"Five times the speed of sound, so fast, right!" Su Cheng was shocked, in his cognition, the supersonic train seemed to be the kind of maglev train, five or six hundred kilometers per hour, that is extremely fast.

However, Su Cheng's perception is actually wrong, and the maglev train is not a supersonic train.

The speed of sound is generally divided into three types, the first is subsonic, which refers to less than Mach 1, the second is the speed of sound, which is equal to Mach 1, and the third is supersonic, which refers to the speed greater than Mach 1.

Whether it's Mach 10 or Mach 5, it's hypersonic.

The name of supersonic in general means of transportation is only supersonic aircraft, and there are no supersonic trains on the earth for the time being, because the technology is not up to standard.

"Boss, it's not fast. Denji took Su Cheng to the laboratory, and said as he walked: "Of course, compared to the current tools of the earth, it is indeed very fast. At a maximum speed of Mach 5, the acceleration time is extremely short, as short as Mach 5 from zero to Mach 5, in just ten seconds. ”

"Among them, the acceleration involved is very large, no less than the pressure when the astronaut takes off on the rocket, and the decompression device in the weight reduction chamber can keep people in a stable state in the high-intensity acceleration. ”

Dian Er explained this, Su Cheng understands, this is the same as when driving, it doesn't matter when the speed is constant, but when accelerating or decelerating, the acceleration will put people in an unstable state, such as taking a bus, the driver suddenly brakes, and he will fall if he is unstable on his feet.

This is still at a speed of tens of yards, when it is magnified to thousands of yards, and a sudden deceleration or acceleration at this speed will kill you.

"What about metallic hydrogen?" Su Cheng asked again.

Dian Er said: "Metallic hydrogen is a metastable substance of hydrogen, and now only the top laboratory in the United States can prepare it in the world, assuming that in a sense, metallic hydrogen is the evolutionary version of graphene, and graphene has the properties that it has, and it has most of it, and graphene does not have it." ”

"Specifically, metallic hydrogen has strong electrical properties, which is not only a huge energy storage substance, but also a relatively stable superconductor at room temperature. Supersonic trains need it for ignition fuel, and they also need it for levitation wheels. ”

"In the tunnel, in a state of relative vacuum, the material that lays the track is metallic hydrogen. ”

Su Cheng nodded as if he didn't understand, and then asked, "Metallic hydrogen is very valuable?"

Dian Er shook his head: "Yes and no, it's not worth much in the Science and Technology City, it's not that there are no materials that are better than it, but it's very valuable on the earth, a ton of metal hydrogen can be sold for billions, and the research value is very great......"

"When we get metallic hydrogen, the boss can put this material out and sell it to the military or other countries at a high price, and make tens of billions, or even hundreds of billions, it's easy. ”

As he spoke, Denji smiled treacherously.

"Is it so expensive?" Su Cheng's pupils dilated, and at first he didn't think about it, but when Denji mentioned the potential value of metallic hydrogen, he was energetic.

However, then again, metallic hydrogen is expensive because of its rarity and research value.

According to Dian Er, if this thing has energy production, it is definitely a black gold material that is an order of magnitude higher than graphene.

"Oh yes, metallic hydrogen is still a kind of nuclear confinement material, if you get it right, you can make controlled nuclear fusion at room temperature, and the nuclear fusion device you pumped before, the confinement material is metallic hydrogen. ”

Su Cheng's eyes rolled, "How long will it take to get it out?"

Denji shook his head, looked at Su Cheng and said, "This...... It's up to you, the boss. ”

"What do you mean?" Su Cheng frowned.

"My library hasn't been upgraded, and Metallic Hydrogen is an epic item...... But now that you've got to the center of the tunnel, and the metallic hydrogen is the track material for the tunnel, then ...... In the Science and Technology City, the corresponding production line purchase authority will definitely be given, and you will definitely find the answer if you look at the Science and Technology City. ”

Hearing this, Su Cheng rolled his eyes.

Speaking of which, this guy turned out to mean this.

He also thought that the research funds of the second power were insufficient, it turned out that the database had not been upgraded, and there was no preparation plan for metallic hydrogen, so he had to ask Su Cheng to get some for him from the Science and Technology City.

"Science and Technology City? It should be Mo Lido's temptation, are you sure it can be done?" Su Cheng pondered in his heart and asked hesitantly. He'd never smoked metallic hydrogen.

"Boss, try it, it should work. "Electric two.

At this time, Su Cheng had already arrived at a laboratory with Dian Er, which was full of high-tech materials and equipment.

Finding a place to sit down, Su Cheng crossed Erlang's legs, and divided half of his mind into the [Tuhao System].

Currently, he has 390 Mission Points.

Finding Moridor's temptation, Su Chengcheng thought about keywords such as 'metal hydrogen', and conveyed his thoughts to the flower of temptation.

Bite!

[Metal Hydrogen Forging Plan]: 100 mission points.

[Metallic hydrogen production line]: 250 task points, 5 million technology points.

Note: Metallic hydrogen is an epic item, please use it with caution.

After getting two pieces of news, Su Cheng felt unhappy.

"250 task points plus 5 million technology points for a production line, it's just a grab. Su Cheng muttered in his mouth, looked at Dian Er and said, "Didn't you say that metal hydrogen is cheap in Science and Technology City, why is the equipment so expensive?"

Dian Er said with a smile: "Boss, metallic hydrogen is a conductor of metal electricity that presents metallic electrical bonding under high pressure, and it is a high-density, high-energy storage material, and to produce metallic hydrogen, it needs to work under high-intensity pressure, so it is ...... The size of the equipment is not small, and naturally, the price is also very high, and the main reason is the particularity of epic items. ”

Su Cheng looked at him and said, "I remember when you said that you could make a supersonic train, this is a provocation, right?"

"Boss, if you want a subsonic train, I can make it for you without metallic hydrogen, but...... Do you want to do the best, don't you think?" said the electric duo.

Denji is a scientist, and he has always pursued perfection and limits in his work, and some ordinary sales products are just that, but the internal facilities, he feels that he should treat them with the best attitude.

Su Cheng thought for a while, took a breath, and said: "Don't mention the science and technology points, I was going to use the task points for the lottery, and you are doing it...... Okay, I want to see how powerful metallic hydrogen really is. ”

To be honest, Su Cheng is also itching in his heart, according to Dian Er, metal hydrogen is a material that does not exist on the earth now, and Su Cheng is not interested in any electricity and superconductivity, the key is to care about its value.

If there is really such a high value as Dian Er said, it will be the red Grandpa Mao who will come in at that time.

Although Su Cheng always slandered that there was too much money and it was too difficult to spend it, when it came to this critical moment when he could make money, he would immediately show that he was very interested, and he wanted to make a lot of money.

His mentality is a typical businessman's mentality.

However, in any case, it is better to have money than no money, and it is not a bad thing.