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

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

In the past, so many lectures could bring him US$1.5 million in income, but is Professor Shen a person who likes money?

He is not!

He just wants to better spread 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 still don’t know what Shen Guanglin is going to do. News does not spread so fast in this era.

Unless Shen Guanglin releases any new technological knowledge points.

Is it difficult? Isn't it difficult?

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

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

As an opening, it is actually very difficult. It must be simple and easy to understand, but also technologically innovative, which is not easy.

The products Shen Guanglin prepared to combine theory with practice are induction cookers and microwave ovens.

The principle of the 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 with a constantly changing direction. An eddy current will appear inside the conductor in the alternating magnetic field.

The eddy current phenomenon in the induction cooker was discovered by the French physicist Foucault. It is caused by a moving magnetic field intersecting a metal conductor, or a moving metal conductor intersecting perpendicularly with the magnetic field. This action produces a magnetic field circulating in the conductor. Electric current, therefore, the food in the pot is heated.

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

It's embarrassing to say that the induction cooker was invented as early as 1850, and the microwave oven was invented in 1947. Neither of them is new.

However, microwave ovens like those launched by Great Wall Group are still both beautiful and practical, and have such high technological content that most people may find them magical after seeing them.

Shen Guanglin prepared his lecture very carefully. 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 achieved, can his lectures by Shen Guanglin still attract people?

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

On Taobao, an ultrasonic cleaning machine that can clean glasses, jewelry and necklaces only costs 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 the Fuso people.

It was Fuso native Yoshihide Shibano who discovered the basic theory of ultrasonic cleaners. In his discovery, those bubbles in the water are just simple gas explosions caused by the powerful coarse waves of ultrasonic waves. On the contrary, they will suppress or even eliminate the effects of ultrasonic cleaners. Cleaning power, it is the air pockets of the vacuum that really exert the cleaning effect. Therefore, this theory is also called the "Shibano Theory"

What Shen Guanglin will exhibit at this exhibition is ultrasonic application products, both industrial and household. This is also a place to show his awesomeness.

In fact, as early as the 1970s, there were equipment that used ultrasonic waves for cleaning, but they still used various chemical reagents and did not understand the working principle of ultrasonic waves at all. They only knew that it was easy to use.

In this case, let Shen reveal this matter.

This is how the lecture began.

Shen Guanglin has given countless lectures and given countless speeches, but this is the first time for him to stand upright like a Swede.

The organizing committee did not prepare stools. It was supposed that they were going to watch, but everyone stood at a certain distance like an army, neatly and orderly.

The Swedes are a very rigorous nation and have a craftsmanship spirit just like the Germans. Moreover, their education level is generally good and they have very few anti-intellectual people. This is better than Citizen.

In Citiland, there is always a group of strange people. They don’t believe that the earth is round, they don’t believe that vaccines are effective, and they don’t even believe that 1+10 is equal to 11, because for calculations exceeding 10, you must use a calculator. Otherwise, I don’t understand it.

Of course, every country has its points worthy of ridicule. For example, even in China, many people believe in health-preserving programs that pay IQ taxes, and the book "Eat Back the Disease You Eat" is still a best-seller.

Moreover, a large proportion of people believe that the barreled oil in supermarkets will never be as good as the soil-pressed oil processed in rural workshops. Even if the soil-pressed workshops are not hygienic, cannot sterilize, and the oil is adulterated, it is still good.

Today's lecture is very special, so 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 it and used English, which is the second language in Sweden and is spoken by 98% of the people.

"I was originally here to introduce the product today, but since I'm here, I can't just introduce the product."

After the beautiful staff demonstrated how to use the induction cooker and microwave oven, Shen Guanglin started his speech: "I don't know how to express my greatness."

Then, Shen Guanglin talked in detail about how he discovered the true meaning of ultrasonic cleaning through ordinary thinking, and then revealed the real secret of ultrasonic cleaning.

Ah? How else can it be like this, watching an exhibition and releasing new scientific theoretical knowledge?

Sure enough, as soon as the useful information arrived, the originally quiet Swedes immediately became less quiet.

"Professor Shen, is this true?"

Of course this is true!

So, Shen Guanglin used an ultrasonic cleaning machine to clean the fruits and vegetables, and then said that a healthy life for you and me is really inseparable from such a good product with no additives and no pesticide residues.

You deserve a healthy life.

If Mr. Shen wants to establish a good image, he must naturally follow the local customs.

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

Everyone looked at the woman who looked similar to Li Rong but was more beautiful, and they didn't dare to say anything or ask anything.

Shen Guanglin was speaking on the stage, and Li Li was listening next to him, acting like a married couple.

Some foolhardy people thought she was Li Rong, so when they spoke, it was the teacher's wife. She agreed, and even asked something serious: "Classmate, what major do you major in?"

"I'm also studying physics." This classmate didn't dare to look at the teacher's wife's face because she was so beautiful.

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

"I've been reading Mr. Li's KLN theorem recently."

The Mr. Li here is Mr. Li Zhengdao. As mentioned earlier, he is the second youngest person to win the Nobel Prize. He won the prize at the age of 30.

However, this classmate felt a little regretful after saying these words, because most of the classmates knew that the teacher's wife graduated from the National People's Congress in political economics, and it was impolite to teach her physics.

However, what he didn't expect was that this 'Master's Wife' was surprisingly capable. She whispered: "In the process involving massless particles, the infrared divergence can be completely offset, right? This is a strong interaction experiment. It is an indispensable theorem and the theoretical basis for the discovery of quarks and gluons using high-energy injection."

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Chapter completed!