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glass

Glass is a non-crystalline amorphous solid that is often transparent and has widespread practical, technological, and decorative usage in, for example, window panes, tableware, and optoelectronics. The most familiar, and historically the oldest, types of glass are "silicate glasses" based on the chemical compound silica (silicon dioxide, or quartz), the primary constituent of sand. The term glass, in popular usage, is often used to refer only to this type of material, which is familiar from use as window glass and in glass bottles. Of the many silica-based glasses that exist, ordinary glazing and container glass is formed from a specific type called soda-lime glass, composed of approximately 75% silicon dioxide (SiO2), sodium oxide (Na2O) from sodium carbonate (Na2CO3), calcium oxide (CaO), also called lime, and several minor additives.
Many applications of silicate glasses derive from their optical transparency, giving rise to their primary use as window panes. Glass will transmit, reflect and refract light; these qualities can be enhanced by cutting and polishing to make optical lenses, prisms, fine glassware, and optical fibers for high speed data transmission by light. Glass can be coloured by adding metallic salts, and can also be painted and printed with vitreous enamels. These qualities have led to the extensive use of glass in the manufacture of art objects and in particular, stained glass windows. Although brittle, silicate glass is extremely durable, and many examples of glass fragments exist from early glass-making cultures. Because glass can be formed or moulded into any shape, it has been traditionally used for vessels: bowls, vases, bottles, jars and drinking glasses. In its most solid forms it has also been used for paperweights, marbles, and beads. When extruded as glass fiber and matted as glass wool in a way to trap air, it becomes a thermal insulating material, and when these glass fibers are embedded into an organic polymer plastic, they are a key structural reinforcement part of the composite material fiberglass. Some objects historically were so commonly made of silicate glass that they are simply called by the name of the material, such as drinking glasses and eyeglasses.
Scientifically, the term "glass" is often defined in a broader sense, encompassing every solid that possesses a non-crystalline (that is, amorphous) structure at the atomic scale and that exhibits a glass transition when heated towards the liquid state. Porcelains and many polymer thermoplastics familiar from everyday use are glasses. These sorts of glasses can be made of quite different kinds of materials than silica: metallic alloys, ionic melts, aqueous solutions, molecular liquids, and polymers. For many applications, like glass bottles or eyewear, polymer glasses (acrylic glass, polycarbonate or polyethylene terephthalate) are a lighter alternative than traditional glass.

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  1. ddave

    Water pipe Recycler or Tornado Vortex Preferred for Desktop Vaporizer?

    Considering a water piece for inclusion in the mod kits. I own a sweet recycler and can get a good deal on them. I can hit it as hard as I can, and never a drop of water up the mouthpiece. Hits are amazingly smooth. But, also have seen and am interested in a Tornado Vortex piece as well. I've...
  2. pxl_jockey

    Tips How Do You Clean Your Glass?

    @momofthegoons I have searched high and low, but mostly high, for your “simple green setup” recipe/formula/protocol/tutorial and I cannot find it. I’ve scoured the Glass section to no avail. I’m at my wits end and about to go vape multiple vapcaps just to cope! I know what Simple Green is &...
  3. BD9

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  4. Philreal187

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    I was doing a fall clean out and wanted to offer some vapes and accessories to the community. I ask that if you can cover shipping that would be a huge help! I would also cover shipping to you if you got any vapcap accessories such as screens or o-rings for trade..! *alternate is spoken...
  5. Ed's TnT Woodscents through Texas Tubes

    Ed's TnT Woodscents through Texas Tubes

  6. Custom work

    Custom work

    Some love from Scratched Glassworks...
  7. SlowDrawMcGraw

    Glass Glass Function Thread

    Leisure Glass Incycler
  8. momofthegoons

    Glass Glass adapters

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  9. momofthegoons

    Glass Where Do You Buy Your Glass?

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  10. A

    Safety Glass on Glass safety (glass dust)

    hello everybody, While using a Ti nail as a vapcap DIY glass adapter I noticed glass was scratching a little the 14mm Ti male adapter (black fine dust was stuck on glass female adapter) This is normal as gong are not polished (to help with grip?), and due to this each time you put your gong in...
  11. momofthegoons

    Tips Glass Repair

    About a month ago, I broke one of my favorite bubblers... the limited series Leviathan M&M Tech bubbler. I still get a little sick to my stomach thinking about it.... Fortunately, I was steered towards a glass repair guy on Instagram who did an amazing job. Hard to tell from the pic, but...
  12. fluffhead

    Misc. Your Current Lineup

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  13. t-dub

    Cranberry Extract

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  14. EveryDayAmnesiac

    Glass The Glass You Use

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  15. Wheezy

    Misc. MILK SHOT THREAD

    This is very much needed for our viewing pleasures. So without further ado, I'll get the party started.

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