Yu Hua looks forward to the school’s attitude towards portable lighting sources.
If you support it, you can still barely maintain your current composure. If you oppose it...
Yu Hua could only give up reluctantly.
After all, although portable lighting sources are a necessity for students, in fact, they violate the school's dormitory management regulations. The school has turned a blind eye to students using kerosene lamps to read.
The attitude from the school is very important.
From a personal point of view, Yu Hua hopes that the school can support it, or at least not oppose it, although life is not just about the present.
But what Yu Hua wants now is to be content.
That's hundreds of oceans, and converted into RMB in later generations, it's tens of thousands of yuan.
Fang Yu, who was directly abandoned, bit her lip: "..."
I could only watch helplessly as Yu Hua was summoned by Mr. Ren.
Helpless, yet irritable, my whole mood suddenly became bad. Yesterday, the huge noise in the boys' dormitory had spread throughout the school. After a night of fermentation, everyone was extremely curious about the portable lighting source that Yu Hua had made.
Especially girls!
Due to the differences between men and women, girls cannot go to the boys' dormitory to watch it up close, let alone experience the taste of independent electric lights.
After running morning exercises today, Fang Yu, who is usually quiet and low-key, couldn't hold back the curiosity in her heart.
I don't know when he will come back.
Sitting in her seat, Fang Yu could not help but stare at Yu Hua outside the window.
When he came to the corridor, Mr. Luo Wenguang looked natural and showed no emotion. Yu Hua showed an ignorant and innocent look and greeted him respectfully: "Hello, sir."
"Yu Sheng, I heard that you made an independent electric lamp?" Luo Wenguang looked at the young and somewhat innocent Yu Hua and smiled.
"Mr. Hui, in the dormitory where the students live, students light kerosene lamps to read and study every day. The light of the kerosene lamps is dim, which leads to weakened vision. The students remembered the knowledge they had learned in physics before, and after studying for a while, they used the equipment on the market to make a
Set up a portable lighting source, that is, an independent electric lamp, so that students in the dormitory can read under the light of the electric lamp, thus reducing the damage to the eyes." When Yu Hua heard Luo Wenguang's inquiry, he immediately said what he had already prepared in his heart.
Focusing on describing the disadvantages of kerosene lamps, emphasizing that dim light will lead to weakened vision, the purpose of making this set of independent electric lamps is for the dormitory classmates, not to make money.
Not a word was said about making money from portable lighting sources.
When Luo Wenguang heard this, he immediately became interested: "Oh? Will dim light also lead to weakened vision?"
This was the first time he heard this theory.
"Yes, just like when you are reading a book, if you are in a dark environment, your eyes will become astringent and swollen after a while, which will lead to weakened vision over time." Yu Hua briefly explained, popularizing common sense that is known to everyone in the future.
The common sense that most people in later generations understood was extremely novel during the Republic of China period when knowledge was scarce.
For example, dim light leads to weakened vision. Many teachers, teachers, and students have experienced this, but they have not summarized it into written theoretical knowledge.
"I didn't expect kerosene lamps to have such disadvantages, so when reading, you must read in a bright environment?" After listening to the concise and straightforward description, Luo Wenguang recalled that when he read in the past, it was indeed as Yu Hua described.
, sighing in my heart.
Yu Hua nodded: "Yes, but it is not good if the brightness is too high. Too high a brightness will reflect light and also cause vision loss."
“Not bad, not bad.”
Luo Wenguang looked at Yu Hua and nodded in praise: "This idea is very good and can be promoted to the whole school. Yu Sheng, how effective is this set of independent electric lights you made, and how long can it provide stable lighting?"
"Using 100-watt incandescent lamps, a dormitory is bright and bright. The brightness is just right. It has little impact on vision. It can provide stable lighting for about 3 hours. A set of equipment can be used for at least three years." Yu Hua heard Mr. Ren's questions as if he knew them all.
Give relevant performance parameters.
Luo Wenguang nodded repeatedly and continued to ask: "What about the fee?"
"Charging once a day costs about 10 cents," Yu Hua replied.
"It costs only a dime a day, three hours a day, which is much more efficient than school lights. It has a service life of three years. No wonder so many students went crazy last night."
After Luo Wenguang got the data, he immediately calculated the monthly cost of the portable lighting source and praised: "The independent electric lamp you made is very good."
"Uh... Sir, don't you criticize the students?" Yu Hua was confused when he heard Luo Wenguang's praise and asked cautiously.
