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For those in the field of cryogenic physics or electromagnetics, the electromagnetic cannon has never been an unattainable and mysterious product.

At the beginning of the 19th century, the Norwegians built the world's first conceptual model of the electromagnetic gun, and during the period of World War II, the Third Reich, the Japanese Military Department, and the National Office of the United States all conducted in-depth research on the electromagnetic gun, hoping that it could become an epoch-making weapon and change the course of war.

However, limited by the constraints of metallurgy, mathematics, and engineering technology at that time, the progress of the electromagnetic cannon in terms of practicality almost stagnated, except for the good hope of theory, in the engineering application almost wandered in the darkness of the eternal night, and there was no sign of any breakthrough.

After the end of World War II, after realizing that the current human science and technology could never solve the technical hurdles of stable and huge energy supply, miniaturization, heat dissipation, etc., countries around the world almost gave up the exhibition of electromagnetic guns, and instead focused on the guidance technology, hoping to make a breakthrough from here, and then solve the difficulties of the practical application of electromagnetic gun technology.

After all, from the science known to mankind, there is no other way than the guidance system to meet the requirements of electromagnetic guns in many aspects, such as miniaturization and instantaneous energy enormity.

Although scientists all over the world have invested countless energy and money in conductive materials, from World War II to the mid-eighties, there was no breakthrough at all, and the scientific community still wandered around in the same circle, until 1986, when Bernoz and Müller of IBM in Zurich, Switzerland, brought a ray of light to the conductive materials community.

Instead of looking for conductors with higher transition temperatures from common metal alloy systems, the two chose to explore conductivity from ceramic materials that are generally considered to have poor conductivity, and as a result, they found possible zài conductivity in the La-Ba-cu-o system, with a Tc (transition temperature of entering the conductive state) as high as 35k.

This has led to a worldwide boom in high-temperature conductive research, and then staged an unprecedentedly fierce battle to break the Tc record. Before someone is thrown into this plane. The research group of Zhu Jingwu and Wu Maokun from the University of Houston and the research team of Zhao Zhongxian from the Institute of Physics of the Chinese Academy of Sciences respectively stored more than zài9ok in the yBa2cu3o6+ system. So far, conduction research has successfully broken through the temperature region of liquid nitrogen (the boiling point of liquid nitrogen is 77K), making it possible to conduct large-scale research and application. Later, in 1988, Sheng Zhengzhi et al. found a compound of Tc=125k in the T1-Ba-ca-cu-o system. Raise the transition temperature of high-temperature conductive materials to a new peak.

Before the advent of high-temperature conductive materials, almost all conductors needed to be cooled by liquid helium to reach the transition temperature, and on the earth, the content of helium in the atmosphere is only five parts per million on average, and the liquid helium used by human beings is almost a non-renewable resource, mainly produced from natural gas. The maximum content of helium in natural gas can reach 7.5%, which is 15,000 times that of air.

However, the helium in natural gas is a product of the decay of radioactive elements such as uranium. Helium can only be pooled in natural gas when there are uranium deposits near natural gas mines, and there are not many high-helium natural gas deposits in the world, and the United States has more than 5o% of global reserves in terms of the distribution of global helium-containing natural gas reserves. With a decisive monopoly, the share of the republic in global reserves is only a pitiful o.2%.

When Zhao Yinong demonstrated the fluidity and conductivity of liquid helium to the junior class, the liquid helium used was only more than 2 liters, even in the eighties when the price of liquid helium was relatively low, the cost of these two real yàns was still close to 3o US dollars, and the estimated coolant required for practical electromagnetic guns was calculated in tons, even if the Americans had a lot of money. As a tool of war that needs to be used for more than ten years for daily use, it is impossible to afford to use low-temperature conductive materials that can maintain conductivity at the temperature of liquid helium.

It can be said that the reason why the United States restarted the exhibition plan of electromagnetic cannon weapons in the early 90s is inseparable from the breakthrough of high-temperature conductive materials.

Liang Yuan said that if this sentence is heard by experts such as Zhao Yinong, ten will not believe it, in the era when the Internet is not popular, such a highly professional thing as electromagnetic guns, from the perspective of knowledge, is absolutely monopolized in a narrow circle such as military industry, low-temperature physics, electromagnetic majors, etc., ordinary people in addition to knowing some basic principles, and being shocked by the domineering name of the electromagnetic cannon. There is definitely no knowledge of the relevant engineering knowledge.

No one knows that someone comes from the future of the Big Bang of Knowledge, after twenty years of the Internet all over this blue planet, as long as you have the heart, even the production process of the atomic bomb can be found on the Internet, and it is very difficult for Liang Yuan to get the kind of sample cannon that can be pulled out to fight armor on the Taiwan and US side. But it's not at all difficult to get a sample of a cannon that can penetrate a coin.

