Ruzai just went ahead and immediately started the production of Cuntou Radio. He recalled what he had studied in the past, and at the same time he praised himself and said that he was worthy of being a top student...
Daye was in the archives room perfecting the laws, and several experts from Lingshan in the medical center were still discussing the feasibility of resurrecting the deceased.
To make a large broadcast loudspeaker...of course it requires a lot of preparation equipment, and professionals who have been baptized by work in this era are also indispensable. Of course, this kind of large loudspeaker cannot be a radio station, it is just a wire on a telephone pole at the entrance of a village. It's just a cable broadcast, and the required materials are easily available.
As the most important information dissemination tool in rural areas, this thing has played an important role for a long time. Village cadres use the loudspeaker to issue notices, arrange work, and provide convenient information. Villagers can also listen to the radio through the loudspeaker to learn about national events.
It is precisely with the changes of the times and the improvement of people's living standards that people's production and lifestyle are also undergoing tremendous changes. In ancient times, this kind of trumpet was actually a "horn"!
The difference is that the horn can only make a vast and desolate sound, while the radio can directly curse people... So the front-end technology and the rear-end technology are essentially different ways of use. In ancient times, many things could be used Find its prototype.
Especially the tribe with the cow totem is best at making horns.
Later, from the horn to the gramophone, from the gramophone to the reed trumpet... The reed trumpet was regarded as a scene of the times in modern China. At that time, the People's Posts and Telecommunications Publishing House also published the book "The Making of the Reed Trumpet".
This kind of speaker has a coil at the front end of a horseshoe-shaped magnet. There is a swingable metal sheet in the middle of the coil. When an audio signal current passes through the coil, the magnetic field changes and causes the metal sheet to swing, which in turn affects the paper cone and produces sound. The basin is made into a cylindrical shape, and the magnets and tongue springs are installed in the cylinder and can be diffused in all directions.
Then, the more advanced ones were the dynamic speakers and cone speakers, which were called "roaring phones" at the time.
Therefore, a side-mounted technological point of the speaker is the oldest telephone.
There are many materials required, such as permanent magnets, core posts, magnetic plates, paper cones, voice coils... In fact, these things, like the horn, the original big speaker, were all available in the primitive era.
Yuzai first went to Yijun's factory to place an order. Yijun took Yuzhu and others to take over the job, which required a lot of precision glass originals. This was not a problem. Yijun was ready to bake it himself. He has now created many He would let newcomers or apprentices do the work of making tools and glass, but since Su Zai required precision parts, he naturally had to show his skills in front of those juniors.
However, after Yijun saw the design, his whole body fell into a pale and faded state.
Although Yijun was a little panicked, in front of his apprentices and the workers in the factory, Yijun must pretend to be as calm as an old dog.
Later, Yuzai came to Danzhu's factory and asked him to make "plastic".
Danzhu: "Serious material? Is it a very serious material?"
The earliest plastic was not made of petroleum. Although this plastic called "celluloid" had poor performance, it was easy to obtain and was one of the raw materials used to make gunpowder. Camphor was added to nitrocellulose, and then It can be obtained by dissolving it in alcohol. Its most common use is to make table tennis balls.
But what I want is phenolic plastic.
The ashes of coal are everywhere in the ironworks. The sodium hydroxide is obtained from the teacher Yun Neutron at the chicken coop in the explosion factory. Finally, the wood is steamed to produce juice. This is called wood retort, or it can be produced with ordinary coal. , produce methanol in this way, then use hot copper and air to oxidize it into formaldehyde, and then throw the formaldehyde into a water bottle to get an aqueous solution, which is formalin.
Combining the three, you can get phenolic plastic.
Then there are gold wires. Gold is rarer than copper and has better conductivity than copper. However, in this world of mountains and seas, gold was not scarce in the ancient wilderness. There are 114 gold-producing places in the Classic of Mountains and Seas, some of which are American copper, but there are not many gold mines. You can find them in the south by digging around, not to mention that you can trade with other tribes.
Here comes another large perfect horn, and Yan Zai asked Niu Cun to help make it.
Niu Cun was very confused at first, thinking that Yu Zai wanted the kind of enchanted horn that could send out floods, but that thing was really gone. Moreover, Niu Cun was also responsible for the livestock breeding statistics and was very busy.
However, Yu Zai said that it was not about enchanting the horn. Now the most powerful cow totem in the south is your village. This year, it just won the advanced pacesetter. Don't refuse. Who else would you rather take this matter? The higher-ups have already decided... ...
The wizard from Niu Village immediately thought of the steel medal, his mind came alive, and he happily accepted the job.
Then, you also need a piezoelectric crystal, most commonly quartz.
There are some other things...
Hongzhou's research points were rising rapidly. Yu Zai only focused on research and frantically clicked on the next round...
Then, it succeeded.
————
The big cold is coming.
It’s the last solar term of the year, and people in Hongzhou are purchasing grain and meat.
The fish and meat stall at Holy Bear is extremely popular.
In the name of "removing the old and welcoming the new", Yuzai established a festival to praise everyone's hard work in the past year. This festival was called "Suishou" in the Central Plains, and the purpose was to worship ancestors, but in Hongzhou Changes were made, so the ancient festival "New Year", which would have officially appeared only when Emperor Shun officially succeeded to the throne, appeared in advance at this time.
People were coming and going in the farmers' market, and the leaders came here from the oil mill and erected a tall pillar, right next to the Xinyi pillar. There was also a strange thing hanging on this pillar, which looked like Large model corner.
"The big horn of Cow Village?"
"It's incredible. Such a big horn... is handmade, not naturally occurring."
There are no such big cows in Hongzhou. Of course, Niu Cun used its own advanced horn-making technology to make the horn. The materials used were copper and bone.
"The essence of sound is vibration. When the pulse current passes through the coil on the speaker, the coil generates magnetism. This magnetic force will repulse or attract the magnet on the speaker, thus generating vibration and driving the speaker membrane to emit sound..."
The big horn is hung on the telephone pole, and the wind beasts are wandering around. This thing does look like what it should look like in the primitive era, but its function has exceeded the imagination of people in this era.
In the big horn, an electric sound suddenly appeared, and then, something shouted loudly!
"Hello... hello... listeners... friends... Hello everyone, welcome to listen to the weather forecast from the Meteorological Observatory... Tomorrow in Hongzhou will be cloudy to overcast, with rain. Please remember to bring rain gear when you go out...Tomorrow the temperature will be 18~14°C, the temperature difference will be small, the wind will be less than level 3, and wild fires are prohibited in the forest...Finally, I wish everyone a happy life, That concludes today’s weather forecast, see you tomorrow.”
The moment the voice broadcast ended, people in the entire market were shocked. They stared at the horn hanging on the wooden pole. It was clear that no one was blowing it from behind, but it could actually speak!
"What kind of treasure is that?"
"Can appliances be spiritual?"
"I heard it, it was the voice of Chief Yinglong!"
At this time, Yu Zai put her hands on her hips, looked at the big horn, and exhaled.
The village has electricity!
