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Report on glass For my report I have chosen glass. In my report I will look into the history of glass, the chemical properties of glass, the optical properties, the uses of glass, how glass is made, different types of glass and the structural properties of glass. Firstly I will look at the history of glass. Dictionary definition of glass, Glass 1. Any of a large class of materials with highly variable mechanical and optical properties that solidify from the molten state without crystallization, that are typically based on silicon dioxide, boric oxide, aluminium oxide, or phosphorus pentoxide, that are generally transparent or translucent, and that are regarded physically as super cooled liquids rather than true solids. Natural glass 5000 BC Glass was first made by volcanoes, lightening strikes and meteors this is called obsidian. Obsidian is a black, shiny, translucent material. It is formed when volcanic molten lava comes into contact with water and...

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