I would think the dye must be added when the glass is at its molten state
2007-02-21 07:27:34
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answer #1
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answered by SonicSon 4
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The most common method is to mix different oxides into the batch to give it a uniform color. This is done to produce glass such as milk glass, cranberry, cobalt, amber, opaline, etc. There are basically three different types of colored glass: transparent, translucent and opaque. Transparent glass allows light to pass through without diffusion. Objects can be seen through it clearly. Translucent glass allows light to pass through in a diffused manner. Since only limited light passes through, objects appear unclear. Opaline glass falls into this category. Opaque glass is solid-colored glass that allows little or no light to pass through.
2007-02-21 07:30:40
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answer #2
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answered by Morgan 2
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There are numerous ways to add color in the manufacture of glass. The most common method is to mix different oxides into the batch to give it a uniform color. This is done to produce glass such as milk glass, cranberry, cobalt, amber, opaline, etc. There are basically three different types of colored glass: transparent, translucent and opaque. Transparent glass allows light to pass through without diffusion. Objects can be seen through it clearly. Translucent glass allows light to pass through in a diffused manner. Since only limited light passes through, objects appear unclear. Opaline glass falls into this category. Opaque glass is solid-colored glass that allows little or no light to pass through.
2007-02-21 07:22:12
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answer #3
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answered by I See You 4
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Early glass derived its color from impurities that were present when the glass was formed. For example, 'black bottle glass' was a dark brown or green glass, first produced in 17th Century England. This glass was dark due to the effects of the iron impurities in the sand used to make the glass and the sulfur from the smoke of the burning coal used to melt the glass.
In addition to natural impurities, glass is colored by purposely introducing minerals or purified metal salts (pigments). Examples of popular colored glasses include ruby glass (invented in 1679, using gold chloride) and uranium glass (invented in the 1830s, glass that glows in the dark, made using uranium oxide).
Sometimes it is necessary to remove unwanted color caused by impurities to make clear glass or to prepare it for coloring.
I hope this helps!!! =)
2007-02-21 08:06:21
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answer #4
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answered by ..... 4
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Clear glass bottles are clear because they're made of silica sand thats been melted.
Various metals are added with the liquid glass, then its formed.
2007-02-25 07:19:00
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answer #5
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answered by Anonymous
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green is usually copper pigment added to the sand and silicon mix during forging
2007-02-21 07:22:42
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answer #6
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answered by Anonymous
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beads of dye r put in when the glass is melted :D
2007-02-21 07:19:11
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answer #7
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answered by rose 3
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