As autumn begins, it gets dark earlier and earlier. The sunglasses that have just been made are useless. No one will wear sunglasses on the street in the dark.

"It's all you. You stupid. It's all you. Why didn't you do it sooner. It's getting dark. The sun is setting. Yingyu said as she looked at the setting sun.

"Then I can't help it. I can't hold on to the sun and keep him from going down. He's so big. Shang Wen said helplessly.

"Alas! I would have wanted to go there in the palace. Right now. It's boring. Yingyu finished and got into the car. The two came in high spirits and returned in defeat. However, Shang Wen seemed to have thought of something important. That's the telegraph. Shang Wen originally planned to invent the camera. However, when I was doing the point solution experiment, I felt that the time was ripe for the telegraph.

Batteries, copper wires. Plus electromagnetic inductors. Such a device would have only been slightly modified. These conditions Shang Wen suddenly felt a lot more mature.

The phenomenon of electromagnetic induction has been done before. For example, the experiment with a generator is a typical electromagnetic induction phenomenon. However, Shang Wen himself did not elaborate too much in theory. But that doesn't mean it doesn't exist. And no one found out.

"Smack" Yingyu saw Shang Wen thinking about things. Then he slapped his palm on Shang Wen's head. The main thing is that there is some anger in the heart. It's all to blame for this nerd's slow work.

"Oops!" Shang Wen screamed.

"Why are you hitting me". Shang Wen called.

"It's all your fault. Slow hands, slow feet. I'm really anxious. Yingyu said.

"Isn't there a tomorrow?" Shang Wen said.

"Tomorrow, tomorrow. I can't wait. Yingyu said.

"You know what I was thinking?" Shang Wen said.

"What?" Yingyu asked.

"I'm thinking about telegrams. Telegram ......". Shang Wen hadn't finished speaking. Yingyu began to mumble.

"Telegram? Can electricity still be reported? Yingyu asked. Yingyu knows that batteries exist. I also know what electricity looks like. She's been watching Shangwen do strange experiments. The electric spark produced Yingyu thought it was electricity. It's still numb and painful. In her knowledge. Electricity is dangerous. A woman's intuition is so sensitive. Shangwen has not yet popularized the danger of electricity. Yingyu already knows.

"The telegraph is the one that delivers the message. I'm going to invent a machine that is made up of electricity, horizontal wires. And then according to these machine transmissions, it is enough to accept these signals. Isn't your train slow? With the telegram, it was very fast and arrived. Shang Wen explained.

"Faster than a train?" Yingyu asked.

Shang Wen nodded.

"Hmm. Okay, I believe it. But I went back to the palace. I'll come and see tomorrow morning. Do it yourself slowly! After saying that, Yingyu got out of the car. The carriage had returned to Shangwen's office.

"Hurry up!" Yingyu got out of the car and turned around to urge.

Shang Wen shrugged helplessly. One of his arms is still injured. Can it be fast? But it's also hurt. A lot of things are left to someone else to do. For example, the approval of documents. Meng Yi took on the vast majority. In this way, Shangwen is a lot free. Otherwise he would definitely not have had time to do so many experiments.

Shang Wen soon began to make telegrams. In fact, the telegraph machine made by Shang Wen was the Morse telegraph machine, which did not appear before this telegraph with twenty-six keys, the magnetic needle telegraph, and the five-pin telegraph. The principle of these telegraphs is simple. All use electromagnetic induction. But he was very poor in maneuverability. or not suitable for current requirements. Like what. Twenty-six keys. Using the phenomenon of electromagnetic induction, a small copper ball with electricity is used to adsorb a small piece of paper with letters written on it below. This accuracy is poor. And regardless of the pointer at the back, the system established by the five needles is based on twenty-six letters. Instead of the later simplified code of dots and horizontal lines. This code can represent numbers. Letter. punctuation and more. There are tens of thousands of Chinese characters. Representing with numbers is just the right thing to simplify.

Shang Wen directly jumped a large distance of invention. Morse built a telegraph. Its transmitter is simple, consisting of electric keys and a set of batteries. Press the electric button and an electric current will pass through. A short time indicates a point signal, and a longer time indicates a horizontal signal. Its receiver device is more complex and consists of an electromagnet and related accessories. When an electric current is passed, the electromagnet becomes magnetic, so that the pen controlled by the electromagnet also records dots or horizontal lines on the paper. The effective working distance of this transmitter is 500 meters. This is the telegraph that Shang Wen is going to do.

But it takes a lot of money to popularize it on a large scale. The price of natural resin is definitely not cheap. The number is very scarce. And because of the geographical location. The latitudes are all above twenty. There is not a piece of subtropical, tropical climate region. None of the rubber. It is conceivable. The electrical restrictions of insulating materials on the Qin State were too great. Those Qin scholars who studied electricity needed to spend a lot of money to have insulated wires dozens of zhang wide.

"Whew". Shang Wen exhaled heavily. Shang Wen built a telegraph in the shape of a historical museum. Shang Wen looked at it for a while. At this time, it was already past two o'clock in the middle of the night. Shang Wen stayed up late again to complete the new invention. But the invention is well worth it.

The advent of the telegraph. Make the world small all at once. The transfer of information has become incredibly easy. Think about it. The train is getting bigger and bigger. The start is getting faster and faster. The telegraph could send news from thousands of miles away in a short period of time at the touch of a button. This is definitely a big advantage militarily.

The other party has just been dispatched. We know by telegram. The top also knew it. By telegram. The King of Qin could deliver the message to the commander at the forefront as quickly as possible. Think of that as an advantage. However, insulating the conductor becomes a problem. His price can be compared to gold. It's not impossible, though. The use of coal will provide Shangwen with new insulation. There is no coal. And oil. The potential of these two industrial raw materials is enormous.

The reason why Shang Wen invented the telegraph may have been subconsciously. The trigger may have come from an earthquake in Daiji. The speed at which information spreads has led to many deaths due to untimely rescue. This made Shang Wen worry in his heart. The telegraph was also in the course of the experiment. A hazy feeling was created. But now it's fine. The telegraph finally came out.

Because of the telegram. Shangwen was excited. He decided to step up. The camera was invented. A big surprise for Yingyu. Everything is thought of. There was also some silver halide that was not used in the morning. Shangwen decided to do more. Because there is also a development photo that also requires a large amount of silver halide. And I also had to temporarily remodel the room as a darkroom for developing photos.