Daming Military Empire

Chapter 225

It is not so difficult to build generators and cable telegraph sending and receiving devices in the Ming Dynasty. The main difficulty lies in the production of wires. It is really not a problem to put wires in modern times. It's everywhere, you can buy it in any grocery store in any small town, but it wasn't available in Ming Dynasty, not only Daming, but the whole world didn't have it.

Is the wire difficult to do?Modern people may not be able to understand, it is a very common thing, it is everywhere, so what is so difficult to do?
First of all, wire drawing is very difficult. The copper wires in the wires are all drawn out with copper rods. In the Ming Dynasty, there was no wire drawing machine to buy, so you had to make it yourself.How hard it is to squeeze copper out of a small hole like squeezing noodles, and how hard the wire drawing die that bears the extrusion force is.Moreover, it doesn’t mean that the copper wire is extruded and the job is over. You have to straighten the copper wire and roll it into a roll according to the speed of the extrusion wire. The speed of the coiling also has strict requirements. If it is too fast, the copper wire will be broken, and if it is too slow, it will be squeezed into a twist. This synchronization is not easy to grasp.

Then, just pulling out the copper wire is not enough. The wire is used to transmit electricity, and the outside must be covered with an insulating layer, which is what the saying goes.Modern electric wires are basically covered with a plastic insulating layer. Plastic is extracted from petroleum. In the Ming Dynasty, petroleum was not difficult to find, but extracting plastic from dark petroleum was compared to making wires. It's still difficult, but Zhu Cijiong still gave up after thinking about it.In fact, the insulating layer can also be replaced by rubber, which is much easier to produce than plastic, as long as the sap of the rubber tree is processed a little.South America, the origin of rubber, is now a colony of Spain and Portugal. As long as Zhu Cijiong says a word, Portuguese Macau Governor Shivela and Spanish Luzon Governor Coquian will definitely rush to find rubber for him from America.

The so-called all things are difficult at the beginning, as long as the electric wires are made, the generator and the wired telegraph sending and receiving device are relatively simple.

Like a generator, the shell is cast in a wooden mold, and then processed on a machine tool. There are also ready-made bearings, magnets are not difficult to find, and winding is similar to spinning, except that the yarn becomes a wire. That's all.The wired telegraph sending and receiving device is simpler. To put it bluntly, it is to take a wire and wrap it around a small iron rod a few times to make an electromagnet, and then switch the whole thing.

Of course, these simple things are only for Zhu Cijiong alone. For Daming and even everyone else in the world, these are unimaginable things. Let alone knowing, there is no concept of electricity at this time.Zhu Cijiong is also having a headache with this problem. He is the emperor, and it is impossible to wind coils and make electromagnets. If this set of things is made, the demand will be huge. Every county must have at least one set. I think Thinking of the amount, Zhu Cijiong's scalp would feel numb. If he had to do it alone, he probably wouldn't be able to finish winding the coils just sitting there in his life.

What will no one do?Then there is only teaching. Of course, Zhu Cijiong, as the king of the emperor, cannot go to Daming Institute of Technology to teach as a teacher. He can only choose one or two people to teach alone, and train them to be mechanical and electrical talents. Let them teach others.

Here comes the problem again. To study science, especially physics, talent is very important. A talented person will understand as soon as you talk about it. If you don’t have talent, you may nagging in his ear for a year or two. He didn't even know it, Zhu Cijiong didn't want to teach for a few years with a lump of wood, so he decided to select a small group.

What is the talent for studying science? Some people have really summed it up. If it is abstract, it means being smart, especially smart. If it is specific, it means flexible thinking and strong logic.How to judge whether a person is smart or not?Naturally, it was a test. For this reason, Zhu Cijiong personally came up with a test question, gathered a group of Jinshi from the Jiaxu Branch in the seventh year of Chongzheng, and organized a special palace test, which was called Bingzi Enke.

The people he organized this time are also very particular. First of all, they must be around 30 years old. If they are too old and their thinking has solidified, it will be more difficult to accept new knowledge; moreover, they must be loyal and upright. I don't want to cultivate a white-eyed wolf; as for why I only select from the Jinshi in the seventh year of Chongzheng, age is a factor, because there are basically no Jinshi under the age of 40 among the Jinshi in the first year of Chongzheng and the fourth year of Chongzheng, and there is a more important one. The reason is the position issue. The people he trains will be at least the third rank in the future, or even the second rank and the first rank. It is impossible without the title of Jinshi.

Combining these conditions, there were less than 30 people who finally met the requirements. Looking at these outstanding scholars, Zhu Cijiong couldn't help but feel a drumbeat. .

