Vitreous refers to a material in an amorphous, glassy state (in contrast to a crystalline state). An amorphous solid is a Solid in which there is no Long-range order of the positions of the Atoms (Solids in which there is long-range atomic order are Glass in the common sense refers to a Hard, Brittle, transparent Solid, such as that used for Windows many In Materials science, a crystal is a Solid in which the constituent Atoms Molecules or Ions are packed in a regularly ordered repeating In such a state, the constituent atoms do not exhibit the long-range order that is characteristic of crystals. History See also Atomic theory, Atomism The concept that matter is composed of discrete units and cannot be divided into arbitrarily tiny In Physics, long-range order characterizes physical Systems in which remote portions of the same sample exhibit correlated behavior In Materials science, a crystal is a Solid in which the constituent Atoms Molecules or Ions are packed in a regularly ordered repeating However, they still exhibit short-range order -- the separation of atoms and/or the lengths of covalent bonds are very close to their typical equilibrium distances. In a Chemical process, chemical equilibrium is the state in which the chemical activities or Concentrations of the reactants and products have no net change The creation of a vitreous material by supercooling or by addition of additives prior to cooling is called vitrification. Vitrification is a process of converting a material into a Glass -like Amorphous solid that is free from any Crystalline structure either by the quick removal

Under certain conditions, vitreous materials may begin to rearrange themselves into crystals. In Materials science, a crystal is a Solid in which the constituent Atoms Molecules or Ions are packed in a regularly ordered repeating This process is referred to as devitrification. Natural volcanic glass, obsidian, will de-vitrify or crystallize over extended periods of geologic time. Plate tectonics and hotspots Divergent plate boundaries At the Obsidian is a naturally occurring Glass formed as an extrusive Igneous rock. The geologic time scale is a chronologic schema (or idealized Model) relating Stratigraphy to time that is used by Geologists and other Devitrification can also occur in glass items that are regularly washed in dishwashers due to the chemicals involved in their detergents. A dishwasher is a mechanical device for cleaning dishes and eating utensils They can be found in Restaurants and private homes ^[1]

Other uses

• When applied to whiteware ceramics, vitreous means the material has an extremely low permeability to liquids, often but not always water, when determined by a specified test regime. The word ceramic is derived from the Greek word κεραμικός ( keramikos) The microstructure of whiteware ceramics frequently contain both amorphous and crystalline phases. The word ceramic is derived from the Greek word κεραμικός ( keramikos) An amorphous solid is a Solid in which there is no Long-range order of the positions of the Atoms (Solids in which there is long-range atomic order are
• A vitreous luster in mineralogy refers to a glassy luster or sheen of a mineral surface. Lustre (or luster) is a description of the way light interacts with the surface of a Crystal, rock, or Mineral. Mineralogy is an Earth Science focused around the Chemistry, Crystal structure, and physical (including optical) properties of Minerals The minerals quartz and fluorite exhibit a vitreous luster. Quartz (from German) is the most abundant Mineral in the Earth 's Continental crust (although Feldspar is more common in Fluorite (also called fluorspar) is a Mineral composed of Calcium fluoride, Ca[[Fluorine F2]]
• The vitreous humour (British spelling) or vitreous humor (U. S. spelling) is the clear gel that fills the space between the lens and the retina of the eyeball of humans and other vertebrates.

See also

• Amorphous
• Glass
• Vitrification

References

1. ^ Ancient glass (has a section mentioning devitrification)

An amorphous solid is a Solid in which there is no Long-range order of the positions of the Atoms (Solids in which there is long-range atomic order are Glass in the common sense refers to a Hard, Brittle, transparent Solid, such as that used for Windows many Vitrification is a process of converting a material into a Glass -like Amorphous solid that is free from any Crystalline structure either by the quick removal

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