Updated: 2013-01-29

Boys are different from girls, and they are clearly distinguished from the toys they like when they were childhood. This is caused by the different active brain blocks of men and women. When Wang Yiyi talks about cannons, although the female students in the classroom also looked curious, they were really much calmer than the boy's excited expression.

"Sir, can this really be made into a cannon?" The boy sitting in the first row had a bright light and he was very concerned.

"sure!"

"What a big magnet should I use!" The boy's female deskmate poured cold water. Although she was not trying to deny Wang Yi's affirmation, she didn't think that her deskmate was too embarrassing. It was too much like dreaming during the day.

Wang Yixiao. Although there are boys' and girls' schools in the Northeast, the Dashang Affiliated School has officially started to educate men and women's mixed classes two years ago. Because boys and girls who grew up in this way are more mature in terms of gender growth and cognition than single-sex schools.

"It's true that there isn't such a big magnet, and even if there is one, it's very troublesome to use. But when you advance to the next grade, the physics textbooks will teach you a new physics subject, that is electromagnetics! As for what is electromagnetics, it simply means the mutual conversion of electric fields and magnetic fields."

At this time, a pretty boy reacted and said, "Sir, I understand that as long as we have power generation equipment, we can build electromagnetic guns!"

In the era before Wang Yi traveled through, electromagnetic guns were still considered future weapons. The Celestial Empire was not behind in this regard, and it was no secret that it had its own research projects. However, there is still a gap compared to the United States. Yingshang is indeed the leader in this regard. In 2010, the US Navy announced that it had successfully tested the initial kinetic energy to 33 megajoules, the initial velocity of the projectile reached 5 times the speed of sound, and the range was 200 kilometers. However, in the era when anti-ship missiles flew, such weapons had little practical significance. Therefore, the next goal of Yingshang researchers was to increase the initial kinetic energy of the electromagnetic gun by 64 megajoules, the initial velocity reached 7.5 times the speed of sound, and the range was nearly 400 kilometers.

300 kilometers is a hurdle!

In addition to the legendary Dongfeng-21d in the Celestial Dynasty, few conventional anti-ship missiles have a range of more than 300 kilometers. Because exceeding this distance, the curvature of the earth itself will have a great impact on navigation. Ordinary anti-ship missiles need to be guided and attacked separately with drones or early warning aircraft.

In this era where Wang Yi is now, it is a dream to build an American electromagnetic gun. Even if we go back to modern times, there are not many countries that can really build an electromagnetic gun, let alone Wang Yi himself. However, in this era without missiles, the range of anti-ship missiles 300 kilometers is no longer a dangerous forbidden area, and the range of warship guns is about twenty kilometers. The electromagnetic guns seem to have room for survival in this era. Of course, this only exists on paper possibilities. The shorter the range, the lower the initial speed of the electromagnetic gun and the sharp decrease in power. Moreover, how to guide long-range shells to hit the target is also a problem that cannot be solved by this era. Therefore, although Northeast China has made some investment in electromagnetic guns, it is all pre-research, and it is impossible to waste too much when research funds are limited.

"Sir, can you really make the kind of electric cannon you said?" After the course, Xu Shichang was still struggling with this issue. The range scared him, and it was simply a magical method.

"The principle is there, but..." Wang Yi smiled. There were no students around him now. He came out of the classroom, which was similar to Zhao Zilong's fight against Changbanpo, with three layers inside and three layers outside. The guards who followed him couldn't stop the students. The guard chief Chu Yuan had a lot of opinions on this.

"how?"

"The current technology does not meet the requirements. To be honest, if you study it for a few decades, it is unlikely that it can be manufactured."

Xu Shichang secretly breathed a sigh of relief.

"I told the students these contents to arouse their interest in scientific research." Wang Yi gave the most normal result.

Electromagnetic guns are divided into coil guns and rail guns, but either one is too advanced for today's technology. Even if Wang Yi graduated from a related university major, there is no possibility of realization. What's more, he is still a medical student and has nothing to do with the electromagnetic guns.

The principle of electromagnetic guns is very simple. With the Faraday law of electromagnetic induction, people began corresponding research. In 1901, Professor Berkeland from the University of Oslo, Norway, created the world's first electromagnetic emitter. He also applied for the first world patent for electromagnetic guns. However, later he found that the technology at that time could not produce a sufficiently powerful pulse power supply, so the power of the electromagnetic gun would not be improved, so he gave up at the end of his life.

The electromagnetic rail gun appeared nearly twenty years later than this and was manufactured by the Frenchman Villerruber. Later, in 1944, Dr. Hansler of Germany developed an electromagnetic rail gun with a length of 2 meters and a diameter of 20 mm, which can accelerate 10 grams of cylindrical aluminum projectiles to 1.08 kilometers per second. In 1945, he connected two electromagnetic rail guns in series, making the shell speed reach 1.21 kilometers per second.

During World War II, Japan also studied induction-accelerated electromagnetic railguns and accelerated 2 kilograms of projectiles to 335 meters per second. However, because key issues such as materials and electricity cannot be solved, the research on electromagnetic railguns has fallen into a bottleneck.

The life of pulse power supply and gun barrel materials is now plaguing Dashang Research Institute. The main reason why Wang Yi did not invest heavily in electromagnetic gun research is also based on the above two points. The main person in charge of the project is Nikola Tesla, who was angry with Eddie to the northeast. Of course, this is just the least important one of his five or six research projects.

This Croatian, who was in his thirties, was very satisfied with life in the Northeast. He did research he was interested in every day in the laboratory of the Dashang Institute. In his spare time, he went to the bar to enhance his relationship with female researchers from various countries. The only thing that made him dissatisfied was that Wang Yi only came to the Dashang Institute for three days a week, and the number of times he met him was only once every half a month. This was unbearable for Nikola. Although it sounded a bit emotional, there were only a few people who could conduct relevant academic exchanges with Nikola in the Northeast. Wang Yi's forward-looking vision was deeply admired by Nikola.

It is exaggerating to see each other for three autumns, but Nicholas is often busy with government affairs and has many complaints about Wang Yi. In his opinion, Wang Yi's inadequate work has seriously affected the technological progress in the Northeast and hindered the speed of human technology development. Wang Yi, who knows his own affairs, is helpless about this. He is not a god. No one knows how many tricks he has, and no one knows better than himself.

In fact, Wang Yi and Xu Shichang didn't tell the truth. The Dashang Research Institute did not conduct large-scale research on electromagnetic guns, but the two problems that trouble the research were pulse power and gun barrel materials. At least the former Wang Yi knew the solution - that is, by instantly releasing the energy contained in the high-speed rotating flywheel, the pulse power required for the electromagnetic gun can be obtained. What Nikola is doing is research in this aspect.^-^^-^
Chapter completed!