A real telephone is a hundred times more complicated than a microphone.
Magnets, wires, and diaphragms can all be made, but this circuit board immediately stumped Tong Xuan.
Nowadays, he has a lot of talented people under his command. Especially this time in the imperial examination, a large number of Jinshi did not go to the Hanlin Academy, but rushed to apply to go to the Academy of Sciences, and most of them asked to go to the Electric Power Laboratory.
Even if you are not given an official position or have no rank, it doesn’t matter!
Even though all the students have been studying the Four Books and Five Classics for more than ten years, and have been instilled with Confucianism since childhood, and they regard these inventions and creations as miraculous tricks, the emergence of the electric light has completely subverted everyone's perception.
Xu Pu, a talented scholar from South Zhili, the number one scholar appointed by Zhu Qizhen, still refused to enter the Hanlin Academy, and he did not want to be a commoner, so he wanted to go to the Electric Power Laboratory.
When Tong Xuan tinkered with the microphone, he stood aside and recounted the records about Ting Weng in Mozi's book.
However, when he saw the new drawings, as expected...he fell silent.
"I'm sorry for my lack of knowledge, but what... is this thing?"
Tong Xuan smiled bitterly and said, "This is called a telephone."
Xu Pu asked again: "What is a telephone...?"
"You can think of it as an ear to the wind, or it can be said to be a microphone with no limit on distance."
"No limit on distance..."
Xu Pu was silent again because he didn't understand.
"In other words, if one end is in Beijing and the other end is in Nanjing, can messages be sent directly?"
After a while, Tong Xuan said: "Theoretically, this is the case!"
The conversation between the two was very slow because they had to think for a long time every time they said a word.
Xu Pu tried to make a suggestion: "We can gradually extend the copper wire and test the sound transmission effect of each length."
Tong Xuan asked: "If it is really so simple, why did the emperor come up with such a complicated drawing? What are these parts used for?"
Xu Pu was silent again for a while, then shook his head.
Tong Xuan sighed and said: "Nowadays, the scale of the electric power team is getting larger and larger, and there are more and more new topics coming with it. To be honest, I, the team leader, am already somewhat overwhelmed."
I think back then, all the people in the Electric Power Laboratory were gone, and he was the only one left. Now, it's better. Due to rapid expansion, it has grown to 120 people, and there are 16 various electricity-related topics. His group
I was thinking about experiments every day even when I was eating and sleeping, and I was exhausted both physically and mentally.
Now another phone call came out, and Tong Xuan felt like he was about to collapse.
The two fell silent again, and the air was surprisingly quiet.
Xu Pu suddenly raised his head and said seriously: "Tong Hanlin, I'll leave the phone issue to you!"
"you?"
Tong Xuan's face was slightly surprised. Although Xu Pu had not been in the Academy of Sciences for a long time, he was the number one scholar in a new subject. Needless to say, he was smart and quick. What's more... he really had no energy.
I remembered that when I was in the Hanlin Academy, I also scorned the so-called science. By chance, I became interested in thunder and lightning, and that's how I made my future choice.
Tong Xuan thinks that his intelligence and talent are not as good as Xu Pu's. Nowadays, the subject of telephone calls is completely blank. Why not give it to him to try? Maybe it will work wonders?
To take a step back, even if the research cannot produce results, the emperor has not given a time limit!
Just let him lead a few people to study slowly, and report to the emperor when the results are produced.
"Okay, okay!"
Tong Xuan nodded heavily and said: "We will set up a telephone research group now, and you will be the leader. The members of the group can be randomly selected from the Electric Power Research Institute. If there is no suitable one, the scope can be expanded to the entire Academy of Sciences. I will look for it then.
Dean Bei wants someone!"
Xu Pu clasped his hands into fists and said, "Yes!"
In the afternoon of that day, the telephone research team hung up its signboard, which was considered to be officially established.
Xu Pu did not choose anyone, he just posted a recruitment notice outside, and then went back to read the book.
The electric light was enough to subvert cognition, but now I made a phone call and looked at the drawings on the table, and I suddenly felt that all the books I had read for more than ten years were in vain.
Because the Four Books and Five Classics are all about morality, benevolence and righteousness, monarchs, ministers, fathers and sons, there is never any record about natural science.
On the contrary, there are many treasures to be discovered in miscellaneous books such as Mozi Shu, Gan Shi Xing Jing, Meng Xi Bi Tan, etc., which are considered inferior.
