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Glass Formation And Material Analysis

Shanghai Rowell Industry Limited | Updated: Feb 24, 2017

The glass is initially made of volcanic acid rock. About 3700 BC, the ancient Egyptians have made glass ornaments and simple glassware, was only colored glass, about 1000 BC, China made a colorless glass. In the 12th century, there was a commercial glass and began to become industrial material. 18th century, in order to adapt to the development of telescopes need to produce optical glass. In 1873, Belgium first produced flat glass. In 1906, the United States made flat glass on the machine. Since then, with the glass production of industrial and large-scale, a variety of uses and various properties of the glass have come out. Modern, glass has become an important material in the field of daily life, production and science and technology.

The type of glass is usually divided into oxide glass and non-oxide glass according to the main ingredient. Non-oxide glass varieties and a small number, mainly sulfur glass and halide glass. Sulfur-based glass anion mostly sulfur, selenium, tellurium, etc., can be cut off short wavelength light through the yellow, red, and near, far infrared light, its low resistance, with switching and memory characteristics. Halide glass has a low refractive index, low dispersion, and is widely used as an optical glass.

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