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At this time, in the internal supervision R&D department, Huang Sheng and others looked very excited.

I still remember that the fourteen-year-old Li Yi used a copper wire to wrap around the iron rod out of curiosity, and after the electricity was turned on, he found that the iron rod that had no magnetic force in the middle could actually have magnetic force and suck the small iron nail next to it. As soon as the power was off, the magnetic force of the stick disappeared again, and the iron nail fell.

At that time, everyone just thought it was a novelty, and they didn't think that this electromagnet could be of any use.

Today, Huang Sheng had an idea, an epoch-making invention, which is very likely to be born because of the curiosity of a fourteen-year-old boy.

In the internal supervision and R&D department, generators, batteries, copper wires, and iron rods are all ready-made. Huang Sheng took matters into his own hands, ping pong a few times, and used a hammer to hit a thin piece of iron two inches long.

Li Yi watched from the side, and suddenly said: "Lord Huang, I thought about it for a while, what you just said is to use the naked eye to observe the length of time the iron piece is pressed down to determine the content of the password;

The word 'plus' should be replaced by one short and four long, and one 'urgent' should be replaced by two short and three long. In this case, the person observing the iron piece must not only count the number of times the iron piece is pressed down, but also remember the length of time it was pressed down each time, and it is easy to make a mistake.

Lord Huang, in order to make it easier to observe, I think it is possible to clamp a pencil at the front of the iron piece, and then put a belt in front of the pencil, and clip a paper strip on the belt, so that the belt holding the paper strip can be attached to the charcoal pen at a uniform speed;

In this way, when the iron sheet rises and falls up and down with the power on and off, a battlement-like line can be drawn under the paper, and the iron sheet is pressed down for a short time, and the bottom of the buttress line is short, and the iron sheet is pressed down for a long time, and the line below the buttress line will be long for the iron sheet to be pressed for a long time.

When we get the code, we don't have to worry about making mistakes, just take the slip of paper and look at it, comparing the length under each stack of lines. You can translate the content according to the preset codebook. ”

"Yes, yes, this is a good solution, just do it!" Huang Sheng liked this boy more and more, and praised it on the spot.

Chinese have been using lead for a long time, Qin Mu also made pencils early, and now whether it is the Ministry of Industry or the Internal Supervision and Research and Development Department, when drawing drawings, they are drawing with rulers, compasses, and pencils, and then marking detailed dimensions. Such drawings are formal, and they are no longer as "freehand" as the previous drawings.

Huang Sheng immediately found a pencil and wrapped it tightly around the iron sheet. The rest was left to the assistants to do, and they found a blank piece of paper, wrote the words "Long live my emperor", and then used dots and horizontal to make up a password under the four words. The word "we" is represented by "-、、、、"; The word "emperor" is represented by "、、、", and the four characters are roughly the same, except that the order of the -- is different.

In less than a pillar of incense, a few assistants made the world's first transmitter and receiver. The transmitter is called a simple, just like a clip, as soon as the clip is pressed down, it will be energized, and as soon as it is released, the power will be cut off.

As for the ticker. It is also very simple, a wooden board is equipped with a "7" device, and the horizontal on the "7" is an iron sheet that can move up and down, and the iron sheet stretches out over an electromagnet. There is a wheel on the left and the right in front of the iron piece, with a belt on it, and the belt is sandwiched with white paper. There's also a small light cannon, it's as simple as that.

"Start experimenting!" Huang Sheng had never been so excited, as if he had been beaten with chicken blood, his hair stood on end, and this roar almost shook the tiles of the entire Internal Supervision R&D Department.

The transmitter and receiver were placed in different rooms, and the two rooms were separated by about 20 zhang, and two thin copper wires were used to connect the transmitter and the receiver.

Everyone gathered around to watch, and it was so lively. "Quiet, quiet." After Huang Sheng finished shouting, he personally checked whether the battery and the transmitter had been connected. Then he took out the message he had made up, took a few deep breaths, and began to send a message, gently pressing his index finger to send out a "Tick! As soon as the transmitter here sends an announcement, it means that the power supply of the electromagnet is turned on.

In the room waiting on the side of the receiver, Li Yi and the others, who were waiting intently, saw that the iron piece of the receiver suddenly pressed down, and at the same time, the small light cannon lit up.

Don't worry, the small light cannon is lit up, just notify this side to prepare to receive the report, and when the small light cannon is lit three times, Li Yi immediately said: "Hurry up, quickly cut off the light cannon circuit." He shouted as he began to turn the belt evenly, and after another five seconds, the iron piece of the radio began to move.

