Float glass produces sheet glass by floating molten glass on molten metal. Glassblowing creates bottles and containers using blow and blow or press and blow methods
Feldspar is a group of rock-forming aluminum tectosilicate minerals. Makes up about 60% of Earth's crust and 41% of continental crust. Name derives from German "Feldspat" meaning "field-flake"
Murano is a series of islands in Venetian Lagoon, 1.5 km north of Venice. Initially settled by Romans, later by Altinum and Oderzo people. Prospered as fishing port and salt producer until 11th century. Founded Monastery of St. Michael in 2nd millennium, later suppressed
Float glass is made by floating molten glass on molten tin, pioneered by Pilkington in 1950s. Process replaced traditional cylinder method used until 19th century. Henry Bessemer patented first automated glass manufacturing system in 1848
Sodium sulfate (Na2SO4) is a white, highly soluble inorganic compound. Decahydrate form (Glauber's salt) is produced at 6 million tonnes annually. Solubility increases tenfold between 0°C and 32.384°C. Forms unusual double salts with various metals
Silica sand is the primary ingredient, free of iron impurities for clear glass. Sodium carbonate reduces melting temperature to 1,500°C. Additional additives like calcium oxide and lead oxide enhance properties. Glass mixture contains up to 30% additives for durability