I am a great scientist

Chapter 43 Money is not easy to earn

Zhou Xing stood in front of the comprehensive experiment platform, busy with his whole heart and soul. He sometimes wrote codes, sometimes debugged instruments, and sometimes modified data... with a clear mind and an orderly mind.

The four of them stood behind Zhou Xing, stopped talking, and watched him do the experiment quietly.

After more than ten minutes, Zhou Xing confidently pressed the power button. Once the power was turned on, the circuit board on the test bench operated normally, and the indicator light flickered steadily. The hardware design and software programming were perfectly combined. The experiment was a success.

Zhou Xing picked up the pen and notepad, faced the display screen, and began to record the experimental data and check the result data.

After recording the data, Zhou Xing shouted happily: "Uncle Liu, the experiment was successful, and we can proceed to the next item."

Zhou Xing turned his head to look for Liu Qiang, only to find that at some point, his father and two strangers were also standing behind him, looking at him with admiration.

"Xiaoxing, I'm not busy doing the next experiment. I'll introduce you to two professors. This is Professor Chen and this is Professor Wang. They were invited by your father to teach you other knowledge in the field of electronics. Don't you still have a lot? Question, now you can 'test' them." As if there were two more people who could throw off the burden, Liu Qiang smiled brightly, and happily introduced to Zhou Xing:

Zhou Xing's eyes lit up, looked at the two professors, introduced himself enthusiastically, and said, "Professor Chen, Professor Wang, hello! My name is Zhou Xing!"

Chen Jianbin glanced at Liu Qiang, looked at Zhou Xing and asked calmly: "Well, the experiment was done well, but what knowledge have you learned? The content I teach is not generally difficult. Have you read the book on optical engineering?"

"Well, Professor Chen, I have read a lot of books on optoelectronic engineering, photoelectric detection, image sensor information and communication, photonics, optical integration, optoelectronic devices, etc." Zhou Xing nodded seriously:

"That's right! Then I'll ask you a few questions to test your learning foundation." Chen Jianbin nodded and said with a smile:
"Okay, Professor Chen, you can ask!" Zhou Xing said without fear:
"A thin magnifying glass with a focal length and a clear aperture of 40 mm, the pupil of the observer's eye is 3 mm, the eye is located at 20 mm behind the magnifying glass, and the object is located at 35 mm in front of the magnifying glass. How do I ask for the size?" Chen Jianbin chuckled and asked in embarrassment:

"This problem is to test the knowledge of aperture technology. The result can be obtained through three steps. 1. Each optical aperture is imaged into the object space. 2. The light is drawn from five points to the edge of the aperture image to find the gap between the light and the optical axis. Angle, 3, the stop corresponding to the smallest included angle is the aperture stop. It is easy to find the result according to the definition of the entrance pupil and the exit pupil! Professor Chen, the result is..." Zhou Xing calmly met Chen Jianbin's gaze Say:

"Don't forget about the result, you're pretty good!" Seeing Zhou Xing explaining his solution to the problem in such detail, Chen Jianbin immediately looked at him differently, and interrupted aloud:

"Thank you, Professor, for your compliment. Then can I ask you a question?" Zhou Xing asked eagerly:

"Don't worry, Professor Chen finished the exam, I want to test you too! Have you read the book on communication engineering?" Wang Quan suddenly interjected and asked Zhou Xing:
"Well, I have. Professor Wang, just ask." Zhou Xing looked at Wang Quan, nodded and said:
"What are the secure communication protocols of the WLAN system, and what are their advantages and disadvantages?" Wang Quan nodded and asked tentatively:
"WEP has obvious security flaws. WPA uses TKIP protocol for encryption. This protocol provides a secret key reset mechanism and strengthens the effective length of the key. Through these aspects, it can make up for the inability of WEP protocol. WAPI uses bow-key cryptography technology..." Zhou Without even thinking about it, he replied directly:

"Well, the answer is very standard, but mere memorization is not enough! I'm asking you a question!" Wang Quan

"Okay, you can ask!" Why is it so annoying!Zhou Xing said helplessly:
"In a communication network with 8 channels, the traffic volume of each user in city M is 0.01Erl, and the service level B=0.1. If a dedicated call channel is used, how many users can the communication network accommodate?" Wang Quan intentionally made things difficult for Zhou Xing. I chose a more difficult calculation problem:
"B=0.1N=7,..., the number of users that this system can accommodate: mn462." Zhou Xing listed the formulas and stated the calculation results on the spot without any difficulty.

Chen Jianbin and Wang Quan looked at each other, and they saw a trace of shock in each other's eyes.

hell!At such a young age, Zhou Xing is still the top scorer in the college entrance examination. Did he start studying when he was still in the womb?
Just now I watched Zhou Xing independently complete the experiment of single-chip microcomputer development, so he should have a solid knowledge reserve in this area. However, the questions they asked him required a solid knowledge base in the two fields of optoelectronic engineering and communication engineering. It is possible to answer.

"Professor Chen, Professor Wang, how are you? Are you okay?" Zhou Wenhai looked at Chen Jianbin and Wang Quan, and asked happily:
"It's a bit unbelievable, but I can't find a reason to object!" Wang Quan smiled wryly:
"Yes! Yes, very good, maybe this is a genius!" Chen Jianbin looked at Zhou Xing enviously, and said with a sigh:
"Thank you, Professor Chen praised, can I ask you a few questions?" Is it time to ask questions?Zhou Xing thanked Chen Jianbin, and couldn't wait to say:

Since I want to collect money from others, I still have to do some work. I earn [-] yuan in two months, and I only need to teach one student. This job should not be too simple. Just ask!"

"Professor, it's a problem with the measuring instrument. To measure a diffraction angle, the width is...," Zhou Xing asked unceremoniously:

"Well, is this a question? Did you measure it from the angle between the diffracted light epipolar lines? If so, then..." Chen Jianbin pondered for a while, and answered Zhou Xing's question:

"So that's it, professor, there is one more question, how to measure the radius and divergence angle of the laser beam..."

"The measurement of this problem has requirements for the width of the slit,..."

"Well, I see, I still have a question."

"..."

Soon, Zhou Xing and Professor Chen fell into a question-and-answer rhythm under everyone's somewhat dull gazes. Zhou Xing showed a look of sudden enlightenment from time to time, eagerly absorbing the knowledge that Professor Chen gave him.

In the blink of an eye, more than ten minutes passed, and Professor Chen Jianbin, who was answering Zhou Xing's difficult questions, felt slightly sweaty on his forehead. However, Zhou Xing's questions seemed to be endless, one after another.

How much has this guy learned, and how can he accumulate so many questions?
Seeing Chen Jianbin's tired face, Wang Quan's expression couldn't help changing, as if he had a premonition of his end.

I thought that 10 yuan could be easily earned into my pocket, but I didn't know that it was the case. Wang Quan looked at Zhou Wenhai and said bitterly, "Mr. Zhou! You are not easy to earn this money!"

For Wang Quan to say this, the money was well spent!

Zhou Wenhai laughed, very happy, and his heartache for the high "tutoring fee" disappeared.

(End of this chapter)