The electromagnet generates a magnetic force to suck down the iron sheet, initiating a "click" sound, as soon as the power is off, the iron sheet will be bounced up by the spring, the iron sheet continues to rise and fall, and the pencil between the iron sheet draws a line of curves similar to an electrocardiogram on the white paper clamped on the belt.

Everyone held their breath and listened to the soft sound of "click", and felt that the sound was so beautiful, more beautiful than a fairy singing. Li Yi carefully counted silently, and after twenty "clicks" sounded before and after, the receiver stopped ringing.

Huang Sheng over there, at this time, was already like a bull running wildly, God blocked and killed God, Buddha blocked and killed Buddha, and rushed over: "How is it?!" What do you think?! Did you get it, did you get it?! ”

"Roger! Got it! Lord Huang, look at it, look at it" Li Yi's voice trembled a little, his hands were also trembling, and he finally took off the white paper clamped on the belt.

Huang Sheng snatched the white paper at once, looking at the line left on the white paper, although it was very faint, but it was enough to be clearly identified, at this moment, Huang Sheng's pupils suddenly dilated.

The curves on the white paper were so beautiful, more beautiful than the curves of a woman's carcass, and the blood in his body surged up for a while. Well, Lord Huang hasn't gone home to see his daughter-in-law for half a month, everyone should understand, understand more.

"Whew!" With a sound, Huang Sheng sat down with the white paper, and carefully compared the length under the curve, the short one was a V-shape, and the long one was a trapezoidal bottom with a wide top and narrow bottom.

The V-shaped shape represents the point, the trapezoidal bottom represents the horizontal, and the combination of the five or five points of the guò point and the horizontal is finally translated into four words: Long live my emperor.

"Long live our emperor! Long live our emperor! Long live my emperor" Han Zan Zhou Xiang had mad cow disease, and kept shouting and ran to the Pujia Palace.

Qin Mu couldn't help frowning when he heard his voice coming from afar in the Pujia Palace. When Han Zan arrived outside the hall on Monday, he immediately raised his voice and shouted, "Old Han, are you not sick?" ”

"陛xià! 陛xià! Great joy, slave and maid, congratulations, the telegraph has been developed, it has been developed."

Qin Mu still couldn't react, he took a sip of tea, and suddenly squirted out halfway through his swallow, Huo Di got up and slapped the table and shouted: "Old Han, if you don't die, get me in!" Tell me, the telegraph was really developed?! ”

Han Zanzhou was holding two pieces of white paper in his hand, one of which had the words "Long live my emperor" written on it, and there were a little horizontal lines under the four words, and on the other piece of paper was a line of undulating curves.

Qin Mu didn't understand what Dongdong meant on the two blank sheets of paper at first glance, but after Han Zan's explanation on Monday, the blood in his body began to gush up at once.

Although that certain "holy monarch" is not like Huang Sheng, who doesn't go home to see his daughter-in-law for half a month, he is still a young man in his twenties after all, and it is understandable that he is a little hot

"Your Majesty, do you remember that Li Yi, the electromagnet he invented last time, the most important thing about this receiver is to use the principle of that electromagnet to control a piece of iron to rise and fall and draw this curve."

This principle is very simple, and Han Zan Zhou also put a lot of effort into the principle of the transmitter before he came. This is a necessary trick for getting promoted and getting rich, otherwise you come to report the good news, the emperor asks you, but you don't know what to ask, and in a fit of anger, you may turn the good news of your promotion and fortune into bad news.

"Li Yi, that young man" How could Qin Mu not remember, that time Li Yi made electromagnetic electricity, and he also thought of the electromagnetic crane in later generations, which was a big iron plate that sucked up a car with a snap.

He was bent on getting a wireless telegraph, and he didn't know how a wired telegraph worked, so he didn't know what the presence of an electromagnet meant.

Now it's okay, the wireless telegraph can't be made, so let's just get a wire telegraph. By the way, the current battery power is not strong, how far can this transmitter transmit? If you can only transmit a few dozen steps, it is better for Lao Tzu to roar.

"Come on, drive the R&D Division."

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PS:I'm all uploaded by the current code.,So the update time is uncertain.,The second chapter is presented.,I continue to code words.,If it's fast.,There may be a chapter update tonight.,Guys look at the monthly pass.,Help me keep the seventh place in the classified monthly ticket list.,There's still a thousand oceans to take in the seventh place.。 I fought hard, and there were still a few waters, so I continued to code words. Ask for a commuter pass! (Want to know more exciting news about "Bright World"?) Open WeChat now, click on the "+" sign in the upper right corner, select Add Friends to add an official account, search for "Qidianzhongwenwang", follow the official account, and never miss every update! qdzww) (To be continued......)