Chapter 100:
To restore industrial civilization, even if it is only a partial industrial civilization, precision is one of the necessary foundations. Therefore, it is imperative to find a benchmark for unified weights and measures.
Regarding this aspect, there is no big problem in using the original scale units, but the commonly used rulers may not be able to achieve the accuracy that humans need now.
For example, the millimeter is already the smallest commonly used unit of length in life, but at this time, 1 millimeter is roughly the diameter of a human fist. Obviously, this accuracy is far from enough.
But further down the line, silk meters and kilo meters are units that are rarely used and few people know about them. Instead, they are smaller microns and are used more frequently in scientific research.
It's just that no matter which unit it is, if it's below millimeters, ordinary measuring tools are ineffective.
Chen Mu looked at the first built house, and his thoughts gradually diverged to this aspect.
"What are you thinking about?"
Tang Jing asked curiously when she saw that he didn't move for a long time.
Chen Mu expressed his thoughts again.
Tang Xueba smiled and said, "Thank you for knowing Simi and Humi."
"It's just two terms I heard somewhere. In fact, I don't understand anything." Chen Mu was always very humble in front of Tang Jing, even if When it comes to some content that he happens to understand, he won't show it, but mainly listens.
"100 meters = 10 meters = 1 millimeter, but these two units are basically no longer used." Tang Jing said.
"But I have heard that some old workers would use the unit of silk before."
"The silk often mentioned in machining is not silk meter. It is actually a millimeter, which is 0.01 mm. But it is also a non-standard term. I remember that time At a national-level seminar, someone once proposed to re-popularize the two units of silk and silk, but it is said that it was because they were afraid that the commonly used silk and silk would confuse people, so it was not passed." Chen Mu nodded
. : "Actually, I think these two units are very suitable for us now."
"Indeed, it's a pity that most people don't know it. If it's just for our own use, it's okay. It's just that the habit of weights and measures is not so easy to popularize. You see, many places in the United States are still using the anti-human British system." Tang Jing spread her hands and seemed to be joking.
Chen Mu nodded and said: "Actually, popularization is secondary. The main thing is that even if we use these units, what means do we have to measure? The rulers that can be found in schools can only measure millimeters at most. Vernier calipers are probably not It's easy to find."
"The accuracy of vernier calipers is generally 0.05 and 0.02 millimeters." Tang Jing thought for a while and continued: "Going further down, I remember that there is a spiral micrometer in the physics laboratory on the third floor of the teaching building. The accuracy can be as low as 0.01 mm. If it is smaller, you will need optical instruments, which are definitely not available in schools.
"But even if these can be obtained, it is difficult to carry and use them with our current size, and these tools are It needs to be well maintained, otherwise it won't work after a few uses. With our current conditions, let's forget it..." "
So, there is nothing we can do for the time being. "Chen Mu spread his hands.
"Actually, in the short term, even if we want to build some equipment, we only need relative accuracy, not such high absolute accuracy. In the future, maybe someone will awaken the power of measurement? "Tang Jing seemed to be very optimistic.
Chen Mu glanced at her and said to her that you are quite similar.
However, although he had some guesses, since Tang Jing did not take the initiative to say it, he would not ask, not to mention Tang Jing's condition. , even if it has awakened, it is by no means a simple measurement ability. It is almost catching up with super computers.
As for Tang Jing's extraordinaryness, Chen Mu was aware of it from the beginning, because it was obviously beyond the scope of erudition.
But If Tang Jing has really awakened some kind of brain-strengthening power, there seems to be no reason to hide it.
To say the least, if she really wants to hide it, she can help everyone in a more subtle way. I'm afraid Chen Mu won't notice it. There is something weird about her, but now, it is obvious that even Dong Junwei, He Ying and others have doubts. However,
in Chen Mu's eyes, Tang Jing seems to want others to doubt her, but she refuses to tell the truth herself. .
It feels like this girl has some important secret, and after she wrapped this secret in a layer of dispensable paper, she revealed it in front of everyone without any scruples, without explaining or escaping, as if she hoped to be seen through. But he is very confident that he will not be seen through.
This is why Chen Mu admires Tang Jing very much since the disaster, but is always a little alienated from her.
So sometimes Chen Mu will deliberately pretend to be stupid in front of her, The purpose is to let Tang Jing perform more, and maybe reveal some secrets.
Tang Jing seems to have realized this, and in turn is still cooperating with him.
This is what makes Chen Mu most speechless.
Of course.
He She still trusts Tang Jing.
Because with her mind, whether she is awakened or not, it is probably not difficult to harm people like herself.
Her weirdness is probably related to her supernatural powers.
But there is no way to know at the moment.
About measurement The problem can only come to an end.
In fact, this is also Chen Mu's insinuation of Tang Jing, but Tang Jing still does not respond.
...
After the first house is built, with the template, the rest is much simpler.
Four consecutive rectangular bungalows rise from the ground.
The bottom of the house and the ground are firmly bonded together, plus twenty-four buckles to ensure that it will not overturn when attacked. The thickness of the outer wall is nearly 1 centimeter. , even if a mouse does come, it will take a lot of effort to gnaw through it. The
biggest improvement over these houses is that Chen Mu dug a tunnel on the ground indoors for four people to hide, and Equipped with a flap.
The flap is made of stainless steel and is close to the ground. There is a door bolt on the inside. Once you hide in, even if a rhinoceros breaks in, it will hardly be harmed - unless it directly tramples the cement floor. .
Chen Mu had an authentic idea very early.
It was just that he lacked the ability at the beginning and did not put it into practice.
Since the end of the world, he has had too many things to do and has hardly had much rest, so that Dong Junwei, Tang Jing and others Sometimes people come up with good ideas but don't have the heart to put them forward immediately.
Of course.
The current tunnel can only hide people. To be precise, it is a cave. There is still a long way to go to open another exit. Change the
object The shape, but cannot affect the volume.
Therefore, for Chen Mu, digging a tunnel is basically the same as digging with a shovel.
He must constantly transport the excess cement blocks, which is still only for ordinary people with strength. For Chen Mu, it was the most troublesome thing. Therefore, he had to constantly alternate working with Wei Dalei, and his efficiency was naturally much lower.
(End of chapter)