Even he himself was so nervous, what kind of difficult question did he ask?In fact, this topic is not difficult at all for modern people. Anyone who has gone to college can basically do it. The topic he proposed is:

今以0为零、1为壹、2为贰、3为叁、4为肆、5为伍、6为陆、7为柒、8为捌、9为玖，用以简化数字。

The current counting method is every decimal, such as 0 to 9 is a ten number, and then the carry is 10, that is, ten; 10 to 19 are also ten numbers, and the next carry is 20, that is, twenty, and so on.

If only the two numbers of 0 and 1 are used, and every binary digit, then 0 is still zero, 1 is still one, 10 is actually two, 11 is actually three, and 100 is actually four.

If counting by the binary method, 1010 is actually geometry, and 1110 is geometry?

If it is written in the binary method, how to write 7, and how to write 9?

This is actually the binary code of the basic content of logic algebra in advanced mathematics. It is naturally easy for modern college students, and it is extremely simple, but for these ancient college students, even equivalent to masters and doctoral students. It's like killing them!
Zhu Cijiong stared nervously at the group of candidates. Fifteen minutes passed, and two quarters passed.

His heart sank slowly, but he only gave them an hour, because this time he wanted to test their inflexibility and logic, and if they were given too long, it would be meaningless.Is this question difficult? He believes that if these people go back and study for ten days and half a month, no one will be unable to answer it, but what can that prove?At most, it can only prove that they are not stupid, and basically has nothing to do with science talents.

After half an hour, a candidate finally picked up his pen, but he looked at the test questions on the table and was stunned again.

Zhu Cijiong had been staring at them all the time. Now that someone was writing a pen, let alone how excited he was, why did this person stand still in a daze?He thought for a while, patted his forehead, and immediately beckoned Cao Huachun to come over, and whispered something.

Soon a group of young eunuchs walked in carefully holding a stack of thick white paper, quickly put a stack of paper on each examinee's desk, and then carefully retreated out.

Most of the test takers were stunned when they saw the stack of papers. Looking at the test questions, it was obvious that they were required to answer directly to the end of the question. Now they are handed out a stack of papers. What does this mean?
If they don't understand, someone will understand. The examinee who just picked up the pen saw the stack of blank papers immediately as if he had found a treasure, and excitedly put it in front of him and began to write quickly.

Seeing his confident appearance, Zhu Cijiong couldn't help standing up and walking over to see what he was writing, whether he was drafting and making simple calculations as he thought in his heart.

The emperor actually ran down in person, which was not common in previous imperial examinations. Although the candidates present were all senior high school scholars and officials in the court, they were inevitably a little nervous. There was no reaction at all, and I continued to write there.

Zhu Cijiong walked behind him and took a look. A piece of draft paper was almost filled by him. In the Ming Dynasty, the habit was to write vertically. Naturally, this one also wrote it column by column. The first column is capitalized zero to nine, The second column contains Arabic numerals 0 to 9, the third column contains Arabic numerals 10 to 19, the fifth column contains Arabic numerals 20 to 29, and the sixth column contains Arabic numerals [-] to [-]. [-]. The writing is very neat, and the space between words is even, as if measured with a ruler.

At this point, he had already started to calculate, he took another piece of paper, in the first column he wrote capital zero and one, in the second column he wrote Arabic numerals 0 and 1, in the third column he wrote capital zero One and one one, the fourth column contains Arabic numerals 10 and 11. When he reached the fifth column, he paused, looked at the title carefully, and then decisively wrote down one zero zero, one zero one and One by one, the sixth column is 100, 101 and 111.

Seeing this, Zhu Cijiong also showed an excited expression, such flexible thinking, such strong calculation ability, no need to think, this person must have figured it out.

Sure enough, the examinee quickly wrote down 1000, 1001, 1011, 1111 in the seventh column, and [-], [-], [-] and [-] in the eighth column, and then he carefully After counting, he decisively answered at the back of the test question:

If it is counted by every binary digit, 1010 is actually ten, and 1110 is actually ten.

If it is written in binary, 7 should be written as 111, and 9 should be written as 1001.

Completely correct, Zhu Cijiong resisted the urge to applaud, and glanced at the signature on his test paper, Xu Fuyuan, um, it's just him, it doesn't matter even if everyone else can't answer, this one is enough.

However, Zhu Cijiong miscalculated this time. Seeing him returning to the dragon chair with satisfaction, all the examinees knew that Xu Fuyuan might have answered correctly. Although no one peeked at his answer, many people imitated his appearance. It was written on a white paper, and an hour later, when the test papers were collected, there was indeed one person who got the answer right, but the name was a bit strange, it was called Xia Yunyi.

(End of this chapter)