Chinese bronze mirror

Slavery society with China in the early Bronze Age, people in the long-term of the bronze metallurgy practice, know the alloy composition, properties and USES, and the relationship between artificial control can copper, tin, and lead ratio. The exam work to record "ancient book of records" gold has six together ", namely the alloy six ratio. Among them the last together: "gold, tin and a half, is known as the Sui discrimination of qi." Made of bronze mirror is in proportion. "Jian" is lens, tin is higher, because the surface of the mirror grinded light and silvery white color, also need to have cast performance in order to ensure that the decorative pattern and fine. Our ancestors as early as 2000 years ago the beautifully made out of "through light", it can reflect a bronze mirror behind the beautiful design, thus causing the world's great and more. In order to solve the mystery of the "through light", the domestic and foreign scholars took hundreds of years to study, to modern found that, this is because the mirror in the manufacturing process and after on the back of the relative to design slightly the curvature of the range, by reflection on the back of the mirrors the pattern. This fully explain ancient Chinese excellent mirrors technology and light reflex features profound understanding.

Ancient European metal mirror

The ancient Greek, Roman times in Europe, also be to use a slightly protruding polished metal plate for lens, its not reflective side engraved with decorative pattern, the earliest the mirror is the handle with hand mirror, to the first century appeared as all the big shot can mirror, in the middle ages, hand mirror widely popular in Europe, usually for the silver or bronze mirror polished, in the middle ages, packed in elegant ivory box or precious metal box little mirror, become women carry modern product, the back of the metal coating glass mirror is 12 to 13 century appear, to the Renaissance, the nuremberg and Venice has become famous mirrors center. 14 th century, the venetians loosely with foil and mercury besmear is on glass mirrors on the back, as it is clear, the 15 th century made a burning nuremberg, is the glass ball in the internal of layer of the tu yi tin amalgam.

Modern mirror

Modern mirror is use the 1835 German chemist named libby case method of the invention of the manufacturing, nitric acid silver and the reductant-mixing, make the nitric acid silver exhalation silver, attached to the glass. General use of the reducing agent is sugar or four hydration tartaric acid potassium sodium. In 1929 the British peel's brother's continuous plating silver, copper, lacquer, drying process improvement for this method. With the development of technology, the mirror the cost reduction, various curved mirror has made the wide use of the mirror, with the appearance of shine upon outside except more USES. If the car with after a parabolic mirror on the sphere, used to gather in the telescope and used in the reflected in the parallel light parabolic mirror etc.
 

Reproduced, please indicate  http://www.metal-cardcase.com/