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History Of The Mirror
- Oct 11, 2017 -

Chinese bronze Mirrors

Chinese Society of slavery in the early period of the Bronze Age, people in the long metallurgy practice, has recognized the alloy composition, performance and use of the relationship between, and can manually control the copper, tin, lead ratio. The ancient book "Kao Ji" recorded "Gold has six Qi", that is, the six kinds of alloy ratio. The last of them together: "Gold, tin half, that the Kam flintlock qi." "is to make bronze mirrors used in proportion." "Kam" That is the mirror, high tin, is because the bronze mirror grinding out bright surface and silver-white ze, but also need to have casting performance to ensure the delicate pattern. Our ancestors had produced a fine "light mirror" more than 2000 years ago, it can reflect the beautiful pattern behind the bronze mirrors, thus causing the world's greatest prosperity. In order to solve the "light mirror" mystery, domestic and foreign scholars spent hundreds of years of research and exploration, until the recent discovery, this is because the mirror in the manufacturing process, there is relative to the back pattern of slightly unequal curvature, through reflection reflected in the back of the pattern. This fully demonstrates the great understanding of the ancient China's superb mirror-making technique and the light reflection characteristics.

Ancient European metal Mirror

In ancient Greece and Rome, a slightly protruding polished metal plate was used as a mirror, its not reflective side engraved with patterns, the earliest mirror is a hand mirror with handle, to the year 1th century appeared a large mirror can be shot, in the Middle Ages, hand mirror in Europe popular, usually silver or polished bronze mirror, in the Middle Ages, A small mirror, packed in exquisite ivory boxes or precious metal boxes, is a fashionable thing for women to carry, and glass mirrors with metal on the back appear at the turn of the century from 12 to 13, to the Renaissance, and Nuremberg and Venice have become famous mirror centers.

At the beginning of 14th century, Venetian people used foil and mercury on the back of the glass to make a mirror, which shone very clearly, 15th century Nuremberg made a convex lens, is the glass ball in the interior coating a layer of tin amalgam.

Modern Mirrors

The modern mirror was made by the 1835-year-old German chemist Liebig, which mixes the silver nitrate and the reducing agent to make silver nitrate silver and attached to the glass. The general use of reductant is sugar or potassium tartrate sodium tetrahydrate. 1929 British Pilton Brothers to the continuous silver plating, copper plating, paint, drying and other processes to improve the method.

As technology progresses, the cost of mirrors is reduced, and the appearance of various curved mirrors makes the use of mirrors increasingly extensive, with the addition of more uses than mapping. A parabolic mirror, such as a spherical rear-view mirror used in a car, used in a telescope to gather and to reflect the parallel light in a searchlight.