The color of glass and color marks can be obtained by 1) the addition of dye ions , by 2) the nanometer-sized colloidal deposition (called striking spectacles like "golden ruby "or red" selenium ruby ​​"), 3) with colored inclusions (as in milk and glass glasses), 4 by light scattering (as in the glass separated by phase ), 5) by the dikchik layer (see dichroic glass), or 6) by colored coatings.
Video Glass coloring and color marking
Coloring ions
Tin oxides with antimony and arsenic oxide produce opaque white glass (milk glass), first used in Venice to produce imitation porcelain. Similarly, some smoked glasses may be based on dark inclusions, but with ionic dyeing it is also possible to produce dark colors (see above).
Maps Glass coloring and color marking
Color caused by scattering
Glass containing two or more phases with different refractive indexes indicates staining based on the Tyndall effect and described by the Mie theory, if the phase dimensions are similar to or greater than the wavelength of visible light. The scattered light is blue and purple as seen in the picture, while the transmitted light is yellow and red.
Dichroic Glass
Dichroic Glass has one or several coatings in the nanometer range (eg metals, metal oxides, or nitrides) that provide optical properties of glass dichroic. Also the blue appearance of some car windshield is caused by dichroism.
See also
- Crystalline field theory - physical explanation coloring
- Medieval stained glass colors
- Dark hydrogen
- Absorption of hydroxyl ions
- Transparent material
References
Source of the article : Wikipedia
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