Tell us about the origin of mirrors? Please, 3Q

Legend has it that Nuwa collected a kind of obsidian from the sky, which was polished to become a stone mirror, which is the ancestor of the mirror. From the stone mirror to the second generation of metal mirrors, it lasted more than 3,000 years. In December 1956, 13 ancient Chinese bronze mirrors were found in an ancient tomb in Okayama City in central Honshu, Japan, estimated to be more than 1,800 years old.

These ancient mirrors are round and patterned, and they are all made of bronze. It can be inferred that during the Sui and Tang dynasties, there were already metal mirrors in China, and there were historical books, and Tang Taizong praised Wei Zhengyu, which means that the bronze mirror can be dressed properly, and Wei Zheng can be correct in words and deeds. The existence of metal mirrors at that time is also testified.

In addition, according to the latest excavation of 13 Han Dynasty tombs in Yanqing County, Beijing in 2002, there are many bronze mirrors in the tombs, and the bronze mirrors are also engraved with the inscription "to the three dukes". It shows that there were metal mirrors in the Han Dynasty 2,000 years ago. In ancient times, in addition to mirrors made of bronze, there were silver mirrors made of silver and steel mirrors made of steel.

However, these metal mirrors become dark and rusty when exposed to moisture, and the effect becomes extremely poor. In order to avoid this, people prevent their surfaces from coming into contact with air and moisture, and people use glass as a raw material, which solves this drawback. There are two methods of surface processing for glass to form a reflective imaging surface: electroless silver plating and vacuum evaporation, and the most commonly used is electroless silver plating.

This method is to dissolve silver nitrate in water, add ammonia and sodium hydroxide solution and dilute it into silver hydroxide ammonia double salt to make silver plating solution. Invert sugar or formaldehyde, potassium sodium tartrate solution as the reducing solution. After the glass is cut, edging (grinding and polishing if necessary), and the surface is washed, it is sensitized with a dilute solution of stannous chloride, then washed, and then mixed with silver plating solution and reducing solution to immediately immerse the surface, and the mirror surface is washed after it is formed, and then it can be plated with copper and coated with protective paint.

The vacuum evaporation method is to wash the glass, put it in a vacuum evaporation device, and electrify the spiral tungsten wire, and the high temperature generated evaporates the aluminum alloy in the spiral into a gaseous state and deposits it on the surface of the glass to form a mirror. An electron gun can also be used instead of tungsten wire for heating. Vacuum evaporation also allows smooth metal surfaces to be processed into mirror surfaces.

If you analyze the poem from the perspective of life, according to the literal analysis, it is only through the mirror, reflecting a person's psychological state.

Although it is a mirror, the mirror can show different people, and in the eyes of different people, the meaning of the mirror is also different.

The mirror is like a real judge, it only gives you the most intuitive feeling, no matter whether you are beautiful or ugly, tall or short.

You can see yourself drunk in the mirror; You can also see your own beauty in the mirror.

Some people love it because they are beautiful; Some people hate it because it exposes its ugliness.

But there are also some people who just want to smash the mirror, because the mirror doesn't lie, it's too real and straightforward.

Mirror. Dynasties: Modern.

It's just a plane.

But it's unfathomable.

It loves the truth above all.

Never hide your shortcomings.

It is loyal to those who seek it.

Anyone can find out from it.

Or drunkenness.

Or the temples are like frost and snow.

Someone likes it.

Because I am beautiful.

Someone dodged it.

Because it's blunt.

There will even be people.

I can't wait to break it.

Mirrors were invented by the ancient Egyptians.

Mirrors were invented very early. The ancient Egyptians had already made bronze mirrors around 3000 BC. There were two types of bronze mirrors in ancient China: one was a concave mirror, which was used to focus the sun's rays to obtain fire; The other is a convex mirror, which is used to illuminate people.

