Chapter 73 Mental arithmetic, what’s written on the blackboard

Style: Science Author: My name is MasterWords: 2161Update Time: 24/01/12 12:25:30
Su Zhe's sudden raise of his hand attracted the attention of everyone in the audience, and everyone who was whispering fell silent instantly.

Mao Zhenguo, who was sitting next to Su Zhe, looked surprised. He looked at Senior Brother Sanduo sitting next to him and found that Senior Brother Sanduo had a calm face.

He looked at the people in the lecture hall again. Everyone looked at them in surprise, or to be precise, they looked at Su Zhe who raised his hand.

In the entire lecture hall, there were a lot of masters and doctoral students, but Su Zhe was the only one who raised his hand.

Maybe...probably...

Su Zhe wants to show off!

Thinking about it, he looked at Professor Changsheng on the stage and saw Professor Changsheng looking at Su Zhe curiously.

"This classmate! Can you come up and write the calculation results on the blackboard?" Ning Changsheng asked with a smile on his face.

He just asked on a whim, but he didn't expect that someone actually raised his hand, and the person who raised his hand was so young.

This man sat with Huang Weicai's students Qian Sanduo and Mao Zhenguo, but they looked unfamiliar.

Could it be that he is Huang Weicai's new student?

While he was thinking this, the student who raised his hand stood up.

"Hello, Professor Ning! My name is Su Zhe, and I am willing to give it a try." Su Zhe said with a smile.

"Okay! Hello, classmate Su Zhe!" Ning Changsheng said encouragingly, "I'm looking forward to your performance."

Su Zhe smiled and nodded, passed Mao Zhenguo to the podium, and took the chalk handed over by Professor Ning.

"Classmate Su Zhe! You write according to your ideas. Don't worry too much. It doesn't matter if you are wrong." Ning Changsheng warned.

In his opinion, whether he knows it or not, being able to stand on the podium is a sign of courage.

"Thank you, Professor Ning!" After Su Zhe said this, he began to write on the blackboard. He ignored the calculation process and wrote the calculation results directly on the blackboard.

Ning Changsheng looked at the calculation results written by Su Zhe on the blackboard and was a little surprised, "Did you calculate this result mentally?"

"Yes!" Su Zhe nodded.

"Then do you think the lightsaber in the movie can be realized in reality? Is the plan I proposed feasible?" Ning Changsheng asked Su Zhe with great interest.

"Professor Ning's plan is theoretically feasible, but in order to realize the lightsaber in the movie, we must first have sufficiently pure monochromatic light, and then there is the problem of the battery." Su Zhe answered calmly.

"Um! You are so sure." Ning Changsheng was curious whether what Su Zhe said was staged or true. He asked tentatively, "If the main body of the lightsaber uses two specific wavelengths of light, I will use red light with a wavelength of 700 nanometers for the periphery. , what is the wavelength of the light used in the core part?”

"Still using red light with a wavelength of 700 nanometers, but there is a difference in time between the two beams of light." Su Zhe said while writing a long formula on the blackboard and the relevant parameters.

"Not bad... What do you think of me controlling the length of the lightsaber like this?" Ning Changsheng nodded with satisfaction, took the chalk again, and wrote the relevant formulas and parameters on the blackboard.

"It's feasible! But you have to consider the energy consumption of the lightsaber length..." Su Zhe glanced at the formulas and parameters written by Professor Ning, and then wrote new formulas and parameters on the blackboard.

"Okay! The idea you came up with is really good. It can reduce energy consumption and also..."



On the podium, Su Zhe and Ning Changsheng had forgotten the existence of others. While communicating, they wrote formulas and calculation results on the blackboard.

There are no calculation procedures or explanatory text.

The more than 500 people in the audience looked at the two people on the podium in confusion!

The lecture that was promised...how did it end up like this?

More than 500 people are in a hurry!

The blackboard is filled with formulas and parameters that I can’t understand!

As more and more formulas and parameters were written on the blackboard, everyone woke up from the initial shock and began to whisper quietly.

"Brother! You are a doctor, tell me what is written on the blackboard? Is it possible to actually build the lightsaber in the movie?"

"This...that...didn't you listen to what Professor Changsheng said! In theory, it's possible, but making a lightsaber requires femtometer-level lenses. Do you think it's possible?"

"It's difficult...Senior brother! What's written on the blackboard? Tell me...Senior brother! Why are you ignoring people..."



"It's so confusing! It's so confusing. I only write formulas and calculation results. This is for people to see... Why do I feel like my IQ is being crushed."

"Professor Ning and this classmate are so amazing. You need to have incredible computing power to do this. They are so powerful."

"Everyone knows that Professor Changsheng is a genius, but this classmate can compete with Professor Changsheng. His ability is incredible. I am so envious!"



"That's not right! Except for Ning Qiaoqiao, the daughter of Professor Changsheng, when did our University of Science and Technology have such a monster student? Could it be from another school? That's not right! How could such an outstanding person remain unknown!"

"This classmate's name seems to be Su Zhe... Su Zhe! Su Zhe! I remembered that this Su Zhe was the science champion in Hanxi Province this year. I have seen his short video."

"This...How come Su Zhe is so powerful? He just graduated from high school! He is as powerful as Professor Changsheng...Well, why did Su Zhe show up in our school? Curious!"



"Sanduo...Senior brother Sanduo! Is this Su Zhe really just graduated from high school? He's fake!" Mao Zhenguo trembled a little when he spoke.

He couldn't believe what he was seeing.

At first, he felt that Su Zhe just wanted to express himself, but now...

What is written on the blackboard!

After reading it for a long time, he understood part of the formula and knew what the formula represented.

However, Su Zhe had a back-and-forth discussion with Professor Changsheng.

He remembered what he had said to Su Zhe before, and his face turned red unconsciously.

"What? You're blushing!" Qian Sanduo teased, "Now that I know how powerful Su Zhe is, think about it carefully, is the person who can win four Olympiad championships an ordinary person?"

He knew that Su Zhe had developed the DYN-ion beam polishing technology and provided the key parameters of the plasma EUV light source, but he was still a little shocked when he saw the back-and-forth exchange between Su Zhe and Professor Changsheng on the podium.

Especially Su Zhe's powerful computing power.

"Yes! Yes! I underestimated Su Zhe." Mao Zhenguo looked like I was wrong, "Brother Sanduo! How much can you understand the formulas and parameters written on the blackboard? The lightsaber that Professor Changsheng proposed relies on Is it right?"

"It would be nice if there was a calculation process to understand the part." Qian Sanduo sighed, "As for whether the lightsaber is reliable, I feel it is quite reliable, but it needs monochromatic light with higher purity. The current monochromatic light must be Improving the light purity by three orders of magnitude, isn’t this exactly the direction of your research?”

"Improving the purity of monochromatic light is difficult! It requires ultra-high-precision lenses. Today's picometer-level optical lenses are no good!" Mao Zhenguo said helplessly, "Professor Changsheng said that we need to build a lightsaber and optical lenses. The accuracy needs to reach femtometer level, is this possible?”

"Maybe! Su Zhe and the others..." Qian Sanduo almost said it.

"What's wrong with Su Zhe and the others?" Mao Zhenguo asked curiously.

"Nothing!" Qian Sanduo took out his mobile phone, "It's getting late. When will Professor Changsheng and Su Zhe do it?"

"have no idea!"