Renault nodded, I'd heard them say that before.

"The Xuan tribe is a primitive tribe, at the beginning, there was no surname, since the secret cave was opened, and the secret art was learned, only the role of the name was known. The ancestors found a way to give themselves surnames. Bai Jing said.

It's a bit interesting, everyone takes a name, and the Xuan tribe takes a surname. A group of primitive people with hair all over their bodies, sitting together, pondering what their surname is, this thing is too joyful.

"The ancestors didn't know much, so they took their surnames with what they could see and feel, and at that time there were not many people in the tribe, and there were very few surnames needed, and when they saw the changes in nature, there were: metal, wood, water, fire, earth, wind, clouds, thunder, and electricity. ”

This one...... It's a bit hanging.

Are there any surnames earth and electricity?

Suddenly, Renault's body stiffened slightly, this special surname of his own, is also in this, Renault's surname is Lei, okay. Flame, naturally, is surnamed fire.

"These surnames felt a little inadequate at the time, so there were again: black, white, red, yellow, blue, purple. ”

This is the color, it is indeed easy to think that the surname of Xuanmen is very down-to-earth, but it is a bit strange when it is put into the current Da Chu, for example, Renault does not know the surname black and the surname purple.

"This is the origin of the sixteen surnames of Xuanmen, Renault, don't always worry about these little things. Telephone, crank phone is more important, we have a lot of questions. Bai Jing said, if it weren't for the reason for asking the shake phone, he wouldn't have bothered to explain to Renault, does it matter what the last name is?

The secret master's question is still relatively reliable, not like a tiger's teeth, always asking what is going on, why can the voice be installed on the phone.

Bai Jing is more concerned about distance, noise, and whether it can only transmit sound between two phones, and whether it can make the distance farther......

Renault has a headache, and whoever meets an old man in his early sixties, incarnated into a hundred thousand why, will have a headache. What he learned was that electronics should be used, and Renault could answer these questions, but one question could lead to ten questions, and if he continued to ask questions like this, he would never be able to explain them.

Between the questions and answers, Renaud felt that the secret master's knowledge gap was too great, and in order to understand this, he needed to start all over again and learn all the basics. At least you have to finish the junior high school electricity part, otherwise how can you explain it?

The easiest solution is to ask for multiple phone connections, and a primitive manual exchange will work.

Don't hear such a lofty name as the switch, and think that it is impossible, in fact, this is the easiest.

The switch, in fact, is the connecting line, all the telephone lines, are gathered together, and the wiring is completed by hand, which is the most primitive switch.

Those who like old movies have seen it, pick up the phone, shake the handle, and say: Pick me up whoever is whom.

The picture turns to the exchange room, a beautiful woman in uniform in ancient costume, inserts a plug into the corresponding jack, and the wiring is completed.

Renault can't make a plug jack yet, which is a bit complicated and too cumbersome. But he can solve it in a simpler way, as long as the two copper wires are connected, they can play the same role.

When Bai Jing and Flame heard this, they began to get excited again.

Do it, do it now, do it now, you can't wait for it.

Okay, then I'll show you, Renault commanded Zhang Tan, first put the copper wires of the four telephones together, which one you want to answer, connect directly, this way is the most intuitive.

Bai Jing understood it at a glance, and Renault drew a picture for them to see, and the knowledge and IQ of the secret master quickly understood the meaning of the switch.

Understand that there is a fart, Renault's phone is a toy, well, there is no stable power supply, there is not even a ring, plus the distance is too short, in addition to being a toy, if you want to transform from laboratory level to application level, how much effort does it take?

Anyway, Renault thinks that it must start from the basics, there is no half a year to a year, and the call distance cannot exceed a thousand meters.

"Senior, you want to communicate from a distance, right? Renault was a little impatient, the wired phone is impossible to popularize for the time being, and he doesn't have the heart to spend so long, voice lowering, signal amplifier, stable power supply, any of them, is enough for people to toss for months or even years.

"Yes, it's important. Bai Jing nodded and said, as a secret master, he knew the importance of information too well. When a natural disaster occurs in a certain place, it may have been a few days, or even a month or two, when it reached Sangjinlo.

Wait for the court to respond, and then convey the order, in the affected areas, either some people will not survive to rebel, or everyone will almost die.

"Seniors, if it was just a simple transmission of information, the telephone was not practical now, and the cable telegraph was feasible. Renault thought for a while and said, the principle of wired telegraph is simpler than that of wired telephone.

"Cable telegraph? What is this?"

"This ...... I can't tell it, I need to make it, and I understand it at a glance. "The wired telegraph is really too simple, as long as you know the electromagnet, all the problems are solved, and you don't need to explain a lot of knowledge points like a telephone.

