It can be seen from the work "A Child Making Ice" by Yang Wanli, a poet in the Song Dynasty, that there was already glass at that time, which means that when the ice is tapped lightly, the sound made passes through the forest. When the viewer was fascinated by the noise through the forest, he suddenly heard the sound of ice falling to the ground, like the sound of broken glass.
The history of making glass in ancient China can be traced back to the Western Zhou Dynasty, but people called it coloured glaze at that time. It was not until the glass from western countries was introduced into China that the name of glass came into being.
Western glass is made up of sodium and calcium, while China's glass contains lead and barium. At first, the materials for making colored glasses were obtained from the by-products produced in the bronze casting process, and were refined to make colored glasses. Glass has many colors, and the ancients also called it "five-color stone".
By the Han Dynasty, the production level of coloured glaze was quite mature. However, the smelting technology is in the hands of the royal nobility and has been kept secret. Because it was difficult for people to get it, people at that time regarded stained glass as more precious than jade.
About 1000 BC, China made colorless glass. /kloc-in the 0/2 century, commercial glass appeared and began to become an industrial material. /kloc-in the 0/8th century, in order to meet the needs of developing telescopes, optical glass was manufactured.
Since then, with the industrialization and scale of glass production, glasses with various uses and properties have come out one after another. In modern times, glass has become an important material in daily life, production and science and technology.
Extended data:
The development history of glass in China has been more than two thousand years, and historical documents in different periods have different names for it.
1 and "Yulin" appeared in Shangshu Gong Yu in the Warring States Period. Yulin originally meant beautiful jade, and the ancients called it jade-like glass.
2. "Liuli", the name of Liuli, has been used until the Ming Dynasty and is still in use in some areas. Nowadays, the word "glazed tile" is mostly used for building glazed tiles and glazed ornaments on the top of tiles.
3. As the name implies, "medicinal jade" is a kind of jade-like glass that is fired like medicine.
4. "Jade", according to the "History of the Yuan Dynasty, Baiguan Zhi", the Jade Bureau was established in the Yuan Dynasty, which was the institution that the court supervised the production of glassware, so the glass made by the Jade Bureau was called jade.
5, "jar jade", Zhao's "Gegu Yaolun" called glass "jar jade".
6. "Liao" was a popular title in Beijing during the Ming and Qing Dynasties. Probably because Beijing does not produce glass, it needs to buy glass from other places and then process it into devices, so it is called "glass", which has become a habit along the way and is still called so now.