However, Xu Pu searched through all the books, including a large number of unique and unique copies copied by Mei Chun in Nanjing, but there was still no relevant record.
During this period of time, people came to register one after another, but most of them were new scholars.
Xu Pu didn't pick and choose, he didn't reject anyone who came, he wanted them all.
However, this research group is very different from other groups because... there is no specific research method at all!
The Renjia Electric Lighting Research Group studies filament materials, lampshade materials, and vacuum extraction processes... In short, they all have specific directions.
There is also a battery research group, which mainly studies how to store the generated electricity, and it is said that it has been quite effective.
However, the telephone research team had no clue.
The only clue is a drawing, but no one can figure out the key.
It's almost like starting a project from scratch, and no one knows how to take the first step.
Xu Pu and others thought for many days to no avail, so they had no choice but to bite the bullet and ask the Pope to come.
Zhu Qizhen recognized this person and asked, "What's the matter with the Qing family?"
"I am stupid and I don't understand something, so I came here to ask your Majesty for some advice!"
Xu Pu lowered his body and looked ashamed.
In his understanding, the emperor has so many things to do all day long, how can he have time to tutor himself?
Moreover, the emperor has already given the research direction, but he still can't find a solution. This is very embarrassing!
If he hadn't been desperate, he wouldn't have come.
Zhu Qizhen asked in confusion: "What is going on with the Qing family?"
"About the drawings of the telephone, I...can't understand..."
Xu Pu finally plucked up the courage to express his doubts.
"What don't you understand?"
"It's mainly a circuit board. I've read all the ancient books and can't find any records related to it. What is the purpose of this circuit board and how to make it? Please tell me clearly from the emperor!"
This chapter is not finished yet, please click on the next page to continue reading the exciting content! "Oh, you said this..."
Zhu Qizhen nodded, then shook his head and said, "I don't know either."
Xu Pu:……
Seeing this, Zhu Qizhen could only explain: "I'm not lying to you, I really don't know."
Xu Pu was very puzzled. You drew the drawings, and you told me that you didn’t know?
What about the liar?
"I am from a..."
Zhu Qizhen planned to make up a lie and racked his brains, but he didn't know how to make it up.
Suddenly, an idea flashed in his mind, and he said: "It's a double scroll called Lu Ban Shu!"
When Xu Pu heard this, he immediately became nervous and asked, "Excuse me, Your Majesty, where is this book now?"
I don't know where Zhu Qizhen is, he just made up nonsense.
Regarding the design drawings of the telephone, he himself did not know the details. He only knew the function and general principle of the circuit board. As for how to implement it, he was not a communications engineering major, so it was normal for him to not understand!
After much deliberation, I could only find a folklore book, a rather mysterious one, preferably an ancient book with a mythological flavor, and just put it in there randomly.
Xu Pu believed it to be true. Lu Ban's book can be said to be the most amazing book in ancient and modern times. It is said that it was written by Lu Ban himself. However, most of the Lu Ban's books circulating in the world are incomplete copies.
Even these fragments, most of them were not written by Lu Ban at all, but were fabricated from folklore.
According to reliable historical records, Lu Ban’s original surname was Gongshu, and his given name was Ban. Because he was from the state of Lu, the world often called him Lu Ban.
Lu Ban's life is quite legendary. When he was seven years old, he had the ability to teach himself. After his adult ceremony at the age of fifteen, he began to travel on his own. Later, he became a disciple of Zi You, and he was proficient in it in just a few months.
All the skills of the master.
However, his talent was not put into use, and he lobbied other countries to no avail. After his self-confidence was frustrated, he chose to retire.
Legend has it that Lu Ban was drafted to work in the capital not long after his wedding. Because he missed his newlywed wife so much, he made a wooden kite in his spare time. As long as a person rides on it and recites a few spells, the wooden kite can carry him back thousands of miles away.
Gathering with my wife at home.
His wife was particularly curious about this. Once, after Lu Ban came home, she secretly rode on a wooden kite and chanted the same few incantations, and the wooden kite flew into the sky.
However, while Luban's wife was flying in the air, she suddenly gave birth and blood flowed out.
The wooden kite was originally made using a secret method. Once it was tainted by blood, its magic power disappeared immediately. Luban's wife fell from a high altitude, killing one and two.
Lu Ban regretted it and thought that it was all his fault, so he sealed up Lu Ban's book.
