When it comes to the safe output of electric energy, she thinks of the wires and cables of later generations, and the materials that conduct electric energy.

Taking a deep breath, Fang said, "It needs a sufficient amount of silver, copper, aluminum, and other substances. ”

"And in order to avoid casualties caused by electrical energy leakage, a layer of scarring is needed on the outer layer of these substances."

After a slight pause, she added: "I remember that these contents are all in the basic knowledge of physics, you go down and study them carefully." ”

"In addition, if we want to control the power artificially, we have to install a switch in the right place."

"As soon as the switch is turned on, the power is available smoothly, and when it is turned off, it stops."

Xu Yan gave a rough explanation of many precautions for the use of electricity in later generations to the people present.

Then he said, "As long as you learn the basics of physics by heart, you should be able to solve these problems." ”

Speaking of this, everyone present lowered their heads in shame: "It's the students' fault, they don't learn the basic knowledge well, so they came to contact such advanced knowledge." ”

"The students knew they were wrong."

Several students bowed their heads in shame, their faces full of uneasiness, "I want to make a big mistake, please punish Your Majesty and Her Royal Highness." ”

In the face of their attitude of admitting their mistakes, Xu Yan was both relieved and a little frightened.

It is gratifying that after realizing their recklessness, they promptly excuse themselves and find the reason from themselves, instead of shirking responsibility.

What is fearful is that they will lose their spirit of exploration from now on, which will slow down the progress of scientific research.

So she hurriedly said: "Research is about finding the right direction through trial and error. ”

"Of course, in the process, it is necessary to avoid some losses."

"But we can't stop because there is danger, scientific researchers are the leaders who are at the forefront of the times."

"Don't choke on food and hold back."

"Please rest assured that Your Majesty and Your Highness the Empress Dowager will lay a solid foundation with their hearts in the future, and they will never make today's mistakes again."

Her Royal Highness's words moved and excited the hearts of several students, "and they will not lose the courage to explore the unknown." ”

"Good."

Xu Yan bowed her head in satisfaction, "Here I have taken out the charcoal that generates power inside, and your next task is to improve it." ”

"There's no need to rush to anything else until the improvement is successful."

"Yui."

Several students bowed their hands, "I respectfully follow the words of Her Royal Highness." ”

Ying Zheng: "When you do this thing thoroughly, I will personally wait for you to be knighted." ”

Seeing that his nine daughters spoke so carefully to these people, and with a little respect, Ying Zheng knew how important this thing was to Daqin.

Therefore, the tone is also a little softer.

"That's all for today, you can go back to study first."

"Congratulations to Your Majesty, to Her Royal Highness the Princess, to Her Royal Highness Yangzi......"

In the congratulations of several people, Xu Yan took the hand of the little sister and walked out of the laboratory with her father.

I saw that Zhen Yan had left the place where she had been meditating at some point, and was writing something quickly in one of the offices.

She made a silent gesture with her father and little sister, and cautiously approached the office that had not closed the door.

I saw Zhen Yan's hands writing very quickly what she had just thought of in her thoughts.

The rustle caused by the friction between the tip of the pen and the paper made Xu Yan worry that sparks would emerge.

But Zhen Yan didn't notice the arrival of her father and two younger sisters at all.

She only worries that her hand speed can't keep up with the turn of her mind, and she will miss out on important information.

I saw that one formula after another was completed, and the pieces of paper full of content were opened by her and put aside.

Seeing this, she gestured to her father and little sister, gently closed the office door for her, and then walked away a little before saying, "It seems that the eighth sister has figured it out." ”