Is Glass a Liquid?
2. Different Colors
Go to any church and you will likely see glass that is made of different colors (stained glass windows). You will also find different colored glass at home and the different colors can be useful in creating aesthetic appeal. These different colors are achieved by adding in other minerals with the sand and other ingredients before melting.
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If you want violet glass, for example, then adding in some nickel oxide will do the trick. The coloring of glass in this way does not affect its properties at all and it can be used in exactly the same way that plain, uncolored glass can be used.
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