Rebirth of the God-level Xueba

Chapter 61 accuracy

It was a painful thing to build a laboratory in the 1980s. Those state-owned enterprises and factories that were irresponsible didn’t care what the containers they made were, and they didn’t care how many crimes the people who used them would suffer after they got these containers. .

If it is really a middle school laboratory, the teacher only needs to explain on the stage, “Please note, students, all the containers you use are inaccurate, and the conditions are limited.” This matter is over.

But when someone is doing research experiments, the trouble is big.

First of all, it is necessary to assume that all equipment and instruments are unreliable, and then measure it again by yourself, and pick out the occasionally accurate ones before they can be used in the experiment.

This feeling is like the legendary selection of sniper rifle bullets. The factory smashed a bunch of bullets, and the soldiers squatted there to pick them up one by one, compare them one by one, and then use them on the battlefield. Of course, compared to the longer Jiawu naval battle, they were stronger, but also stronger. limited.

Fortunately, when Yang Rui was a graduate student, he also encountered such bad things. His tutor is not well-known, and the funds are naturally not much. When purchasing equipment and instruments, they usually support domestically produced instruments. Although the domestically produced instruments in the 21st century are much stronger than those in the 1980s, the accuracy requirements of the academic world are also constantly increasing. In the end, the work of debugging the instrument can only be left to graduate students such as Yang Rui.

Yang Rui used the experiment for the students to check all the newly bought containers. The results were not correct for each other, and my heart was cold. Of course, the scales such as beakers can only show a general idea, but What’s wrong with the balance of the weights?

The state-run chemical equipment store also knew what was going on. When Yang Rui took the container back, the middle-aged woman sitting under the counter and putting on sweaters said without blinking, “You only need to change it and you have to pick it up. Pick it out from the storeroom, and you can’t buy anything on the counter…”

It’s probably because I have said it more often, and when this sentence is said, it still carries a special rhythm.

Yang Rui seemed to be hypnotized, and obediently sent the containers to the storeroom at the back of the store with a few students, and then removed the cardboard boxes on the iron shelf one by one, squatting down like a soldier picking bullets. On the ground, silent selection.

If it’s 30 years, you really don’t care about domestically produced things. You can buy foreign ones. But in 1982, let alone foreign-imported containers, it would be very difficult to change to a chemical equipment store. There was only one store in the Nanhu area. It is still a branch of Pingjiang. In other words, what is the quality of what you see here, and what is the quality of Pingjiang.

Really good things, there are some in Beijing, and where the best scientific research institutes in the country are concentrated, there are always some experiments that cannot be avoided.

But in the one-acre three-cent area of ​​Hedong Province, the big-name research institutes estimate that they have their own purchase channels, while the listed laboratories of Yixibao Middle School or Xibao Meat Union Factory can only buy things in ordinary stores. It is obviously impossible to require both precision and quality.

Yang Rui could only squat silently in the warehouse to choose.

The yellow headlight hung down from the ceiling more than five meters high. It was quite dim, and the width between the iron shelves was also narrow. Yang Rui squatted for a while and felt unbearable. He thought: Fortunately, he exercises every day. If his body is the same as before, I don’t want to do it in the next two days.

Yao Chi, who came to help, was a clever young man. He noticed that Yang Rui was changing feet frequently. He stretched his head and looked around and said, “Otherwise, let’s move things to the door and pick them. Open the door and move another. Chairs, people can relax, but they are a bit blocking their way.”

“Move to the door first.” Yang Rui thought about it, took out a bag of Big Wild Goose Pagoda from his pocket, and said to Yao Chi: “You go and give the outside masters a cigarette, just say that we pick a little bit more to occupy a space. ”

“Yeah.” Yao Chi was less than six feet tall, but he jumped three feet high, and he took a cigarette and went to the yard.

Although it is only a small chemical equipment store, it has more than 20 employees, and there are seven or eight people guarding the warehouse.

So many people naturally have no work to do. They come and go every day, pretending to be on duty. Yang Rui didn’t expect them to help, but he didn’t want them to hinder his choice.

After all, turning over so many boxes of things in the end has increased the workload of others. According to the style of state-owned enterprises, no matter how idle people do not do extra work for you, it is impossible to send out a pack of cigarettes.

Cao Baoming and another student named He Cheng in his bench press group helped Yang Rui move up and down.

Unlike Cao Baoming and Su Yi, He Cheng is a tall and thin boy who looks a little thin. When he started to practice bench press, he couldn’t even push the smallest barbell, so he put on the 15 kg bar. The clamp was hung up and started to push. Until now, I can finally push 35 kilograms, but he is not as brisk as Cao Baoming when he picks up a heavy cardboard box.

Yang Rui did his best to choose the container, and then took the boss’s energy to pick the reagent.

You can’t try the reagents on the spot, you can only choose a good brand. Fortunately, domestic research institutions also know how unreliable domestic products are. Therefore, many research institutes have made so-called refined reagents on top of analyzing pure reagents. The price will be more expensive and the purity error will be smaller.

Yang Rui picked up some of the things he could see, and couldn’t help thinking: “It’s no wonder that those who do research have to be academic authorities. If this is a national key project… No, as long as it is a provincial key project, everything must be used. Carefully selected, it is more useful than having money.”