"criticize?"
Luo Wenguang was a little confused: "Sir, why should I criticize you?"
"This set of equipment made by students violates the dormitory rule of turning off the lights and going to bed at 10:30. It made so much noise last night. I thought you would criticize me," Yu Hua said in a low voice.
"Which of you has ever really abided by the rule of turning off the lights and going to bed at 10:30? Late at night, all the kerosene lamps in the men's and women's dormitories are lit. The school will not blame you for this." Luo Wenguang laughed and shook his head, looking at the somewhat cautious Yu Hua,
said.
The rule about turning off the lights and going to bed at 10:30?
Ask yourself, have you ever complied with it?
Since the founding of Peiping No. 4 Middle School, this rule has been in vain and no students have complied with it.
After each No. 4 middle school student finishes his evening self-study, he either goes to the library or returns to the dormitory to continue studying, and does not go to bed until twelve o'clock.
"..."
When Yu Hua heard this, he didn't know what to say.
"Sir, what about the independent electric light? Many students want to buy one." Taking a deep breath, Yu Hua asked the most critical question.
Luo Wenguang waved his hand and didn't care: "If they want to buy it, you can just buy it. What's the point?"
"Okay..." After receiving Luo Wenguang's answer, Yu Hua's mouth twitched slightly, thinking that he had been thinking about it for so long last night, but his worries were all in vain.
The attitude of the school seems to be that they don't care.
Yes, I don't care at all.
Beiping No. 4 Middle School, which is good at Buddhism.
"Since you can invent this kind of independent electric light for your dormitory classmates, how can your husband criticize you? I hope you can become an inventor like Edison in the future. Okay, go in and get ready for class." Luo Wenguang showed a gentle smile and encouraged
After a while, he signaled Yu Hua to go in and get ready for class.
Yu Hua nodded and was about to return to the classroom when he suddenly thought of something he had not done yet. While Luo Wenguang was here, he said directly: "By the way, sir, the student has an unkind request. The student wants to change his name."
Change name.
This was something I had planned before. I have been so busy since school started that I almost forgot about it.
During the Republic of China, name change was a very common thing. Name changes by literati were called Fengya. Most celebrities in the literary world changed their names. For example, they changed their names to Lu Xun. His original name was Zhou Zhangshou, and later he changed his name to Zhou Shuren. After ten years of tree cultivation, a hundred years of cultivation of people.
meaning.
Wen Yiduo's original name was Wen Jiahua, which was later changed to Wen Yiduo, the traditional Chinese painting master Xu Beihong was originally named Xu Shoukang, the geologist Li Siguang was originally named Li Zhongkui, and the well-known Mao Dun was originally named Shen Dehong.
Name changes are not uncommon in this era.
However, as a student of No. 4 Middle School, Yu Hua must go through the school to change his name. Otherwise, unilateral name change will lead to many misunderstandings.
Upon hearing this, Luo Wenguang raised his eyebrows, looked at the respectful Yu Hua, and asked, "What name are you going to change to?"
"With the word "Hua", remove the wooden character next to it, and take my name as the Chinese character "华之华." Yu Hua said the new name truthfully.
Luo Wenguang thought about it carefully and commented: "Yu Hua, this is a good name. It is grand and upright. Are you sure you want to change this name?"
"OK." Yu Hua nodded.
"Well, you go in first and come to my office during the lunch break. Changing the name requires the signature of the principal, which is quite troublesome." Luo Wenguang nodded and warned.
Yu Hua quickly agreed and without any delay, said goodbye to Luo Wenguang, turned around and entered the classroom, returned to his seat and sat down under the eager and curious eyes of all his classmates.
"Yu Hua, what did Mr. Ren tell you?" After Yu Hua sat down, Zhou Yuan leaned over and asked.
Yu Hua shook his head: "I just asked about the basic situation of portable lighting sources. It's nothing. Class is about to start. Let's talk later."
After finishing speaking, I lowered my head to sort out the Chinese books and get ready for class.
At this moment, Yu Hua suddenly felt someone in front of the table. When he looked up, he saw that it was Fang Yu.
"Classmate Yu Hua, can you tell me about portable..." Fang Yu stood in front of the table, pursed her lips, and said softly.
"Boom!" Before Fang Yu could finish speaking, a low and distant bell sounded outside the classroom.
Class is on.
PS: Sorry, there are too many things going on at home these two days. I will update more tomorrow.