Was glass already available in the Song Dynasty?

Glass was already available in the Song Dynasty.

From the Song Dynasty poet Yang Wanli's work, "The Childish Ice", "Knocking the jade chime through the forest, suddenly the sound of glass breaking on the ground", it can be seen that there was already glass at that time, which means: gently knocking the ice, making a sound through the forest, when the admirer is intoxicated by the sound of the sound through the forest, but suddenly heard the sound of ice falling to the ground, as if the glass was broken. The sound of the ice falling to the ground is suddenly heard, as if the glass had broken.

The history of glass-making in ancient China can be traced back to the Western Zhou Dynasty, but then people called it glaze. It wasn't until glass from Western countries was introduced to China that it was called glass.

Western glass is composed of the elements sodium and calcium, while the elements contained in Chinese glaze are lead and barium. The original material used to make glaze was obtained from the by-products of bronze casting, which was refined and processed and then made into glaze. Glaze color variety, the ancients also called it "five-color stone".

To the Han Dynasty, the production level of glaze has been quite mature. But the smelting technology is in the hands of the royal nobles, has been secret. Since it was hard for the people to get it, people at that time regarded the glaze as even more precious than jade.

About 1000 B.C., China made colorless glass. In the 12th century A.D., commercial glass appeared, and began to become an industrial material. 18th century, in order to adapt to the development of the telescope needs, the production of optical glass.

Since then, with the industrialization and scale of glass production, various uses and various properties of glass have been introduced. In modern times, glass has become an important material for daily life, production and science and technology.

Extended Information:

The history of the development of glass in China is well known. p>The history of glass development in China has been more than two thousand years, different periods of historical documents have different titles for it.

1. "Chyoling", which appeared in the Shangshu-Yugong of the Warring States period. Choulin originally meant beautiful jade, and the ancients borrowed it to call glass that resembled jade.

2, "glaze", glaze this name has been used until the Ming Dynasty, some areas are still in use. Nowadays, the word "glaze" is mostly used in the construction of glazed tiles and tiles on top of the glazed ornaments.

3, "medicine jade" as the name implies, that is, such as boiling medicine like burning out of the glass like jade.

4, "jade jade", according to the "yuan history - hundred officials" records, the yuan dynasty jade jade bureau, for the palace supervise the production of glassware institutions, so the jade jade bureau of glass is called jade jade.

5. "Jade in a jar", Ming Cao Zhao "Gegu Essentials" called the glass "Jade in a jar".

6, "material", Beijing in the Ming and Qing dynasties popular appellation. Probably because Beijing does not produce glass, you need to buy glass from abroad, and then processed into ware, so the glass is called "material", and the customary, still have this name.