Rebirth 1982 Be the stubborn master

Chapter 345 Valuable Aluminum
Not long after, someone knocked on the door again.

Du Kang asked someone to open the door, and soon the nanny led him over with a strange expression.

Looking at the tattered clothes of the visitor, Du Kang wondered, "Who are you? What do you want from me?"

He talks and laughs with great Confucianism, but has no casual contacts. With his current status, whoever he knows is not a high-ranking person, either rich or powerful, how can he know such a person.

But I don't know where the other party heard about him, so he ran over to visit.

The reason I ask is just out of politeness.

"I'm from a shantytown. I wasn't at home yesterday. I have a treasure at home that I would like to ask you to take a look at."

"I'm not interested in helping you identify things, you should go back."

Du Kang's face immediately turned ugly, and he issued an order to evict the guest.

Just kidding, make this for me every day, how can there be so many treasures in the world, he is not interested in appraising tatters for people every day.

"But, this is the treasure I found with great difficulty, you must like it."

Du Kang snapped, "You'd better go back.

I was just kind enough to help you appraise for a day yesterday, but you came to me every day, I can't live well? "

The person who came did not expect him to turn his face suddenly, his face was a little ugly, but he refused to leave, and he was not willing to let go of this opportunity.

"Please help me to take a look, really, it's really a good thing."

Du Kang waved his hand and said, "Forget it, no matter what good things you have, you can't disturb my life, please go back, let's talk about it later."

"But this is really a treasure that I managed to get."

Du Kang waved his hand and asked the nanny to take him away quickly.

Immediately the nanny went over to push and push him, trying to pull him away.

The visitor would not be willing to give up this opportunity, he desperately broke away from the nanny, ran in front of him, knelt down on the ground, raised the thing in his hand and shouted, "Brother Du, please help me to take a look, this is really a good thing."

Du Kang looked over and saw that it was an aluminum-cased minute repeater pocket watch. He immediately waved his hand to stop the nanny and asked her to go out first, then picked up the watch to check.

The diameter of the watch is no more than five centimeters, and there is a pattern embossed on the case. On the pattern, there is a two-headed monster with a hideous and weird shape. Its aura looks fierce, but it reveals a sense of cartoonish humor.

Just above twelve o'clock is the crown of the pocket watch, which is where the pocket watch is wound.

Under the cover is the body dial of the pocket watch.

The entire dial of the fuselage is engraved with exquisite patterns, and in the middle is a blue galaxy pattern, which is made of enamel.

The twelve scales of Roman numerals, the hour, minute and second hands are also golden, and they are fixed at 20:[-] and [-] in the afternoon.

On the four o'clock scale, there is also a small circle, which is a unique timing function on this pocket watch.

There are also inscribed foreign characters on the back.

Looking at the line of text, Du Kang raised his eyebrows slightly, motioned for the other party to sit down, and took a magnifying glass to examine it carefully.

Seeing this scene, the visitor was immediately relieved, knowing that he had made the right bet. This tattered pocket watch that he did not know where to pick up was indeed a good thing.

The more I look at Du Kang, the more delighted I am. This pocket watch is indeed a treasure.

Things with aluminum shells sound worthless, after all, aluminum, who doesn't know.

This is the most common metal in life, even more common than iron.

For example, aluminum alloy doors and windows, aluminum pots, aluminum rice spoons, etc., it can be said that there are not too many.

But you're talking about the present, not the past.

Now the most common metal, aluminum was once the most expensive metal.

In 1825, the Danish Oster used potassium amalgam to reduce anhydrous aluminum chloride, and obtained a few milligrams of metallic aluminum for the first time. Since then, metallic aluminum has appeared in people's field of vision.

In the following period, aluminum was a treasure enjoyed by emperors and nobles.

French emperor Napoleon III used aluminum forks at banquets; Thai kings used aluminum watch chains.

It was exhibited with the crown jewels at the Paris Exposition in 1855, with a label stating "Silver from Clay".

As the discoverer of the periodic table of elements, Mendeleev also received vases and cups made of aluminum alloy presented by the London Chemical Society.

You must know that at Napoleon's banquet, other princes and nobles used tableware made of gold, and only Napoleon used tableware made of aluminum.

All this shows how high the status of aluminum was in the past.

Anyway, it is much more expensive than gold.

It is sought after by countless princes, ministers, high-ranking officials and nobles, and countless people are proud to get a set of tableware made of aluminum.

It wasn't until the end of the 19th century that scientists discovered the method of dissolving alumina in cryolite and electrolyzing it. This is extremely expensive, and aluminum, which is more precious than gold, began to plummet, and the price fell by more than 1000 times.

After decades of development, and with the unremitting efforts of people, this extremely expensive aluminum metal has just become the most common metal in the world, successfully pushing out iron.

As for why not so many people know this history.

At least not as famous as Marbles for Gold.

The reason is simple. Who were the ones who could afford aluminum?
Western aristocrats, big businessmen, well-known wealthy people.

As a result, he spent a lot of money to buy priceless tableware, of course he wanted to show off to his friends and let people know that he has such a good treasure.

The results of it?
IQ tax paid.

The treasure that was originally priceless has become worthless, and even ordinary people don't regard it as a good thing.

Under such circumstances, how could they have the nerve to show off to others.

That's being slapped in the face, it's a terrible pitfall, of course you can't tell it outside and let others know.

Mendeleev can be said to have witnessed this incident back then, witnessing with his own eyes that aluminum has gone from priceless to extremely cheap.

I really don't know how he feels about the vase presented by the London Chemical Society.

This is obviously in recognition of my great contribution to chemistry, just like a gold medal, it is a reward for my contribution.

But my baby is worthless.

If you are a gold medal, you can show it off, how much it is worth, and what kind of history it has.

In the face of a gold medal made of gold, it is more face-saving to say it.

But what if the original gold medal is replaced by an iron medal made of worthless iron?

Do you feel insulted?

Even if it was really a treasure at the beginning, it was a reward, but after the aluminum became worthless, would it feel strange to face such a vase, and I would be embarrassed to introduce it to others.

Nima, it's aluminum anyway, and it's the most common thing in life.

And this pocket watch is a pocket watch that a king paid a lot of money to make.

It was his favorite thing back then, and it was considered priceless at that time.

But now it has become an ordinary item in the market, and no one cares at all.

Among other things, if you go to buy a watch made of aluminum, let alone cause a sensation, people will only think that you have no money and have to buy this kind of watch.

(End of this chapter)