Commercial glasses may be divided into soda–lime–silica glasses and special glasses, most of the tonnage produced being of the former class. Such glasses are made from t… See more

Glasses of very different, and often much more expensive, compositions are made when special … See more

The agents used to colour glass are generally metallic oxides. The same oxide may produce different colours with different glass mixtures, and different oxides of th… See more

Many different useful and decorative articles have been made from glass over the centuries. The history of glass as a creative art has been determined partly by technical ad… See more