Half-immortal civilization

Along the way, Professor Yang Hua discovered that the main construction material here is cement; but because of the indoor construction, ordinary cement is used, not the kind of quick-drying toxic cement; and the rest of the structure is either steel or aluminum. There is no other material.Some places that require plates are basically aluminum.

Facing Professor Yang Hua's question, Wang Qingwei explained: "In the long run, steel can be used for hundreds of years, and it can be used for thousands of years if it is well maintained; Concentrating light technology can already realize the self-production of aluminum on the moon, which is a stainless and cheap metal.

In comparison, the status of aluminum on the moon is almost equal to the status of plastic on the earth. It is an extremely cheap and excellent material.Therefore, on the moon, there are very few plastics in the current construction. After all, plastics also need blood transfusion from the earth.

Well, on the moon, aluminum is not only self-sufficient, but also the only material whose cost is lower than that of the earth.So it has to be used in large quantities. "

"Oh..." Professor Yang Hua was thoughtful. Wang Qingwei's words forced Yang Hua to start thinking again, thinking about the construction plan of the lunar launch base.Unexpectedly, in space, plastic is much more expensive than aluminum!

According to Wang Qingwei, the aluminum materials produced on the moon using technologies such as concentrating light and photovoltaic cells are even half the cost price on the earth!On the contrary, because plastic needs blood transfusion from the earth, the price is thousands of times that on earth!Increased costs, mainly transportation costs.

In particular, Wang Qingwei faintly revealed that due to the abundance of aluminum materials on the moon, the low cost, and the convenience of smelting, etc.Gaoshou Company is considering to build a space factory mainly made of aluminum.In fact, in some respects, aluminum can completely replace steel, or even surpass it.

The residence arranged for these people is a newly established temporary residence. Each room is 3*5 meters in size. There are three three-story aluminum structure beds inside. The height of the room is ten meters, and the top of the head is blue. The hood has a little bit of dreamy beauty.The five-meter-high wall below the room is isolated with cement; the upper part is isolated with simple aluminum plates.All are temporary residences.Wait for the construction of other places to be completed in the future.These places are to be demolished.

"Assemble, assemble! The newcomers come out to assemble and lecture!" An arrogant voice came from outside; but it can't be called arrogant, it can only be said that the tone is too loud!Lecture...

There are only less than 30 people who give lectures.A simple to clothing.It is a costume made by a master company imitating military clothes.It is also one of the work clothes in the master company, "Hello, I am the residence manager in this area. If you have any questions, you can come to me. My room is No. 001, which is easy to find. My name is Feng Haitao.

Also, there are a few things to watch out for; it's all about you, listen up.

First of all, any material in space and on the moon is very precious, even a garbage bag is worth more than an equal weight of gold.At least, gold in space is just an ordinary metal.Therefore, please learn to save money; if you are found to be wasting, you will be warned for the first time, fined for the second time, and expelled for the third time.A master company does not need low-quality talents!Even if you are a relative of Zhang Jingyuan's boss, you will be expelled if you are expelled.

The second point is that the sound insulation of your room is not good, please don't make noise.If it is found that it affects the rest of the neighbors, it may be punished to clean the toilet in serious cases.This is a very understaffed industry!I welcome you all!

The third point is to strictly work and rest.What we use here is militarized management, and what we use is still the time on earth.Please adjust your time accordingly.Eat at 7:8 in the morning and start working at 12:13; eat at 17:19 noon and start working at 22:[-]; eat at [-]:[-] in the evening and start studying, bathing, organizing personal belongings, contacting family members, etc. at [-]:[-]; rest at [-]:[-] in the middle of the night.After time, there is no food to eat.

Fourth, there is a shortage of water. The total amount of drinking water, bathing, etc. per person is only 0.5 cubic meters per day.It should be said that it is enough; if it is still not enough, please pay 1 yuan per cubic meter.

In the end, you have two days to get used to it; after two days, whatever you're doing is full-time work.Otherwise, they will be sent back to Earth.And it will cause you to lose the opportunity to enter the core level of the company.

The future is in your hands, so work hard on your own.All the rules are here, one copy per person; keep this booklet clean and complete, and return it when you leave.Each person who is damaged will be compensated 1 yuan! "

"So picky..." Liu Kaixing muttered in a low voice.

"Wow, little guy, you don't know the price of firewood, rice, oil and salt. Let me tell you, this booklet in your hand was sent from the earth to the moon, and now it is worth as much as 8000 yuan! It contains general space survival knowledge , self-rescue methods, precautions, job requirements, etc. If you want to survive in space, you’d better memorize the content inside, and you can’t miss the punctuation marks. This is for your own good!”