In ancient times, cast mirrors were made of a copper-tin alloy, which was relatively brittle. If it is hit by an angular stone, it may shatter in half. We know that the stubble after the brittle object breaks is different, and there are as many different stubble as there are cracks.

There is simply no way for people to copy, that is, with modern technology, it is very difficult to copy it completely.

Introduction to mirrors

A mirror is an item with a smooth surface, originally polished smooth bronze as a mirror and has the ability to reflect light. There are two types of plane mirrors and curved mirrors, plane mirrors are often used by people to sort out their appearance, curved mirrors are divided into concave mirrors and convex mirrors, which are mainly used as makeup mirrors, furniture accessories, building decoration parts, optical instrument parts and solar cookers, reflective telescopes and searchlights, reflecting telescopes, car rearview mirrors and so on.

In science, mirrors are also often used in telescopes, lasers, industrial equipment and other instruments, with regular reflective properties of surface polished metal devices and metal coated glass or metal products, often inlaid with metal, plastic or wooden frames.

Legend has it that when Nuwa was mending the heavens, she collected a type of obsidian, which was polished into a stone mirror. The stone mirror is the ancestor of the mirror. It has taken more than 3,000 years from stone mirrors to metal mirrors.

As early as 2,000 years ago, in the Han Dynasty, there were metal mirrors in China. In ancient times, in addition to bronze mirrors, metal mirrors also included silver mirrors and steel mirrors.

About 400 years ago, glass mirrors appeared in Venice, Italy. At that time, only Venice mastered the technology of making glass mirrors. In 1666, a mirror factory appeared in Normandy, France.

At this point, the glass mirror manufacturing technology began to spread. Around the late Qing Dynasty, glass mirrors were introduced to China.

If you merge the two mirrors together, you can see your current face and many different faces, and the thirteenth face is your future face when you die If you look at the three mirrors at 2 o'clock in the morning, your face will appear on the front, and the right and left sides will show the person you hate and the person who hates you.

If you gaze at the edge of the mirror at 12 o'clock in the middle of the night on your birthday, you will see who you will be marrying in the future. If you look in the mirror at 12 o'clock in the middle of the night on Friday the 13th, you will see your own face in the mirror, and the thirteenth person will be the person you will marry. If you put the three mirrors together at 12 o'clock in the middle of the night, you can see your past, present, and future self It is said that if you look at a cracked mirror, you will be sucked into the mirror.

If the eyes of the thirteenth face seen in the merged mirror are closed, then the person will soon be in the west Do not look in the mirror at two o'clock in the middle of the night, otherwise you will see someone other than yourself.

I heard that looking in the mirror in the moonlight at night will bring the soul to you......(Grandma said it) also said that rats eat people's nails will become sperm, and it is not good to get under the sun-dried pants ......Alas

In ancient times, obsidian, gold, silver, crystal, copper, and bronze were used to make mirrors by grinding and polishing.

In 3000 B.C., bronze mirrors were already used for makeup in Egypt; In the first century A.D., there began to be large mirrors that could illuminate the whole body; In the Middle Ages, portable mirrors were prevalent in ivory or small boxes with combs; From the end of the 12th century to the beginning of the 13th century, glass mirrors with silver or iron plates as the backside appeared; During the Renaissance, Venice was the center of mirror-making, and the mirrors produced were renowned for their high quality.

In the 16th century, the cylindrical method was invented to make plate glass, and at the same time, the tin amalgamation method of attaching tin foil to the glass with mercury was invented, and the number of metal mirrors was gradually reduced.

In the second half of the 17th century, France invented the use of pouring method to make flat glass, and produced high-quality large glass mirrors.

Mirrors and their frames are increasingly becoming interior decoration.

At the end of the 18th century, large dressing mirrors were made and used on furniture.

Although tin amalgamation is harmful to humans, it continued to be used until the 19th century.

In 1835, the German chemist Lebiger invented the chemical silver plating method, which made the application of glass mirrors more popular.