African Nationhood

Chapter 247 Tesla’s Open Class

As a middle school student, the slightly fat Sun Ying rushes every morning.

Because her family lives in the family area of ​​Nanhua Medical College, she has to go out from Erdao Dam every day to go to school, which is nearly half an hour's drive from Anhai Town.

She is relatively good enough to be a day student, but those students who live in other major areas must live on campus.

Some students whose homes are relatively remote can only live on campus for a long time and can only return home once a month.

Because the distance was too far, she had to get up twenty minutes earlier than her classmates every day to catch the company's scheduled carriage.

After coming out of the Medical College Family Hospital, she said hello to the guard uncle on the dam side, then quickly crossed the dam and came to the public carriage stop on the dam side to wait for the public carriage to arrive.

Sun Ying's family moved from Brazil. She didn't go to school in Brazil. Her parents were both plantation workers. She was still young at the time and could only follow her parents as a follower.

Since coming to Southwest Africa, her parents have been sent to medical schools as caregivers, and she has been admitted to a junior primary school.

Although Nanhua Company has liberalized the sale of bicycles, the price of up to 1500 yuan in military coupons per bicycle still prohibits many families.

She has younger siblings at home, and her parents want to save money to buy land after working for a few years, and then make a living by farming.

Working every day is far less relaxing than farming.

Because of her serious study, Sun Ying was able to continue studying in a secondary school.

The physics subject she chose will allow her to study in Europe in the future.

Today's school curriculum is a bit special, because the school has arranged an open class.

The teacher who gave the lecture was said to be a genius inventor that even Mr. Shi admired, and he was also a leader in the field of electricity.

Sun Ying has already learned some preliminary knowledge of electricity in the physics course, and she is very interested in things like electromagnetic induction.

……

The sound of "ding-dong-dang-dang" copper bells spread far and wide, and finally it came.

As the sound of the bells became clearer and clearer, so did the outline of the stagecoach.

Sun Ying waved to the handlebar in the front of the carriage, and the other party nodded and smiled at her.

This handlebar uncle was a soldier who injured his foot in a battle with the indigenous people, so the company arranged for him to drive a public carriage.

The public carriage is a rectangular carriage with a total of twenty seats inside, and it is always full every time.

The passengers on the bus are regular passengers, and everyone is basically familiar with them, so they will take the initiative to say hello when they meet.

This handlebar uncle is called Huang Zhan. He usually doesn't like to smile much, but today he has a smile on his face, which surprises Sun Ying.

Because it's still early, Uncle Huang Zhan will wait for a few minutes at the stop before the train leaves.

Sun Ying was not in a hurry. She waited for the carriage to stop before carefully boarding the carriage.

You can get a monthly pass for this public carriage. You just need to pay the monthly pass at the carriage station at the beginning of each month. Sun Ying is a person who rides the carriage all year round, so there is no need to show the ticket.

After Sun Ying sat down, Huang Zhan said with a smile: "The weather is good today."

Sun Ying smiled and nodded, "Yes, Uncle Huang, you are in a good mood today too."

Huang Zhan took out a red egg and a few peanuts from his pocket and handed them to Sun Ying.

"Yesterday your aunt gave birth to a girl. I was so happy that I didn't sleep all night. I feel like everything is good this time at work, haha."

After listening to Uncle Huang Zhan's words, Sun Ying hurriedly stood up and took the eggs and peanuts. She smiled and congratulated Uncle Huang Zhan: "Congratulations, Uncle Huang, you got what you wanted."

Huang Zhan laughed and nodded, "Ever since your aunt gave birth to twin boys for the first time, I have wanted a daughter. Who knew that the second child would still be a boy? This is not the end of giving birth to a daughter. It is not easy."

"What's not easy, Lao Huang?"

Huang Zhan turned to look at the person who asked the question, and the smile on his face became stronger. He was a doctor from the Women's and Children's Hospital.

"Hey, Doctor Zhao, thanks to the skill of the doctors in your hospital, my wife had a difficult delivery yesterday. It took four or five hours. In the end, mother and daughter were safe. I have to thank you."

After saying that, Huang Zhan continued to take out eggs and peanuts from his pocket.

Dr. Zhao chuckled and took the eggs and peanuts, but said: "It's nothing, this is all my own business."

Sun Ying quickly said hello to Dr. Zhao: "Hello, Uncle Zhao."

Dr. Zhao also nodded, "Hello, Xiaoying."

Then the two adults started chatting about yesterday's events. Sun Ying heard a few words and found them boring, so she began to recite silently what she had learned from the textbook before.

The two adults didn't chat for a while before Huang Zhan took out his pocket watch, looked at it, and said with a smile: "It's time, we should go."

