Hand rubbing nuclear fusion live in the wilderness

Chapter 113 Defines Standard Lengths
After the live broadcast, Won chose to return to reality this time. He first contacted the agency he had agreed to deal with the purchase of the laboratory.

After dealing with the laboratory affairs, after returning home, he found a standard meter ruler, accurately drew a black line on his trousers, and marked the specific and detailed length.

The most inseparable and basic thing for the manufacture of any precision tool is the standard and precise unit of length.

The more technology develops, the higher the precision required for the development of precision machinery manufacturing and metrology.

The previous survival in the wilderness and the manufacture of tool materials did not require too precise scales, so there was not much demand for this.

But he is now on the way to manufacture machine tools and generators, so standard and precise length units must be defined.

If the unit of length is not accurate, there will be errors in the manufactured things.

Human beings have defined the unit of length (meter) in several stages.

From the very beginning, the first meter is defined as 1/4th of the length of 1000/[-] of the earth's meridian.

To the back, one meter is defined as the length of the path that light travels in the vacuum in the time interval of 1/299792458 seconds.

As for how to define a standard one meter in the simulated space, Won has long thought about it.

There are many solutions. The shortest and best way is to measure the standard length directly on the real side, and then reproduce it after the past.

I just don't know if the system allows this kind of behavior.

But this is something worth trying, even if it consumes some points.

After marking the precise scale on the trousers, the Korean won entered the system space.

After he came in, he looked down, and the marking line that was engraved on the bottom of his trousers just now was gone.

Seeing the disappearing marking line, Han Yuan sighed. The system does not approve of this behavior, so he can only use other methods to define it.

Open the personal information panel, and there is his specific height in the height attribute item.

By replicating his height, he successfully obtained a 170cm bamboo strip.

Then, after multiple times of splitting and reorganizing, a one-meter-long bamboo piece was finally obtained.

The one meter produced in this way must have some deviation from the standard one meter, but it is enough for now.

The audience in the live broadcast room watched Han Yuan busy for a long time, and finally made a short piece of bamboo, which was a little puzzled.

It wasn't until I saw him start marking lines on the bamboo slices that I suddenly understood.

[It turned out to be making a ruler. 】

[Is this defining the length?one meter? 】

[Defining one meter length by measuring your own height, you are a little genius, anchor. 】

[True Climbing technology, even the unit length has to be re-made a little bit by yourself, it's scary. 】

[Come back, come back to the country, anchor, the motherland needs talents like you (dog head)]

[The one meter made here should not be standard, right? 】

Seeing the barrage, Han Yuan took the newly made ruler and smiled, and said, "It seems that everyone already knows what I'm doing."

"That's right, I'm using my height to define a meter."

"Although not so standard, the unit of length is essential."

"Missing a small error is a thousand miles. When manufacturing machine tools and various precision instruments behind it, once there are errors in the manufactured parts, problems will arise."

"In addition, in addition to defining the unit of length, there are also units of weight, temperature, volume, and pressure. I need to redefine these things slowly."

"We can get the rest slowly in the future. Now we can define the length unit and use it to manufacture machine tools."

"But before making the machine tool, I still have one more thing to do, and that is making paper!"

【papermaking?What is papermaking for? 】

[Another necessary knowledge for time travel! 】

[I know this. I major in papermaking. Although it is an unpopular major, it is still very fulfilling to watch the raw materials turn into paper under my own operation. 】

[Isn't that why the anchor's live broadcast is so attractive?Watch all natural raw materials turn into materials and tools bit by bit. 】

[I think Li Ziqi can be betrothed to the anchor, the two get together, they are a match made in heaven. 】

[Li Ziqi?The little fairy who can do everything but cut paper? (dog head)]

Seeing the ridicule of the barrage, Han Yuan also laughed, and he also watched the video of that issue.

"Papermaking is one of the four great inventions of ancient times. It has made great contributions to the spread of human culture and the development of science and technology, and has had a great impact on the entire world."

"I won't say much about the glorious history of papermaking, let's get straight to the point."

With an iron ax on hand, Won went into the forest and explained while looking for suitable materials.

"There are many raw materials for papermaking, basically plants can be used."

"However, in order to save time, I need to collect a kind of bark similar to the mulberry tree to make paper."

"Because using this kind of bark compared with making paper from bamboo and other trees can save the long step of placing the raw materials for fermentation, which can save me a long time."

After searching in the jungle for a while, Han Yuan successfully found the target he needed, a large-leaved tree of the genus Moraceae.

The fibers on the bark of the tree of the genus are very slender and tough, and are distributed in a network structure. Compared with other trees, it is more suitable for novices to use to make paper.

The iron ax cuts directly to the tree, and then tears off the bark. The bark is very white, and it looks like a natural rope when it is torn off.

He returned to the river with a large bundle of bark and threw it directly into the quicklime pit dug before to soak.

Although using the bark of the mulberry tree to make paper eliminates the fermentation process, the necessary soaking and washing before crushing is still inevitable.

Lime water is alkaline and can effectively weaken the fibers that make up the bark.

This is something in the primary biological application knowledge information, and in this way the process of immersion can be accelerated.

However, this time is at least two to three days or so.

This is impossible. Before manufacturing the machine tool, he needs to draw a standard drawing on paper.

A lathe, even if it is simple, has so many parts and accessories that it is easy to confuse and mess it up just by memorizing and thinking about it.

With complete drawings, this kind of thing doesn't happen.

Taking advantage of the two days of soaking the bark, Han Yuan began to collect wood again, burn charcoal, wooden barrels for cooking bark, paper curtains for pulping and other tools.

Three days passed quickly, and everything was ready for the papermaking preparations.

Han Yuan fished out the bark from the lime pit, cleaned it in the river water, and tore off the outer layer of brown bark, leaving only the inner layer of white fibers.

In this way, the paper produced will be whiter and more beautiful.

On the other side, a bonfire was also set up, and there was an iron pot on a stone chisel mixed with concrete and stones.

The iron pot is rebuilt from the iron sheet made a few days ago. The processed bark is put into the iron pot, and quicklime is added, and the wooden pot lid is covered and steamed for twelve hours.

(End of this chapter)