Start with a college teacher

Chapter 749 Powerful (3)

The exhibition is about to start and will last for half a month.

Therefore, Professor Shen Guanglin had to prepare 15 lectures, one every day.

In the past, so many lectures could bring him a profit of 150 million US dollars, but is Professor Shen a person who likes money?
He is not!
He is just for the better dissemination of knowledge.

He is willing to make selfless sacrifices for the Swedish people.

Of course, this is only the first day of the exhibition. People in other parts of Europe don't know what Shen Guanglin is going to do. The speed of news spread is not so fast in this era.

Unless, Shen Guanglin releases some new technological knowledge points.

Is it hard? It's hard.

Before the opening, Shen Guanglin arrived at the home appliances exhibition area half an hour earlier, and he sat there, looking up at the ceiling, silently preparing for his first speech.

This is not just a lecture, it is to be combined with the product.

As an opening, it is actually very difficult. It is not so easy to have something simple and easy to understand, but also to have technological innovation.

The products that Shen Guanglin plans to combine theory with practice are induction cooker and microwave oven.

The principle of induction cooker is the phenomenon of electromagnetic induction.That is, the alternating current is used to pass through the coil to generate an alternating magnetic field whose direction is constantly changing, and an eddy current will appear inside the conductor in the alternating magnetic field.

The eddy current phenomenon of the induction cooker was discovered by the French physicist Foucault. It is caused by a moving magnetic field intersecting the metal conductor, or by the perpendicular intersection of the moving metal conductor and the magnetic field. Electric current, therefore, the food in the pot is heated like this.

The microwave oven is another principle, which is a modern cooking stove that uses microwaves to heat food.Microwaves are electromagnetic waves, so metal cannot be placed in a microwave oven.

Ashamed to say, the induction cooker was invented as early as 1850, and the microwave oven was invented in 1947, neither of which is new.

However, the microwave ovens launched by the Great Wall Group are still both beautiful and practical, and the technology content is so high that most people may find it amazing after seeing it.

Shen Guanglin's lecture was carefully prepared. The previous theoretical knowledge was just an appetizer. He also prepared a new theory, which was used to shock the world.

If there is no theoretical breakthrough that can be put forward, can his lectures by Shen Guanglin still catch people?

Moreover, Shen Guanglin's theory and practice are also very good. This thing is also very common in later generations, that is, the ultrasonic cleaning machine.

On Taobao, an ultrasonic cleaning machine that can clean glasses and jewelry necklaces costs only a dozen yuan, while a large industrial ultrasonic cleaning machine costs hundreds of thousands.

However, in this era, no one has discovered the principle of ultrasonic cleaning.

Originally, in real history, this technology was invented by Fusang people.

It was Yoshihide Shibano from Fuso who discovered the basic theory of the ultrasonic cleaner. In his discovery, those bubbles in the water are just simple gas explosions caused by the strong coarse and dense waves of the ultrasonic wave, which will inhibit or even eliminate the ultrasonic cleaner. Cleaning power, the real cleaning effect is the vacuum air pocket, so this theory is also called "Shibano theory"

What Shen Guanglin wants to exhibit at this exhibition is ultrasonic applied products, both industrial and household, which is also a place to show his awesomeness.

In fact, as early as the 70s, there were equipment using ultrasonic cleaning, but they still used various chemical reagents, and they didn't understand the working principle of ultrasonic at all, only knowing that it was easy to use.

That being the case, let someone Shen reveal this matter.

Thus began the lecture.

Shen Guanglin has held countless lectures and delivered countless speeches, but it was the first time that he stood upright like a Swede.

The organizing committee did not prepare stools, and it was said that they were going to watch. However, everyone stood at a certain distance like the army, neatly and well-behaved.

The Swedes are a very rigorous nation. They are as craftsmanlike as the Germans in doing things. They are generally well-educated and have few anti-intellectuals. This is better than Citigroup.

In Citigroup, there are always a group of very strange people who don’t believe that the earth is round, that vaccines are useful, or even that 1+10 is equal to 11, because calculations over 10 must use a calculator, Otherwise it is not understood.

Of course, every country has its points of ridicule.For example, even in China, there are quite a few people who pay the IQ tax for health maintenance programs, and "Eat back the sickness you ate" is still very popular.

Moreover, there are also quite a few people who believe that the barreled oil in the supermarket will never be as good as the soil-pressed oil processed in the country workshop. Even if the soil workshop is not hygienic, sterilization is not good, and the oil is adulterated, it is still good.

Today's lecture is very special, and we can't be willful at this time.

In the past, Shen Guanglin sometimes gave lectures in Chinese. If you don’t understand, then don’t listen.

This time he changed, using English, which is a second language in Sweden and is spoken by 98 percent of the population.

"Today I was here to introduce products, but since I'm here, I can't just introduce products."

After the beauty staff demonstrated how to use the induction cooker and microwave oven, Shen Guanglin began his speech topic: "My greatness makes me don't know how to express it."

Then, Shen Guanglin talked in detail how he discovered the true meaning of ultrasonic cleaning in an ordinary thought, and only then did he reveal the real secret of ultrasonic cleaning.

ah?Can it still be like this, watching an exhibition and releasing new scientific theoretical knowledge?

Sure enough, as soon as the dry goods came, the originally quiet Swedes immediately became less quiet.

"Professor Shen, is this true?"

Of course it is true!

Therefore, Shen Guanglin cleaned the vegetables and fruits with an ultrasonic cleaner, and then said that a healthy life is really inseparable from such a good thing with no additives and no pesticide residues.

You deserve a healthy life.

If Shen wants to establish a good image, he naturally has to do as the Romans do.

As for the identity of the hostess, Li Li can also use it very well.

Everyone looked at the girl who looked similar to Li Rong but was more beautiful, and they dared not say anything or ask anything.

Shen Guanglin was speaking on the stage, and Li Li was listening beside him, acting like a husband and wife.

Some reckless people thought she was Li Rong, and she said she was the teacher's wife, and she agreed, and asked, "Student, what major do you study?"

"I also major in physics." This classmate was a little afraid to look at the teacher's wife's face, she was so beautiful.

"Study physics, what have you learned recently?" Li Li also wanted to check the level of Shen Guanglin's students.

"Recently I'm reading Mr. Li's KLN theorem."

Mr. Li here is Mr. Li Zhengdao. As mentioned above, he is the second youngest person to win the Nobel Prize, and he won the award at the age of 30.

However, the classmate regretted it after saying these words, because most of the classmates knew that Mrs. Shi graduated from the National People's University of Political Science and Economics, and it would be impolite to talk to her about physics.

However, what he didn't expect was that the level of this "teacher's wife" was unexpected. She whispered: "In the process involving massless particles, the infrared divergence can be completely offset, right? This is a strong interaction experiment. Indispensable theorems in , and also the theoretical basis for the discovery of quarks and gluons with high-energy jets."

? ? ? ?
As expected of a teacher's wife, she can even understand this. Professor Shen is really amazing, and he teaches too well.

(End of this chapter)