Glass is made by fine powder of lime, soda and quartz sand. These material are first pounded and then mixed with another. The mixture is melted in a furnace at 1600 degree Celsius. The molten glass is then cooled to 1000 degree Celsius. It can be shaped into sheets, cakes, cubes or rolls. The used glass which we three into the wastebins, can also be collected and melted to manufacture fresh glass and glass objects.


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