It was introduced to China from the West during the Yongzheng period of the Qing Dynasty.
The world's first glass makers were the ancient Egyptians. The appearance and use of glass in human life for more than 4,000 years, from 4,000 years ago in Mesopotamia and Ancient Egypt, the remains of small glass beads have been unearthed.?
The twelfth century A.D., the emergence of commercial glass, and began to become an industrial material. 18th century, in order to adapt to the needs of the production of telescopes, the production of optical glass. 1874, Belgium was the first to produce flat glass.
1906, the United States produced flat glass cited on the machine, since then, with the industrialization of glass production and scale, a variety of uses and a variety of performance of the glass came out one after another. Modern, glass has become an important material for daily life, production and science and technology.
More than 3,000 years ago, a European Phoenician merchant ship, loaded with the crystalline mineral "natural soda", sailing in the Mediterranean coast of the Belorussian River. Due to the sea tide, the merchant ship ran aground, so the crew have boarded the beach. Some of the crew also carried a cauldron, carry firewood, and use a few pieces of "natural soda" as a cauldron support, cooking on the beach.
After the crew finished eating, the tide began to rise. They were about to pack up and board the ship to continue their voyage when suddenly someone shouted, "Come and see, everyone, there is something bright and shiny on the sand under the cauldron!
The crew took the shimmering things and brought them aboard to study them closely. They found that the shiny things had some quartz sand and melted natural soda stuck to them.
It turned out that the glittering things were natural soda, which they used as a holder for pots and pans when they were cooking, and under the action of the flames, they had a chemical reaction with the quartz sand on the sandy beach to produce a substance, which was the earliest glass. Later the Phoenicians made the Phoenicians rich by combining the quartz sand and natural soda and melting them in a special furnace to make glass balls.
Expanded Information:
The reason why the glass has been passed down:
1, good see-through, translucent performance ( 3mm, 5mm thick lens glass visible light transmission ratio of 87% and 84%, respectively).
The transmittance rate of near-infrared heat rays from sunlight is high, but the far-infrared long-wave heat rays generated by the refraction of visible light to the indoor walls and roofs of the ground and furniture, fabrics and reflections can be effectively blocked, so it can produce a significant "warm room effect". Net glass on the sun's ultraviolet transmittance is low;
2, acoustic insulation, a certain degree of thermal insulation performance;
3, tensile strength is much less than compressive strength, is a typical brittle material;
4, has a high degree of chemical stability, under normal circumstances, acid, alkali, salt, and chemical reagent box gas have a strong ability to resist, but long-term exposure to the action of the erosive medium Can also lead to deterioration and destruction, such as glass weathering and mold can lead to appearance damage and reduced light transmission properties;
Baidu Encyclopedia - Glass