"Sir, if this telegraph machine is modified, can it also be used in newspapers? In the future, people can use the telegraph machine to get the information in the newspapers. "
Li Residence West Courtyard.
Li Yu looked at Li Zexuan and Cheng Chumo who were fooling around for a while, and she suddenly came up with a suggestion.
"Huh? Little Yu, you are a genius! Your idea is very good! "
Li Zexuan's eyes lit up and exclaimed.
What Li Yu said was almost the same as the modern wireless radio! Thinking about Cheng Yaojin, Qin Qiong, Yuchi Jingde, and the other old men, holding a radio, listening to the radio and bragging, tsk tsk, this scene is quite interesting!
"Uh, sir, do you think it is possible? But this telegraph machine can only make "beep beep beep" sounds, and we still need to spend a lot of effort to convert it into words. I'm afraid it will be very troublesome ~ ~ "
When Li Yu heard Li Zexuan's approval, she was excited at first, but then she thought about the problem of translating the telegraph. The little girl held her chin and said with a bitter face.
"Hehe, this is not a problem. As long as we modify the basis of the telegraph machine, then we will not only be able to receive" beep beep beep "sounds, but we will be able to hear the other party's voice directly. There will be no need for a complicated conversion process!"
Li Zexuan said with a relaxed smile.
The telegraph machine that he was making now could only control the length of the sound according to the length of time when the current was off. But even so, it was already a huge improvement. Because of this process, it realized the purpose of using electricity and magnetic conversion to achieve the purpose of long-distance signal transmission.
Imagine that if a loudspeaker was added to the terminal of the transceiver, then when the transceiver received a message, it would generate an AC audio current with a frequency corresponding to the original sound signal. When this current passed through the coil of the loudspeaker (also known as the voice coil in the loudspeaker), a corresponding magnetic field would be generated in the voice coil. This magnetic field would interact with the magnetic field generated by the permanent magnet on the loudspeaker.
Therefore, this force will cause the voice coil to vibrate with the audio current in the magnetic field of the speaker. The diaphragm of the loudspeaker was connected to the voice coil, so the diaphragm also vibrated, and the vibration produced the same sound waveform as the original audio signal. This also realized the process of converting sound to current, and then from current to sound.
"Holy shit! This is awesome! This is awesome! With this thing, wouldn't he be able to transmit his voice from a thousand miles away? Damn, this is almost the same as the magical equipment used by the immortals! "
Cheng Chumo shouted excitedly, and his mouth was also full of "dirty words". He was only short of shouting "66666666", which made Li Zexuan quite speechless. If he didn't know better, he would have thought that this guy was from the modern era!
"You've seen an immortal before? Or have you used an immortal artifact? "
Li Zexuan rolled his eyes and said grumpily.
"Hehe, just because I haven't seen it doesn't mean I haven't heard of it! Little Xuan, isn't it in the 'Journey to the West' that you told us earlier? Hurry up and make a telegraph machine that can transmit messages like you said just now. When the time comes, let me play with it! "
Cheng Chumo rubbed his hands and chuckled.
"Play with your head! I don't even have one myself, where am I going to get one for you? Do you think it's so easy to make that thing? Anyway, I can't make it now! "
Li Zexuan was speechless.
It wasn't difficult to make a loudspeaker. As for the materials, it could be obtained with some effort. When he was in elementary school, he had made a simple loudspeaker himself. The raw materials used were very common, such as: paper cups, copper wire, glue, small magnets, double-sided tape, scale ruler, scissors, etc. The manufacturing process was also relatively simple.
The real difficulty of making a loudspeaker was the modulation and demodulation of the sound. Without this step, the loudspeaker could only produce irregular sounds, and it couldn't revert to a human's voice. It was still a piece of trash.
However, the modulation and demodulation required the assistance of some external circuits. In this era, there were no resistors, capacitors, diodes, or triodes. Li Zexuan could only express his helplessness. Tang Dynasty's scientific foundation was still too weak, and there were too few talents in this field.
"Sigh, if only I could groom a group of talents in the field of electricity. I don't expect them to invent a computer or television, just a radio would suffice. When the time comes, I can fork out money to build a 'Tang Dynasty People's Radio Station' and groom a group of broadcasting talents. That way, I would be able to listen to the radio at home. Tsk tsk, that way, my life in Tang Dynasty wouldn't be too boring!"
Li Zexuan sighed in his heart.
All along, the source of motivation for him to invent new things was just so that he wouldn't be too bored in the ancient era. As for strengthening the country, it wasn't within his scope of consideration. In his view, the current Tang Dynasty was already powerful enough, and there was no need for any additional technology. On the other hand, the entertainment in the Tang Dynasty was too lacking, and he needed to lead the way!
"Mister, is this very difficult? Is it because you can't make it? "
Li Yu understood the meaning behind Li Zexuan's words and asked in disappointment.
"Un, it's quite difficult!"
Li Zexuan clasped his hands behind his back and sighed: "But that doesn't mean we can't do it! The main problem is that there are too few talents in this field in Tang Dynasty. Nowadays, all the scholars are studying the Four Books and Five Classics. Who would be willing to delve into this field? If I were to rely on myself, I'm afraid that it would be difficult to make it! "
Actually, the main problem was that this fellow was too lazy. If he were to harden his heart and go into seclusion for two months, coupled with his perverse mental strength, he might be able to solve the current technical problems. However, the problem was that he couldn't harden his heart! If he couldn't live a carefree life as a rich second generation, why should he work so hard on the 'frontline of research'?
Previously, when Li Zexuan went into seclusion to build the telegraph machine in Drunken Wind Pavilion, he deeply felt how difficult it was to manufacture things without the foundation of modern industry! Now, he had a rough idea in his mind. That was, when the time was right, he would teach a group of disciples, specifically teaching them engineering and basic scientific concepts. He would let them explore and research on their own. He would be able to invent various scientific concepts under specific circumstances and make great 'discoveries'. Wouldn't it be great to be an 'old grandpa' who knew everything silently in the eyes of the world?
For example, he could lead his disciples to conclude Newton's three laws' through observation and experimentation 'and name them after himself, such as' Zexuan's three laws'.
Also, he could use a 'hypothesis' to propose the theory of the 'Big Bang' and use his' wisdom that far exceeded the times' to propose that everything was made up of microscopic particles such as molecules and atoms. Then, in the Tang Dynasty, he would mysteriously deduce the periodic table of the elements. Perhaps it would become a map of the mysteries of heaven that no one would be able to understand for thousands of years.
Another example was that when he was at home taking care of his children, he would casually use a block of ice to carve a triangular prism. From there, he would discover that sunlight was made up of different colors and use it to explain the formation of rainbows.
There were too many examples like this. He wanted to be the greatest scientist in the history of mankind, so how could he force himself to manufacture things every day?
Li Zexuan's ideas were perfect, but they were just ideas. After he transmigrated, troubles came one after another, and he didn't have the time to realize his great dream.
The only thing that was gratifying was that he had brought modern mathematics to this era, and there were already a group of children who could think in mathematics. One must know that mathematics was the most important foundation of engineering. If he were to vigorously develop engineering in the future, the current students of the School of Mathematics would definitely be his priority.
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