Glass Wallpapers

玻璃是一种无定形的（非结晶的）固体物质

Which is often transparent and has widespread practical, technological, and decorative usage in things like window panes, tableware, and optoelectronics

The most familiar, and historically the oldest, types of glass are based on the chemical compound silica (silicon dioxide), the primary constituent of sand

The term glass, in popular usage, is often used to refer only to this type of material, which is familiar from use as window glass and in glass bottles

Of the many silica-based glasses that exist, ordinary glazing and container glass is formed from a specific type called soda-lime glass, composed of approximately 75% silicon dioxide (SiO2), sodium oxide (Na2O) from sodium carbonate (Na2CO3), calcium oxide, also called lime (CaO), and several minor additives

A very clear and durable quartz glass can be made from pure silica

The other compounds above are used to improve the temperature workability of the product