After saying that, he shook a big bell again and shouted: "The train is leaving. If there is anyone else who wants to ride, please hurry up."

When Huang Zhan saw no one responded, he jerked the reins and the carriage started moving.

Because this road connects Erdaoba and Anhai Town, the Anhai Town Management Committee specially reinforced and renovated this road. This road is very smooth and paved with stone slabs, so there is basically no bumps during driving.

There are five stops along the route, and people will get on the bus at each stop.

As more people got on the bus, the public carriage became lively.

The content of everyone's chat is different. Usually at this time, Sun Ying will recite the textbook content silently alone.

……

The carriage drove to the railway track, indicating that they had entered Anhai Town and would arrive at the station in a few minutes.

Sun Ying began to pack her schoolbag. She had put the eggs and peanuts given by her uncle Huang Zhan into her schoolbag, and she would give them to her younger siblings when she got home in the evening.

With Uncle Huang Zhan's elongated "Oh~~~~"

The carriage stopped and everyone got out of the car. Sun Ying was the last one. After saying goodbye to Uncle Huang Zhan, she also got off the car.

……

Leave the public carriage station, follow the avenue along the Swakop River, and walk in the direction of the sea for five minutes to reach the secondary school.

The road is wet in the early morning, which is evidence that sanitation workers have cleaned the road. Walking on clean and comfortable roads will also make people feel happy.

Sun Ying couldn't help humming a tune she had just learned to the rising sun, "The sun is shining in the sky, and the birds are smiling at me..."

Soon she arrived at the school gate. Sun Ying reached for her student ID card from the side pocket of her schoolbag and showed it to the guard. After the guard confirmed it, she would be allowed to enter the school.

Entering the classroom, Sun Yingcai found that the classroom was full of people. It seemed that everyone was here to listen to the open class.

Sun Ying found that many people who were not in the physics class also came.

Everyone must have heard that this lecturer is a person that Mr. Shi admires, so everyone is curious and wants to see what this person that Mr. Shi admires looks like.

The waiting time was short. As the bell rang, the plump and slightly short Teacher Wei walked into the classroom accompanied by a tall and thin young man.

Everyone is used to seeing Teacher Wei, there is nothing unusual about him.

On the contrary, it was the man who came with her that attracted everyone's attention.

His clothes are neat and tidy, and his hair is meticulously combed. It can be seen that this teacher pays great attention to personal appearance.

Teacher Wei smiled and said to everyone: "This is Teacher Nikola Tesla who came from Europe. Everyone is welcome!"

The students applauded one after another. Tesla was a little embarrassed. He waved his hand, then gave up and allowed the students to applaud.

When the applause stopped, he nodded to Teacher Wei, then turned around and wrote the title of this open class on the blackboard: "The Difference, Advantages and Disadvantages of Direct Current and Alternating Current".

In today's open class, Teacher Wei will act as a translator. Whether it is his writing or speech, he can translate it.

After Tesla finished writing, Teacher Wei translated it directly.

After finishing writing, Tesla tried to clear his throat, and then slowly said: "Before I start today's lecture, I would like to ask the students, what is electricity?
  Sun Ying had studied physics, so she and other students raised their hands to answer the teacher's questions.

Teacher Tesla randomly selected a male student, who replied: "Electricity is a natural phenomenon. It exists in nature and can often be seen during thunderstorms."

Tester nodded, then nodded to another student and replied. This student replied: "Electricity and magnetism are the same. They can influence each other and transform into each other."

Tesla continued to nod, and then he smiled and said: "This classmate must have studied physics courses, and he is right.

The previous classmate was right, electricity is a natural phenomenon, but your definition of electricity is not complete.

In my opinion, calling is a kind of power, a super strong power, just like the lightning we see on thunderstorm days, short and violent!
  They are very mysterious but not mysterious. We only need to study patiently to grasp the mystery of electricity. After research by many smart people in the scientific community, we finally have some clear understanding and classification of electricity.

It is the direct current and alternating current we are going to talk about today. So what is direct current and what is alternating current? "

……

The content of Tesla's speech is a bit difficult for most students, but for students like Sun Ying who study hard and have a strong interest in physics, it is just right.

It not only gives them a general understanding of new knowledge, but also stimulates their desire for new knowledge.

Overall, this open class was a success. After all, Tesla spent most of his time in Southwest Africa in the laboratory.

This open class was just a chance for him to get some fresh air, and it was also a road show before he went to Europe to give lectures.

The British Royal Academy invited him to give a lecture on alternating current. He planned to use part of this open class to give a lecture at the Royal Academy.

He asked Boss Shi to help him review his speech. Boss Shi directly encouraged him to come to the middle school to hold open classes.

This open class made him feel very good, and he became more confident about giving lectures in Europe.

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  (End of this chapter)