Chapter 607

Several palace attendants laboriously carried a copper mirror covered with red cloth and more than one person into the hall, which surprised everyone.

Cheng Yaojin was dumb and said for a long time, "Ziyou, this is the bronze mirror you are going to give to your majesty? Why is it so huge?"

Yangzhou Chaoji envoy even burst into laughter: "ha ha, it's the first time I've seen such a big copper mirror. Huxian Boguo is powerful. But I don't know how to polish such a big copper mirror?"

The key to making copper mirror is grinding the mirror.

It is not easy to make mirror grinding medicine from lead, tin and mercury, and grind the mirror carefully manually to the point where light can be seen.

This is also the reason why there will be no large-area copper mirrors.

Moreover, due to the production materials, the copper mirror will oxidize after being used for a period of time, and the mirror will gradually become dim and unable to illuminate the image. At this time, it is necessary to grind the mirror again.

"The mirror is bright, faint by dust and dirt, and its brightness begins to appear with the work of friction." it can be said to be grinding copper mirrors.

The bronze mirror offered by the waiter was not only square, but also too amazing in size. The size of a mirror with more than one person is no different from that of the dressing glasses of later generations.

The copper mirror covered with red cloth only looked at the general shape, which made people shake their heads and feel that Li forgetful worry was pure nonsense.

Li Qieyou didn't explain the people's questions. With a smile, he stepped forward and directly stretched out his hand to open the red cloth covered on the bronze mirror.

When the red cloth was pulled open and exposed behind the bronze mirror below, there was a sudden cold breath in the Tai Chi hall. The momentum made Li forget to worry about whether all the oxygen in the hall would be sucked up by Li Er and them.

The bright mirror and the clearly reflected image are like immobilization, which instantly immobilizes everyone in the hall.

All the people who saw the mirror stood motionless and frozen on the spot. They were lost and stared at the copper mirror without even blinking.

The hall suddenly became silent and strange to the extreme.

Behind Li Er, an internal eunuch standing with floating dust in his hand didn't know that the floating dust fell from his hand because he was too frightened.

The floating dust fell to the ground and made a crisp noise, which suddenly woke up the people.

Cheng Yaojin grabbed Li Qieyou's arm: "Zi, Zi you, tell me clearly, what is this? It's a treasure of the immortal family?"

Li Qieyou was caught by him. He was in great pain and quickly begged for mercy: "Uncle Cheng, let go, pain, pain! This is the bronze mirror my nephew gave to his majesty. Where is the treasure of the immortal family? Uncle Cheng, don't make trouble."

"It's not a treasure of the immortal family. Where can there be such a clear bronze mirror?" Cheng Yaojin said. He didn't look forward to coming up to the mirror and looking at his face carefully: "zhiniang thief, I saw myself so clearly for the first time."

Li Er strode over and pushed Cheng Yaojin in front of the bronze mirror aside. He stood in front of the bronze mirror and looked left and right.

In Li's opinion, Li Er at the moment is like a sister who goes shopping in future generations, stands in front of a mirror and appreciates her graceful posture, the same narcissism

Not only Li Er and Cheng Yaojin, but all the officials in the hall rushed over and stood behind Li Er. Even if they could only show some of their faces behind Li Er's figure in the mirror, they made all the hall leaders crazy.

It's no wonder Li Er and these big men are so rude. The bronze mirror presented by Li forgetful is too amazing.

There is almost no difference with the clarity of dressing glasses in later generations. Where have people seen such exaggerated copper mirrors?

The silver mirror clearly reflects everyone's face and even has insight into the details. Even the pores on each face can be seen clearly.

This bronze mirror was naturally made by Li forgetful with the methods of later generations.

When Li forgot to worry that he wanted to make a mirror for Li Er, his beautiful boss also sniffed at his whimsical ideas.

The reason is simple. There is no glass.

In the cognition of beauty bosses, glass is necessary to make a mirror that can be seen clearly in future generations.

But in fact, glass is not necessary to make mirrors.

In fact, the reason why mirrors are made of glass in future generations is mainly because the cost of using glass is the cheapest.

The principle of mirror imaging is very simple. The surface is smooth. Objects with the ability to reflect light refract light, using the reflection principle of light for imaging.

The glass itself does not have the ability to reflect light, and the glass only has light transmittance.

Therefore, whether the mirror is clear and imaged has nothing to do with the use of glass.

Using glass, first, because it is cheap, second, because of the flatness of the glass, it is easy to form a mirror by coating, and third, because the glass itself can protect the mirror.

The common mirror of later generations is to add a layer of reflective light coating on the back of the glass. In fact, the mirror we see is the light reflected by the coating, not the glass itself.

Therefore, according to the same principle, Li forgetful worry only needs to plating on the copper mirror, which has the same effect.

Early mirrors covered the glass with tin foil and then poured mercury. Mercury dissolves the foil to form a tin amalgam. The tin amalgam will adhere to the glass to form a mirror. Finally, behind the mirror, brush a layer of red paint to protect the mirror.

When Li Qieyou was a child, there was red paint on the back of the mirror at home, which was made in this way.

The same is true of the bronze mirror he dedicated to Li Er.

The difference is that he used silver instead of tin foil.

Mercury dissolves silver to form a silver amalgam. When the silver amalgam is plated on the surface of a flat copper mirror, a shiny silver mirror is formed.

The reason for using silver, of course, is that the amalgam is brighter and has better reflectivity. The reason why later generations use tin is simpler and cheaper

If you use silver to make mirrors, I'm afraid not many people can afford it.

But Li forgot to worry and was not short of money. Naturally, he cast such a silver mirror for Li Er.

Of course, this method was not invented by Li forgetful worry himself, but the wisdom of the Chinese ancestors.

It has been recorded in the book "Tiangong Kaiwu" of the Ming Dynasty that "mercury can digest gold and silver into mud, like plating". Its effect is no different from that of later mirrors.

Of course, amalgam is also toxic, but as long as it is not swallowed, it has no effect.

The mirror made in this way has a surprisingly good effect.

This unprecedented huge mirror directly subdued all the kings and ministers of the Tang Dynasty. Each one was stupid and stood in front of this huge mirror in a daze.

The Yangzhou Chaoji envoy has lost his ability to speak.

Stiff turned to look at the dim Yangzhou tribute mirror, and then look at the huge and visible mirror in front of him. This difference between clouds and mud made him really don't know how to express his mood at this time.

For a long time, Li Ercai seemed to return to his soul. His voice was low and he said, "Ziyou, you copper mirror is really an artifact! I like it very much!"

Cheng Yaojin and Fang Xuanling showed envy one by one. When they looked at Li forgetful, they were full of naked resentment.

They also want such a mirro