The two got off the carriage, and Duan Lun came with people over there.
"I've seen Yinshan Hou!"
Now other people in the Ministry of Industry respect Tang Ping very much.
"Everyone, wait a minute. I'm going to try to make something here first. If it's done well, and combined with the new products of our engineering department, it will definitely set off a craze in Chang'an."
"Yinshanhou, we are not in a hurry!"
"Yes, yes, if you don't mind, can we see what Yinshanhou does?"
Tang Ping can come up with an invention and produce it together with the Ministry of Industry. It is already generous. How can anyone have any objections?
So the group of people followed Tang Ping into their glass workshop. There were two soldiers guarding the place. After checking their identities, they were let in.
This can be said to be the most closely guarded workshop in the workshop area. After all, glass can be mass-produced, which is synonymous with huge profits in this era.
A steward sent by Wang Qingluan came directly to greet him.
"Miss, these are some of the better pieces of glass made in the workshop recently."
He carefully opened a row of boxes. Inside each box were pieces of glass, none of which were big. The small ones were about the size of a palm, while the large ones were no more than the size of a human face.
But even with such a large piece of glass, it still made the Ministry of Industry officials behind take a breath of cold air.
Think about the time when the Western Man prince could bring a glass marble to the Tang Dynasty to play zither. The shock brought by such a smooth plane mirror was definitely far greater than that of his glass marble at that time.
"Has the shed I asked you to build ready?"
"Yes, everything is arranged!"
"Then let's go there!"
What Tang Ping wants to do today is to make a mirror, but in this era, it is not practical to use silver nitrate because he doesn't know how to make it.
Even after searching on Baidu, I couldn’t find out how to make silver nitrate in this era.
So the next best thing is to use older methods instead.
They use tin and mercury to make silver mirrors.
These two things have been here for a long time. Tin can be said to be the earliest metal used in our country. The bronzes of the Yin and Shang Dynasties already used tin.
Mercury, also known as mercury, is a little later, but it has a history of many years.
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Doesn’t the legendary Mausoleum of Qin Shihuang say that he used mercury as the river in the mausoleum?
It is also relatively simple to make a silver mirror in this way. Just lay tinfoil on one side of the glass, then pour in mercury. After the mercury reacts with the tinfoil, pour away the excess, and you will have a silver mirror. Then just paint on it. Just a thick layer of paint to insulate the silver surface inside.
The only flaw with this approach is that tin contains a large amount of lead, and mercury is also highly toxic.
So be careful about the toxicity when making it.
For this reason, Tang Ping asked Wang Qingluan to arrange for someone to build a shed behind the glass workshop in advance. The shed was ventilated on all sides to prevent volatilized mercury from harming the human body in a closed space.
Moreover, Tang Ping also asked people to make completely airtight protective clothing and protective hats specially made of sheepskin, which tightly wrapped the whole person.
In addition, the ladle for pouring mercury has a long handle that is almost one meter long, which can minimize the hazard.
Seeing how solemn Tang Ping was, the others also stepped back from afar.
Tang Ping carefully raised the ladle filled with mercury and slowly poured the mercury onto the tin foil.
Soon the mercury dissolves the tin attached to the glass, forming an alloy called tin amalgam on the glass.
This alloy can stick firmly to the surface of the glass to form a mirror surface.
Collect the excess mercury back and seal it tightly.
At this time, the tin amalgam on the glass no longer had much volatile toxicity. Tang Ping took the red paint prepared by the steward and painted a thick layer on it.
In order to make the paint dry quickly, I took another torch and used it to bake the paint at that temperature from a little distance.
At this point, the mirror is considered complete.
But as for the specific effect, we still have to turn it over and see the finished product.
People from the Ministry of Industry all gathered around, curious about what kind of thing Tang Ping would come up with after working on it so seriously for a long time.
Tang Ping breathed a sigh of relief in his hand, then carefully picked up the mirror and faced it to the Ministry of Works officials who were watching the excitement.
"hiss!"
"Wow!"
"this!"
Amazing, in addition to amazement, amazement.
Everyone is looking at the figure in the mirror. Many people here are doing it for the first time.
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See yourself clearly.
Even Wang Qingluan, who had used the mirror in Tangping convenience store, also felt it was magical.
He actually used two highly toxic metals to make such a beautiful mirror.
Tang Ping looked at everyone's expressions and knew that he had probably succeeded. He turned the mirror over and looked at his clear face in the mirror, and couldn't help but smile.
Of course he can buy this thing from Hyundai. The inventory in Yiwu Small Commodity Market can be sold throughout Chang'an.
But by doing that, you can make money, but it is of no use to the development of Datang.
This battle made him clearly see the weakness of personal power.
Even if he comes from a technologically advanced future, even if he has some black technology, it really doesn't have much effect when hundreds of thousands of troops confront each other.
So on the way back this time, he had thought that in order to prosper the Tang Dynasty in this era, he had to start from the bottom.
Only by developing agriculture, revitalizing the handicrafts, industry and commerce of this era, and making the people rich can the Tang Dynasty become prosperous and strong.
It was for this reason that when Li Shimin finally asked him to take a rotation at the Ministry of Industry, he did not refuse.
Otherwise, if he really doesn't want to, even Li Shimin won't force him.
Then a craftsman in the workshop took the piece of glass and embedded it in a copper frame that had been prepared long ago.
There was even a bracket behind the copper frame. In this way, the first Tang Dynasty glass mirror with a simple shape appeared.
"Yinshanhou, can you tell me how much does such a mirror cost? How much does it sell for?"
An official from the Ministry of Industry asked, that is, they are technical geeks. Officials with some emotional intelligence in other departments would probably not ask such a question.
Because this thing already involves some private things.
However, Tang Ping had no intention of keeping it secret, otherwise he wouldn't have brought them to see it.
He just wants these tech geeks to be exposed to something different, and maybe it will trigger some of their inspirations and make certain improvements to some of Datang's current technologies.
"In terms of cost, the yield rate is not high right now. Adding in the early research and development costs, it can be said that it costs about the same to make a mirror like this now."
money! "
(End of chapter)
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062 Free reading of the first mirror produced by Datang.