"Oh row..."

"Of course, you don't have to worry. The company has always given clear rewards and punishments; if you do well, you will definitely be rewarded beyond imagination. In this regard, the company's performance is absolutely the best in the world." Feng Haitao said later , already a little flustered...

On December 2051, 12, Liu Kaixing began to lead his team to work.The location it chose was about five kilometers away from the forward base of the Guanghan Palace.This is taking into account the future expansion of the Guanghan Palace Advance Base, etc.In particular, there is a relatively solid rocky ground here, which is conducive to the construction and expansion of the projectile base in the later stage.

"Start!" Professional things are done by professionals!Liu Kaixing is actually a high-end soy sauce pot—at least for now, young man, if possible, he still wants to be a little lazy.The specific measurements and calculations are still these newly recruited experts.Of course, don't underestimate these middle school students in the master company; although they are inexperienced, some whimsical ideas, some routine calculations, etc., are no longer difficult for them.

"I think there is something wrong. I always feel that we overlooked a problem when we were calculating. But I can't remember it for a while!" At the last moment, Liu Kaixing was a little skeptical about the final result.

"Impossible! I calculated it based on the information provided by the company. Moreover, there is no problem with the on-site measurement." Old Professor Yang Hua was a little proud.Although the master company is good, they are still very confident in their professional field.

"Then build a test track first, and temporarily throw a kilogram of objects in the direction outside the solar system; be careful, don't hit any man-made objects in space."

"Okay!" Although he was somewhat restrained, Professor Yang Hua had to succumb to the "silver" authority of the master company, "According to calculations, the space factory will fly around the moon at a position of 200 kilometers, with a linear speed of 1.32 kilometers per second; Take 1.63 for calculation. Because there is no air resistance, we can calculate like this: According to the different masses of objects, we finally get the required power energy formula as: mx(242+9) degrees of electricity. m represents the mass of the object, in kilograms .

Among them, 242 degrees of electricity is the kinetic energy of 1.32 kilometers per second per kilogram of objects; 9 degrees of electricity is the potential energy of each kilogram of objects at a height of 200 kilometers on the lunar surface.

For the convenience of calculation, I have converted all the energy into electricity statistics, which is convenient for later calculation and management.

According to the formula, if it is only the projection of a one-kilogram object, according to the current energy density of the guide rail at a maximum of 1000 degrees per meter, we don't even use one-third of the power.

Alright, now we're plugging it in and getting ready to..."

Whoosh... The prepared standard one-kilogram steel weight flew out in an instant, twice as fast as a bullet, and violently rushed into space at an altitude of tens of kilometers.However, the good times didn't last long, and under the tracking of the satellite, it began to fall, and finally hit the surface of the moon.

……

There is no mistake in the calculation...Professor Yang Hua is frowning.

However, at this time, Liu Kaixing jumped up happily, "I remembered. We forgot to calculate the time for the gravitational force of the moon to do work. The oblique launch direction we adopted increased the time for the gravitational force of the moon to act on the weight. The longer the action time, the more force we need to overcome gravity!"

Well, our great professor has slipped up on this little point.

"Wait, there is another problem!" The female professor who was the first to be recruited was more careful, "We are only calculating the launch of a one-kilogram object. But to meet the needs of space construction, we must launch a ton, Objects with a mass of ten tons or even greater.

Let's roughly calculate.According to the current maximum energy density of the guide rail at 1000 degrees, the transmission of almost three kilograms of objects requires a one-meter guide rail.If an object with a weight of three tons is sent, a guide rail with a length of 1000 meters is required.

According to the calculation of the development speed of the master company, there may be guide rails with a length of 2000 meters or even greater in the future.

But if the guide rail is lengthened, we have to consider another force, the Lorentz force!Perhaps the length of a few meters cannot be expressed; but for a few kilometers, this force cannot be ignored. "

Uh... that's a problem!After a failure, everyone no longer took it for granted. After discussion, they were ready to overthrow the previous data and start over!After the failure, I discovered that science is not just a joke, so I can’t take it for granted!
It's just that no one saw it, Liu Kaixing was thinking all the time hidden behind the helmet; this was the first time Liu Kaixing really thought, not that kind of pretending to be deep.This time's failure, as well as the old professor's arrogant and sloppy attitude, gave Liu Kaixing some ideas of his own! (To be continued..)