People who have not been in contact with it think that the telegraph is magical, even more mysterious than the telephone. In fact, the principle of the telephone is more complicated, of course, this is relative.

Cable telegraph, remove all the redundant accessories, and leave the most basic things, and you will find that I can make one of this things. Cable telegraph, it's that simple.

The transmitter is a power switch, which can be pressed continuously, which can often be seen in old movies. The receiver, which is also simple, is an electromagnet column, and there is an iron piece on top of the electromagnet column, which is called armature, two to three millimeters away from the electromagnet column, and this can be adjusted according to the power of the electromagnet.

The transmitter presses once, through the wire, the electromagnet is energized, and as soon as it is energized, it has magnetism, attracting the armature to fall down and hit the electromagnet, so that a signal is sent and received.

It's simple, this is a closed circuit with two switches, a power supply, two wires, an electromagnet, a switch, and a four-piece set is complete.

What do you say, electromagnets are hard......

Lao Tie, let's have a snack, as long as you listen to more ears in junior high school physics class, you won't ask such a question.

The iron rod is wrapped with copper wire, and the copper wire is connected to the positive and negative poles at both ends, and there is magnetism when the electricity is on, which is called an electromagnet, and it is said that the electromagnet is mysterious and difficult to do?

If the difficulty of a wired telephone is five, the difficulty of a wired telegraph is not even one. Compared with the wired telegraph, the hand-cranked generator can be called high-tech.

Renault decided to show a small hand to the two seniors, and everything was ready-made. First get a copper sheet, a few nails for fixing, a small iron pillar, an iron sheet, and a circle of copper wire.

In just ten minutes, the elementary school student's experimental-level wired telegraph was finished, and Renault was a little embarrassed, feeling as if he was fooling people.

Huya slowly shook the generator, Renault pressed it lightly on the press, the copper piece touched the iron nail, the current passed through the copper wire, the electromagnet generated magnetism, and the armature was attracted to the electromagnet, making a soft 'click' sound.

After the performance, there should be applause here!

Renault looked up and saw that everyone, including Bai Jing and Flame, was confused, and he didn't know what he was doing, Renault, what are you playing?

"All out. Bai Jing saw that there were people all around, and he screamed angrily, he really couldn't bear it, the secret master was studying secret arts, and there was no one who understood the rules?

Even if this is the Shengong Palace, the deterrent power of Bai Jing, a veteran secret master, is still quite strong, and in the blink of an eye, there are three secret masters left in the room, plus the Nine Princesses and Feng Jun, they are apprentice maids, and they are qualified to stay, they can only watch, not ask.

"Renault ......"

Without him asking, Renault hurriedly solved: "Two seniors, this is an electromagnet, in the state of power-on, it will produce the power of iron absorption, which is the same as that of a magnet, but the suction of the electromagnet is controllable, and there will be suction only when the power is on." ”

Renault pointed to the electromagnet pillar and said, Bai Jing and the two thought for a moment, and they agreed with this statement. When explaining the phone call just now, they, like Renault, had already found the problem, and the more they explained, the more confused they became.

"Electricity, is a kind of magical power, in the metal can pass through, only when the metal is connected together, it is useful, here is disconnected, so the electromagnet column is not suction, only when pressed, connected together, the current will pass, the electromagnet column produces suction, the above piece is sucked down, the metal is connected together, and the sound is made. ”

Renault breathed a sigh of relief, as long as the two didn't ask questions about electricity, the cable telegraph was still very easy to explain.

Sure enough, hearing his explanation, the two secret masters immediately understood, and even the Ninth Princess and Feng Jun understood it, after all, this truth is too simple, and on the earth, it can be easily understood by elementary school students.

White, flames, around the simple telegraph level, looking back and forth, I don't know what I'm thinking, the room is quiet and uncomfortable.

Feng Jun finally couldn't hold back: "It's very novel, useless." ”

Press it here, and it rings again, this is a fart, anyway, Feng Jun didn't figure it out, what is the use of this so-called wired telegraph, it is worth the two secret masters to take the test for so long.

Bai Jing turned his head and glared: "Idiot." ”

originally thought that Feng Jun had been by his side for ten years, and he was also smart and sensible, and he was ready to officially enter the door wall within half a year, but who knew that he would say such a stupid thing, shame.

The flame didn't seem to hear it, and continued to stare at it, he had thought a lot, but there was still something he didn't understand.

The ninth princess couldn't bear to see Feng Jun embarrassed, and said softly: "The copper wire can be stretched." ”

Renault glanced at the ninth princess in surprise, this girl's life is not good, but her brain is very good. The wired telegraph is stronger than the wired telephone, and it is here that the signal exhausts slowly, basically ignoring the noise, and it can be used.

https:

Please remember that the first domain name of this book is .. Mobile version reading URL: m.