“Okay, that’s all, I have to go to Pingjiang next time, but the road is a bit far and it’s not convenient to take the shuttle bus.” Yang Rui greeted Cao Baoming and asked him to help send the selected reagents to the counter to settle the account.

The salesperson was still busy typing sweaters, and seeing the first cardboard box sent by Yang Rui, it turned out to be a result of mental calculations, and said: “Eighty-five yuan, no change.”

After speaking, she bowed her head to do her own thing.

Yang Rui smiled without saying a word.

Immediately afterwards, there were two more “bangs”, and Cao Baoming and He Cheng also put the cardboard boxes on the counter.

Yao Chi walked more slowly, but he refused to admit defeat and hugged a big box. Inside was a mechanical analytical balance with a glass cover. It was extremely heavy and placed on the counter. It made a dull sound. sound.

The bear girl in the sweater looked up in surprise, recognized the box, and said, “You ordered this thing?”

“Yes. I paid a deposit of 500. This is a deposit bar.” Yang Rui took the receipt and showed it to the other party.

“Your unit is quite rich. Did you take the rest of the money?” The salesperson finally put down the sweater in his hand, stretched his waist, and then did a set of stretching exercises in front of Yang Rui before starting to turn it over. The little book in the drawer said: “I want to keep an account for this thing. Also, if you open the box to see if the accessories are all incomplete? Leave the counter, and find the manufacturer if it breaks. I won’t be responsible for the missing accessories.”

It was another circumstantial expression, and Yang Rui reluctantly took out the analytical balance.

This is a clock-like device with complicated components like clock gears. In order to ensure accuracy, all mechanical parts have strict specifications like clocks.

Its accuracy is one ten-thousandth of a gram, which is 0.1 milligram. It is an indispensable member of modern quantitative analysis. In almost all university laboratories, this guy is indispensable.

Of course, if you go to university after 2000, the mechanical analytical balance is just a tool to embarrass people. When it comes to doing experiments, students would rather wait in line to wait for an electronic analytical balance than to operate complicated ones. Mechanical analytical balance.

Yang Rui was naturally unwilling to operate this thing.

The same is weighing a thing, and the electronic analytical balance gives the result instantly, while the mechanical analytical balance has to constantly adjust the knobs, beams, levers, and cursors. If it is a substance, it is nothing, but most of the time, All they encountered were multiple mixtures.

Yang Rui learned a few classes of mechanical analytical balances when he was undergraduate, and he wanted to smash it at that time.

However, for quantitative analysis in the 1980s, only mechanical methods were available. When Yang Rui recruited experimental assistants, he made up his mind to throw all this work out.

“Little brother, which unit did you buy the balance for?” A middle-aged uncle watched Yang Rui pay for it, and finally couldn’t help but walked out of the shadows.

“West Castle Middle School.”

“All middle schools buy analytical balances? Which company does Xibao Middle School belong to?” In normal people’s thinking, rich middle schools are naturally corporate middle schools.

“It’s not a factory-run middle school.” Yang Rui shook his head, turned the subject off, and asked, “You are from a local research institute?”

The middle-aged uncle was a little surprised. He touched his sparse hair and asked, “How do you know?”

“In the chemical store, I wore a shirt again, not from the school, or from the research institute.” Yang Rui replied naturally.

“Yes, there are only 807 and 510 in Nanhu. There are no colleges and universities, so it can only be a research institute.” The middle-aged uncle explained it to himself, a taste of the bottom of his emotional intelligence.

Such people are the most in schools and research institutes, and only this kind of place can have their living space.

Yang Rui nodded habitually and said, “That’s how I guessed it.”

“I’ll just say… hey, are you going back?” The middle-aged uncle wanted to learn a little bit, but he didn’t expect that Yang Rui would not eat this set at all, and would leave with something in his arms, so he could only stop him.

Yang Rui said irritably, “What’s the matter with you?”

“A little bit.”

“You don’t say I can go.”

“It’s not a problem… I just saw that the analytical balance you bought is quite new, is it a new product from Shanghai, right?” In the last sentence, he asked the salesperson.

She was also middle-aged, the aunt was very busy, staring at the sweater without raising her eyes, and said, “You don’t come here every day? Why are you asking?”

The middle-aged uncle was suddenly very embarrassed, and he said happily, “I didn’t take it apart.”

“Just your eyes, you can see through the box.” The aunt’s words were sharp, and she was very resistant.

The middle-aged uncle bowed his head to admit defeat peeked at Yang Rui and said, “This brother, I’ll discuss something with you, what do you think.”

“Oh?”

“The mechanical balance in my laboratory was accidentally broken, but the funds for the first half of this year ran out. I collected some money myself, and it was not enough to buy a new one…it just so happened that your school bought one. , I just wondered, could you tell your principal, let me use it on your weekends.”

This person is really not welcome. Yang Rui sneered and said, “It’s useless for you to find me about this. You have to find the principal.”

“Yes.”

“Where is the 100-kilometer road from Xibao to Nanhu Lake, do you run once every weekend? Is it all right?”

“You have to run if you can, and if you don’t, you have to run.” The middle-aged uncle had a tragic face.

…You are reading, if any!

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