Glass

Glass is an baggy (non-crystalline) solid material. Glasses are about breakable and optically transparent.

The best accustomed blazon of glass, acclimated for centuries in windows and bubbler vessels, is soda-lime glass, composed of about 75% silica (SiO2) additional Na2O, CaO, and several accessory additives. Often, the appellation bottle is acclimated in a belted faculty to accredit to this specific use.

In science, however, the appellation bottle is usually authentic in a abundant added sense, including every solid that possesses a non-crystalline (i.e., amorphous) anatomy and that exhibits a bottle alteration back acrimonious appear the aqueous state. In this added sense, glasses can be fabricated of absolutely altered classes of materials: brownish alloys, ionic melts, aqueous solutions, atomic liquids, and polymers. For abounding applications (bottles, eyewear) polymer glasses (acrylic glass, polycarbonate, polyethylene terephthalate) are a lighter another to acceptable silica glasses.

Glass, as a substance, plays an capital role in science and industry. Its chemical, physical, and in accurate optical backdrop accomplish it acceptable for applications such as collapsed glass, alembic glass, eyes and optoelectronics material, class equipment, thermal insulator (glass wool), accretion abstracts (glass-reinforced plastic, bottle cilia able concrete), and bottle art (art glass, flat glass).