Glass: a successful case study
Glass is an inorganic material that is obtained mainly from silica sand (SiO2, around 70%[1]), calcium carbonate (Ca2CO3, around 15%), limestone (CaCO3, approximately 10%) and other additives, by melting at about 1,500 ºC (2,732 ºF). According to different sources, glass was first manufactured around the year 3500 a.C. in Egypt other sources indicate its origin …