In Liang Yuan's extremely chaotic private life, a certain woman who regarded Liang Yuan as a blue face was a fanatic of cosp1ay, and in a large-scale two-dimensional event, she planned to dress up as Misaka Mikoto, the heroine of "Magic ** Catalog" who would use electromagnetic cannon skills, in order to get a shocking effect, Liang Yuan, who wanted to roll the sheets at that time, decided to use his science and engineering knowledge to serve hormones.

Of course, the principle of the electromagnetic cannon and the simple circuit engineering diagram at that time have long been rotten on the street, Liang Yuan had seen the Min Ke Ming family of Zhangjiazhuang Village, Beiwangli Town, Zhao County, Hebei Province, Hebei Province, applied for a patent for a high-temperature electromagnetic gun, thanks to the great Taobao, all the components required for the coil electromagnetic gun can be found - thyristors, large-capacity capacitors, copper core paint wires, voltmeters, boosters, circuit breakers, photodiodes...... All the costs add up to less than 5ooo blocks (Note 1).

Liang Yuanhongyan's performance was extremely successful, accompanied by the theme song of the world without barriers, a charming woman dressed in a wide kimono made Mikoto Misaka's classic action against a piece of pre-prepared multi-layer foam, the brilliance of the secondary pipe shimmered in the wide sleeves of the kimono, the light was slightly fixed, and a coin rolled out of the PE tube hidden in the arm, penetrated through the two layers of relatively thin foam, and was deeply embedded in the substrate baffle .......

On the night of the end of the cosp1ay event, someone scumbag had a wish, and successfully turned his red face into a friend, talking about literature and writing poems is a fart, in the era of science and technology, the girls who can use this old antique method to get their hands on are basically Wenqing dinosaurs, and afterwards Liang Yuan boasted triumphantly with Cai Xiaobing.

Liang Yuan was bluffing to deal with all kinds of questions about what the two girls were and when he learned to assemble that thing.

has been busy for more than ten minutes, and only after getting a satisfactory reply did the two girls let Liang Yuan go.

Seeing the two girls lying on their laps again and looking at the long white clouds in the sky, Liang Yuan breathed a sigh of relief, if Jiajia knew the real reason why he could assemble the electromagnetic cannon, would he be thrown into the muddy river to feed the great white shark, Liang Yuan thought in confusion.

How could Liang Yuan come out on his own to sponsor such a big move as the Youth Science Competition, and the three of them returned to the 9o9 community, and Liang Yuan called Liang Haiping directly.

In the evening, Liang Haiping and Zhang Yi came to the community with two carps.

The two girls and Zhang Yi went to the kitchen to get Liang Yuan's favorite boiled fish, Liang Yuan sat in the living room and told the idea he got from the two girls during the day, but because of the promise with Tang Wan, Liang Yuan didn't say anything about the tent problem that gave him a headache, but threw the cause of the incident on the head of the Qingke competition.

"Uncle also knows that the establishment of the entire Yuanjia and the Youth Science Competition has an inseparable relationship, without the Youth Science Competition, how can there be these messy things later, now our life is not bad, we can't always look at the place where we started is still living a tight life, can pull a hand or pull a hand. ”

"It's that simple?" Liang Haiping asked with a smirk.

Liang Yuan also knew that this set of rhetoric fooled the uncle two years ago, and now Liang Haiping will never believe it.

Wiping his nose with his index finger, Liang Yuan smiled and continued: "A few days ago, Lao Su and they had a meeting, and Uncle Xiao has been present, Inspur will be officially listed for business next month, I drove Liu Feiyang and Wang Xin to Inspur, I have to get something out to dissipate resentment." ”

"Lao Su and they are all cultural people, pay attention to a lot, it is estimated that let them advertise like a strong feed, what a strong feed is good, pigs eat pigs to gain weight, chickens eat chickens and lay eggs and other things are definitely not worth it, I think that the invisible advertising method such as the exclusive sponsorship of the Inspur Youth Science Competition is more in line with their aesthetics. ”

Hearing Liang Yuan say this, Liang Haiping felt that it was more reliable, nodded with a smile and said, "Xiaoyuan's statement is pretty much the same, but how does Xiaoyuan plan to sponsor it?"

"The Shangri-La Foundation is still in charge, and I plan to use millions of funds every year to improve the competition system of the Youth Science Competition, expand the participation subjects, support a group of interest groups closely related to the main business of Inspur, and improve the hardware conditions of the Children's Palace in some remote areas....... Liang Yuanyang said a few things freely.

"According to the statistics of the country's administrative territory, there are almost 1,000 counties in the country, and after the official establishment of Inspur, I asked Liu Feiyang to produce a batch of 186-level compatible machines, ensuring that each county's children's palace or central school has at least two computers produced by Inspur. ”

After listening to Liang Yuan, Liang Haiping lowered his head and calculated silently, and said: "The value of this batch of computers alone is more than 20 million, and Xiaoyuan's advertisement is really a loser." ”

ps: Note 1: The coil electromagnetic cannon was made by himself seven or eight years ago, and it was easy to use iron nails as ammunition to penetrate the can, and now it seems that there are electromagnetic cannon kits sold on Taobao, and it should be easier to assemble one.