Wei and Jin cooks

Zhao Hanzhang just sighed casually, but Fu Tinghan lowered his eyes and thought about it, and then said: "It is not difficult to generate electricity. Not to mention that we have hydraulic facilities now. We can also find coal mines and even use human power to generate electricity. Telegraphs are transmitted by short waves. Now The ionosphere is very clean, and even though there are many dense forests and water networks, I believe that radio waves can be transmitted."

"The technical difficulty lies in the electronic tube. I can't do it in a short time. All I can say is try your best. You see, you need to wait for a long time."

Seeing that he was seriously analyzing the feasibility, Zhao Hanzhang opened his mouth wide, and it took him a while to find his voice, "Then...then give it a try."

Zhao Hanzhang began to think hard about the physics knowledge he had learned in junior high school and high school, and finally dug out a little bit from the depths of his memory, "What about the battery?"

Fu Tinghan smiled and said: "This is not so difficult. If we can make electron tubes, then we can definitely make qualified zinc sheets and copper sheets. The simplest batteries are aluminum, zinc, tin, iron, copper, silver and Gold, any combination of two of these can transmit current. Zinc and copper have better transmission effects. You can use both of them. The technology may not be very good, and the efficiency of use is far less than modern, but as long as it can be made, like 19 It’s still okay to use Century like that.”

"In the future, when technology comes up, we can also use carbon rods and zinc to make dry batteries, or use lead dioxide to make reversible batteries." Fu Tinghan became more and more excited as he talked, "I still prefer reversible batteries. Dry batteries cannot be used after they are used up." , reversible batteries can be recharged and used repeatedly.”

As a mathematics professor, how could he only study mathematics?

His physics knowledge is comparable to that of his colleagues in the physics group. Science subjects are interoperable, especially mathematics and physics.

Fu Tinghan became excited and took her more seriously than Zhao Hanzhang. He directly took her to look at the map.

This is not a theoretical difficulty. He knows all the theoretical principles. This is a technical difficulty and needs to be worked back.

Before Fu Tinghan, whether he was making glass, making iron or steel, or working with water mills or hydraulic forging presses, he was just doing his job. He wasn't very excited, nor did he find it challenging.

Because of the technology used in it, today's skilled craftsmen can do it. He just combines their skills or slightly improves them.

What they lack is not technology, but ideas. He doesn't say that in a few decades or hundreds of years, someone will think of taking this small step forward.

But electricity is different.

There is no electricity in this world.

They really need to create something from scratch, and the technology used in it, no one can make it except him.

When he was studying, the batteries, electrode tubes, wires, etc. that were used were all ready-made, but now he needed to work backwards and make them bit by bit.

If he used to stand in front of them to guide them and teach them to choose the right path; now he wants to clear a way for those behind him in the thorns and wilderness.

This sense of accomplishment is no less than doing math problems, which makes him happy.

He pulled Zhao Hanzhang to look at the map, "This mountain forest is very large, so it is difficult to transmit directly between these two points. Fortunately, there are mostly cultivated lands here. As long as it is not rainy, it should be able to be reflected from here." , it just takes a little longer..."

But compared with the current speed of information transmission, the time it takes for the tortuous transmission of radio waves is not worth mentioning at all.

During World War I, wireless telegraphy was used on the battlefield. At that time, it could transmit thousands of kilometers. Fu Tinghan felt that it could definitely be done now.

But to do this, he first had to form a team.

Before Zhao Hanzhang could recover, Fu Tinghan had already entered the next stage. He turned around and asked, "Give Wei Jie to me."

Zhao Hanzhang came to his senses, "Who?"

Fu Tinghan: "Wei Jie and Ji Shuyan, I think they can be my deputy."

Fu Tinghan had contact with the people who took refuge in Zhao Hanzhang. These two people were relatively interested in the movement of matter and had certain research and talents.

Zhao Hanzhang blinked, "Wei Jie is now in Luoyang, but it is Ji Shuyan. I remember he is in the army?"

Ji Shuyan, a native of Wuxing, had originally come with Tianmen Gengzhou, Yingchuan Yugen and others to persuade her not to fight Gou Xi and throw herself into a trap. Ahem, it was a surrender.

Anyway, Ji Shuyan stayed in Luoyang after that and studied with Zhao Cheng.

News of the Xiongnu's southern invasion reached Luoyang. He immediately stepped on his sword and left Taixue and went straight to Bei Gongchun. However, Bei Gongchun politely rejected him after trying his kung fu and riding skills.

Ji Shuyan was sad and angry and ran to Yuzhou to find Zhao Hanzhang. When he left, he met Fu Tinghan who came to Bei Gongchun to discuss the war.

He did not dislike Ji Shuyan's poor riding skills and poor kung fu. No matter how bad he was, he would not be as bad as Fu Tinghan.

Like him, if you can't mount a horse and charge into battle, you can serve as a strategist from behind. If you have a good strategy and the general executes it well, isn't that also a victory?

Although Fu Tinghan finally discovered that Ji Shuyan was not very good at strategy, his IQ was still very high, so he kept him in the army for logistics.

When Fu Tinghan called him, he was calculating how long the newly collected food and grass would last for them.

As soon as he heard that Fu Tinghan called him, he took the list, thinking that he was asking about food and grass.

As a result, he asked his guards to take him directly to the main tent.

Ji Shuyan's eyes lit up, he immediately put the list away and stuffed it into his arms, speeding up his pace.

Fu Shangshu finally saw his military talents and recommended him to Governor Zhao to lead troops on the battlefield?

Ji Shuyan went to the main tent door and tidied his clothes before asking to see him.

Fu An came out to invite him, "Mr. Ji, please come in."

Ji Shuyan went in and saw Fu Tinghan and Zhao Hanzhang sitting and discussing something in front of the case.

Seeing Zhao Hanzhang, Ji Shuyan immediately stepped forward to salute excitedly, and wanted to state his views on this war and the strategy he had recently thought up...

"Let's talk." Zhao Hanzhang waved his hand to dispense with his courtesy, straightened up, turned around and walked to the desk on the other side to sit down, picked up the official document and began to approve it.

Ji Shuyan's heart was filled with words. He looked at Zhao Hanzhang, then turned to look at Fu Tinghan.

Fu Tinghan waved to him and asked Fu An to add another high stool so that they could talk while calculating.

Ji Shuyan stepped forward silently, glanced at something on the paper that he couldn't understand at all and asked, "What is this?"

Fu Tinghan said: "The current speed of information dissemination is slow, and it consumes a lot of manpower and material resources, and it is not safe. When the enemy is in the middle, information between allies and armies is not only slow to transmit, but also has the risk of being intercepted and leaked, so I want to look into communications radio.”

Ji Shuyan: "Fu Shangshu's words are reasonable, but what is a communication radio station?"

He understood the previous words, but he didn't understand the last four words.