Category: Glass

Glass is a non-crystalline, often transparent amorphous solid that is widely used in practical, technological, and decorative applications such as window panes, tableware, and optics.
Glass is most commonly formed by rapid cooling (quenching) of the molten state; however, some glasses, such as volcanic glass, occur naturally.
The most common and historically oldest types of manufactured glass are “silicate glasses,” which are based on the chemical compound silica (silicon dioxide, or quartz), which is the primary constituent of sand.
Soda-lime glass, which contains approximately 70% silica, accounts for approximately 90% of manufactured glass.
In common parlance, the term glass refers solely to this type of material, despite the fact that silica-free glasses frequently have desirable properties for applications in modern communications technology.
Some objects, such as drinking glasses and eyeglasses, are made of silicate-based glass so frequently that they are simply referred to by the material’s name.