a brush-like fiber. As aluminum oxide continues to emerge, more oxide films will be broken, more aluminum will be oxidized, and aluminum oxide will continue to be formed. ”

"And aluminum oxide, which can be called amalgam aluminum alloy, is this fiber is amalgam aluminum alloy. It can also be called amalgam. It looks like a tall building on an aluminum plate rises from the ground, and it looks like it has grown hair. This is what you call the phenomenon of the brush reaction...... Strictly speaking, this is actually a phenomenon in which mercury corrodes aluminum. A piece of aluminium weighing several kilograms only needs to be contaminated with a drop of mercury, which is mercury. In just a dozen seconds, this drop of mercury will corrode and destroy the entire kilogram of aluminum, forming an amalgam. ”

After finishing speaking, Li Zhen sat back again.

Everyone was stunned, especially the person who demonstrated this phenomenon, and his eyes were full of admiration.

"Master Li is really knowledgeable, I really admire you."

"Whoa" applause continued to sound. Everyone can be regarded as having seen Li Zhen's knowledge.

It was the first time I really saw Li Zhen's knowledge so much, and I used to listen to legends and rumors. This time, I understood why he was qualified to serve as the teacher of the Kyushu Academy of Sciences, the three departments. How can one person teach the entire Kyushu Academy of Sciences.

Li Zhen pressed his hand and said with a smile: "Don't waste time." Next, let the students of the Institute of Electromagnetic Research come up, they have updated discoveries. ”

After Li Zhen finished speaking, Fang Hanxian, the president of the Institute of Electromagnetism, stepped onto the stage and smiled: "The scientific research results of our team are the idea of alternating current. ”

"Alternating current?"

Everyone asks, what is alternating current?

"In today's world, direct current is the main common purpose. You may not know the difference between the two types of electricity, to put it bluntly, direct current is the electricity of dry batteries. Whereas, alternating current, is 220V electricity. Alternating current is an alternating current, an electric current that changes periodically in magnitude and direction over time. Direct current is the opposite. Our alternating current theory, theoretically can lay the national grid, more power transmission, greater voltage ......"

Fang Hanxian talked eloquently on the podium, discussing the benefits of alternating current and the development of alternating current in the future. and 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 anticipation.

Once the alternating current is fully rolled out, the era of industrialization in Kyushu, which he planned, will be completely opened.

Everything now is just paving the way for the industrial age to come.

Obviously, the School of Electromagnetism is not just about alternating current.

After Fang Hanxian stepped down, the vice president of the Institute of Electromagnetic Research also came to the stage and came up with a second achievement.

Synchronous motors.

When the vice president connected a metal device the size of a fist to the battery, a miracle occurred.

With a 'buzz', the metal device spun.

Everyone stood up in surprise and said, "This, how can this spin?" ”

"When you power it up, it's spinning?"

"If this power were a little greater, wouldn't this be a greater invention than the steam engine?"

"With a dry battery, it's able to spin?"

“……”

The vice president had a proud expression on his face: "This is the second achievement of our electromagnetic research institute, synchronous motor. This is another application of direct current, which we can call electrodynamics. In fact, in our institute's research, AC asynchronous motors are now being studied. This requires the use of alternating current. Obviously, the DC motor is too powerful. According to the theoretical assumption, the use of higher power AC motor, its electric power will be perfectly exerted. ”

“……”