Glass



Glass is a material used in construction since the 12th century which is why this material although not as resistant to the skeleton of a building has become an excellent material for lining walls and walls, The technique of decoration, however, remained the same, new color combinations were used, and indeed these combinations continued Into the era of blown glass.

In science, however, the term glass is defined in a much usually wider sense, Including that possesses a solid every non-crystalline structure and exhibits a glass transition that when heated towards the liquid state. In this wider sense, glasses can be made ​​of different classes of materials removed: metallic alloys, ionic melts, aqueous solutions, molecular liquids, and polymers. For many applications (bottles, eyewear) polymer glasses are a lighter alternative to traditional silica glasses.

media type="file" key="grabacion3.wma"