Glass
Glass
Glass can also be made using other types of glass (such as float, wired, or toughened), where they keep their original breaking attributes. Safety glass, whether used for construction or as car windshields, is made of two or more layers of glass with a plastic layer in between that may be PVB or EVA. That is done through application of heat and pressure by which the layers get bonded up, becoming a single whole item.
Glass is not electronically activated or motorised rather it is identified as coloured glass. To get coloured glass, the normal glass mix is prepared, to which a particular type of ion is added and it does not alter any other properties of the glass. For instance, iron oxide provides green and sulphur, the other component, provides blue for the shades.
Sunglasses or eyeglasses lens version that is coloured in a particular manner. They are created by coating a UV-blocking lens with different tints: blue, green, brown, yellow etc. Tinted lenses are fashionable accessories and serve to protect the eyes from dangerous UV radiation, and increase contrast.
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