"yes, let's see what it is... Telegraph! “

In the laboratory, Niu Ben was a little impatient, he had seen him in Qingzhou for ten years, and he had not seen anything in half his life.

He Dong grinned, for those of them who were buried in the laboratory, it was the greatest comfort to have someone to appreciate the fruits of their labor.

So he said, "Your Majesty, the two generals, please come with me." “

With that, he led the three of them to a telegraph.

Now in front of the three of them is a transmitter, this transmitter is very simple, in fact, it is a power switch, but unlike modern switches, this switch is a guillotine switch.

From this guillotine switch board there are two wires leading to a receiver ten meters apart, which consists of a coil wrapped in copper wire, an iron sheet on top of the coil, a roll for placing paper and a pen.

"Two generals, this is a complete telegraph, mainly press the switch, the whole circuit will be connected, the copper wire coil is energized to produce a magnetic force to attract the iron sheet down and make a dripping sound, this is a signal, and the current is cut off, the iron sheet will return to its original position will make a clicking sound, this is the second signal, through the combination of the length of these two signals, you can send intelligence to the other party." He Dong explained to Niu Ben and Luo Quan.

As for Xiao Ming, there is no need to explain at all, because the whole set of codes he got was given to him by Xiao Ming, and now the codes are sent according to the small book he gave.

Niu Ben and Luo Quan naturally listened in a daze, He Dong explained, and they looked at Xiao Ming helplessly.

At this time, Xiao Ming said: "You two tell He Dong a word, don't let me know, let He Dong send it to me by telegraph later, and I will tell you what you just said." ”

"And this kind of thing? Isn't this a tailwind? Niu Ben looked incredulous, but turned his head and said something to He Dong.

He Dong understood, sat in front of the telegraph and used the code given by Xiao Ming to initiate a telegram, and when He Dong sent the telegram, the iron piece pulled the pen, and the pen began to draw folded lines of different lengths on the white paper with the movement of the iron piece.

When He Dong finished sending the telegram, Xiao Ming said: "Luo Quan is not a thing! “

Niu Ben was dumbfounded at this moment, and Luo Quan scolded angrily: "You are not a thing, old mad cow!" ”

"Hahaha......" Niu Ben was scolded by Luo Quan, not only did he not get angry, but he became happy, he said: "I didn't expect this thing to be so magical, but the emperor, this distance is a little too close." “

"This doesn't matter, I let Su Liangcai lay the wires by the way, bury the telegraph wires by the way, as long as the wires are sufficient, you can go as far as you want, and the distance of thousands of miles is just a snap of a finger to use the telegraph, as for those cities that have not built thermal power plants, the temporary use of small generators is enough to maintain the telegraph."

The small generator in Xiao Ming's mouth is the small power generation equipment made by Su Liangcai when he first generated electricity in the laboratory, which is equivalent to a mini thermal power unit.

This was enough to provide a government power supply, so that the cable telegraph would not be limited by the lack of thermal power plants.

Once the telegraph was covered throughout the country, the imperial court's control over the country would be more timely in the future.

"Thousands of miles of sound transmission is just a snap of a finger?" Niu Ben and Luo Quan swallowed and foamed, in their opinion, it was really a miraculous ability.

"Science and technology are really amazing, no wonder the emperor wants to promote science and technology at any cost, and let the children of the poor families of Dayu go to school for free, if there are thousands of children of the poor families who understand science and technology, who else can shake the Dayu country." Niu Ben's ground turned red with excitement.

Luo Quan said: "That's right, since they are all allowed to go to school for free, they must be allowed to study hard, otherwise they will be beaten!" ”

He Dong couldn't help touching his buttocks when he heard this, and he said: "We students have all been beaten in the academy, and these beginners, middle schools, and high schools will definitely only be more severe. ”

Xiao Ming gritted his teeth and laughed, he did put a lot of pressure on education, there is no quality education in this era, and instilling scientific and technological knowledge is the primary task for him.

Therefore, the beginner's school, middle school, high school, and university in Dayu are not the age settings of contemporary schools, but according to the standards of Dayuguo, and the time from junior high school to high school graduation is only nine years, that is, three years of junior high school, three years of middle school, and three years of high school.

He went to school at the age of six to graduate at the age of fifteen, and after four years of university studies and entered a wide range of industries.

He thinks this time is quite short, but for the people of Dayu Kingdom, this time is still very long, after all, ten years of hard study can become an official, and the current education system all adds up to thirteen years.

"Education is the foundation of a strong country, and I naturally will not take it lightly." Xiao Ming said in an affirmative tone.

Now the country has gone through a difficult decade, from zero industrial base to between the first and second industrial revolutions.

Now he needs more elite talents to make the science and technology of Dayu move forward, and these elites who have laid the foundation since childhood and entered the laboratory after thirteen years of education will definitely surpass those who are halfway monks like Lin Wentao.

At that time, the science and technology of the Great Chongqing Kingdom will be able to achieve rapid improvement, after all, with the efforts of the older generation, the industrial base is already there.

After experiencing the wired telegraph, Xiao Ming looked at the three glass-like tubes that were being assembled in the experiment, which were exactly the tubes needed for wireless telegraphy.

This kind of tube is simply a signal amplifier, and only with this addition can the radio travel farther.

However, this kind of electron tube is very large, because this is the most primitive electron tube, and the material has not yet risen to the level of semiconductors, and only the most primitive gate rare earth material is used, but even so, this is also a problem for He Dong's team, and this is what their laboratory is really working on.

After all, the cable telegraph is too simple and does not require more than thirty people to study it together.

"Cable telegraph is no problem, and this can't be relaxed." Xiao Ming nodded to the tube.

He Dong understood, he said; "Now we are communicating with the School of Chemistry in Lutong, hoping that they will help us in materials, as long as the materials are in place, this electron tube is not a problem, after all, welding is not a problem after the power is on."

"Well, I'll tell him to cooperate with you." Xiao Ming patted He Dong on the shoulder.

Extrapolating from time, Europe's science and technology is now in the time period of the Big Bang, and various inventions and creations will emerge one after another, because this is the result of the accumulation of European science and technology.

In addition, they have been guided by the scientific and technological achievements of the Great Chongqing Kingdom, and they will avoid taking many detours, so as to accelerate in science and technology.

Therefore, he must not relax in scientific research.