Glass

Stained glass in Paris, France

Glass is a non-crystalline, often transparent amorphous solid, that has widespread practical, technological, and decorative use in, for example, window panes, tableware, and optics. Glass is most often formed by rapid cooling of the molten form; some glasses such as volcanic glass are naturally occurring. The most familiar, and historically the oldest, types of manufactured glass are "silicate glasses" based on the chemical compound silica, the primary constituent of sand.

Due to its ease of formability into any shape, glass has been traditionally used for vessels, such as bowls, vases, bottles, jars and drinking glasses. In its most solid forms, it has also been used for paperweights and marbles. Glass can be coloured by adding metal salts or painted and printed as enamelled glass. The refractive, reflective and transmission properties of glass make glass suitable for manufacturing optical lenses, prisms, and optoelectronics materials.

Uses

See also: Spear

See also: Bow and arrow

Glass can be an improvided matierial to attach to a stick or pole in order to craft a spear.

Glass can also be used as a material for arrowheads.

Dependencies

Glass

Sand

Fire

See also

• Sand

External links

This article uses material from the Wikipedia article Glass, which is released under the Creative Commons Attribution-ShareAlike 3.0 Unported License (view authors).