Since then, this book seems to have been cursed. If people in the world study the contents of the book without authorization, they will definitely become one of the lonely, widowed, lonely, lonely, and disabled people, commonly known as missing one.
Because this strange book is also called "The Missing One Door", it is even more mysterious.
When Xu Pu heard that the emperor learned the drawings from Lu Ban's book, he immediately thought of the curse of missing one, and his expression changed drastically.
Zhu Qizhen said calmly: "When I saw it, it was already incomplete. After all these years, it must have been destroyed..."
Xu Pu had to ask again: "Does the emperor still remember whether the description of the telephone and the circuit board was recorded in the book?"
"This...I really can't remember clearly..."
Zhu Qizhen could only speak vaguely and try to evade it as much as possible.
Xu Pu frowned and said, "Wei Chen takes his leave!"
"Hey, wait a minute!"
Zhu Qizhen suddenly stopped him and said: "Although I don't remember the records at that time, but... Why are we so helpless today that we can do things that the ancients could do? Many of Lu Ban's inventions and creations back then were not just flashes of inspiration."
, inspired by your feelings?"
When Xu Pu heard this, he was startled at first, then suddenly realized, and said: "Thank you very much, Your Majesty, for your advice!"
"Do you understand?"
"I understand!"
Xu Pu nodded and continued: "Please rest assured, Your Majesty, I will build the telephone even if I risk my life!"
"I asked you to study something, why are you risking your lives?"
Zhu Qizhen smiled, waved his hand, and said, "You might as well tell me, how far has your research gone?"
Xu Pu said: "I'm not afraid of the emperor's jokes. There has been little improvement these days."
"Nothing done at all?"
"I have made some attempts, but..."
"Don't hesitate, just say it if you have something to say!"
"yes!"
Xu Pu saluted, and then said: "The original idea of the ministers was to enlarge the distance of the microphone, and tested it from ten steps, twenty steps, thirty steps, fifty steps, and one hundred steps. Later, it was found that the distance was more than fifty steps.
There are still sounds coming, but they have become very weak and cannot be heard clearly."
"In addition, as the distance continues to lengthen, there will be more and more interference. For example, when a train is running, it will cause huge interference."
"I and others came to the conclusion that simply extending the copper wire of the microphone would not achieve the expected effect."
"So, I guessed that the key to the difference between a telephone and a microphone lies on that circuit board, but I don't know the secret behind it. It's puzzling!"
Zhu Qizhen nodded. Although the ancients had never seen anything, his intelligence was no worse than that of later generations.
People like Xu Pu are even much stronger than most.
Just relying on a sketch and without any practice, you can guess the key to the problem.
He is right, if you want to solve the problem of long-distance signal conduction, it is on the circuit board.
A telephone looks very similar to a microphone, but there is a world of difference between the two.
A microphone simply transmits sound through a medium, but a telephone must first convert the sound into an electrical signal, then transmit it to the other end through a wire, and then the electrical signal is converted into sound to complete a real-time call.
However, he only knows this principle and doesn't really understand how to operate it.
"You are right, the circuit board is the key. There are records about this circuit board..."
Zhu Qizhen thought for a long time, then took out a pen and paper and said: "Come closer!"
"yes!"
Xu Pu stepped forward and saw Zhu Qizhen drawing a rectangle and then drawing a few lines in it, twisting and turning, which was very strange.
"Your Majesty, this is..."
"This is the circuit board!"
"ah?"
"Don't worry, let me explain to you."
Speaking of this, Zhu Qizhen felt his scalp numb.
Let me explain to you a hammer!
I don’t understand either!
"Suppose this is a wooden board with wires on it. The wooden board is insulated... Your electricity team should have a clear idea of what materials conduct electricity and what materials do not, right?"
Xu Pu nodded and said: "It's roughly clear."
"That's good!"
Zhu Qizhen nodded and continued: "What should you do if you want to control the current?"
"Power up the line."
"Very good, then... what should I do if the power can be supplied from left to right but not from right to left?"
Xu Pu scratched his head and said, "I don't know."
"A new concept is introduced here, called semiconductors."
"What is a semiconductor...?"
"In layman's terms, it is a substance between those that can conduct electricity and those that cannot conduct electricity."
"Between conductive and non-conductive...what kind of substance is it?"
Seeing the confusion on Xu Pu's face, Zhu Qizhen could only say: "Don't worry about what it is. In short, there is such a substance called a semiconductor!"