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, also called lime (CaO), 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.
extremely - Fairy-good or bad?
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extremely

Added 11 days ago by stachna

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Colorful puzzle - colorful puzzle jigsaw
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Colorful puzzle

Added 3 weeks ago by andi

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composite - composition with apple wine and candles
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composite

Added 2 months ago by stachna

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Ozobots in education - The use of ozobots in school
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Ozobots in education

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Jigsaw puzzle - colorful jigsaw puzzle
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Jigsaw puzzle

Added 2 months ago by andi

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fjdjflkssl - klskx, s, XDL, dsllxnsxsklnvc; ass
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fjdjflkssl

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Jigsaw puzzle - colorful jigsaw puzzle
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Jigsaw puzzle

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Jigsaw puzzle - colorful jigsaw puzzle
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Jigsaw puzzle

Added 3 months ago by andi

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green devil - green devil
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green devil

Added 3 months ago by antonio

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Composition - colorful jigsaw puzzle
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Composition

Added 3 months ago by andi

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Once again La Sagrada Familia - Lorem ipsum dolor sit amet
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Once again La Sagrada Familia

Added 3 months ago by Ayla

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La Sagrada Familia - Lorem ipsum dolor sit amet
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La Sagrada Familia

Added 3 months ago by Ayla

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puzzle - cmkjdhsnfghdsasdfghjklkjhgfdsasdfghjkjhgfdsasdf
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puzzle

Added 4 months ago by jio

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I do not know - for children
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I do not know

Added 4 months ago by Lea

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Colorful puzzle - colorful jigsaw puzzle
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Colorful puzzle

Added 4 months ago by andi

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birthday - location of the gift
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birthday

Added 4 months ago by Hania

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Colorful puzzle - colorful jigsaw puzzle
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Colorful puzzle

Added 4 months ago by andi

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WHITE - sbsdfbvadf
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WHITE

Added 4 months ago by gvzsdfvzsdfasd

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Colorful puzzle - colorful jigsaw puzzle
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Colorful puzzle

Added year ago by andi

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raili book - i all have 16 pieces of puzzle and it's square
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raili book

Added year ago by llll

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reil book - in all it has 16 pieces and is square
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reil book

Added year ago by llll

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SCRITTAJPG - Motivational phrase don Fabio Rosini
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SCRITTAJPG

Added year ago by abc

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Jigsaw puzzle - colorful puzzle jigsaw
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Jigsaw puzzle

Added year ago by andi

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Blue glass mosaic - Blue glass mosaic
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Blue glass mosaic

Added year ago by Karola

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New Year's eve - Sylvester through the eyes of Paweł.
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New Year's eve

Added year ago by Paweł

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alkochole - wine, cheese and grapes
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alkochole

Added year ago by stachna

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For the patient - colorful puzzle for the patient
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For the patient

Added year ago by andi

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Green glass mosaic - Green glass mosaic
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Green glass mosaic

Added year ago by Magda

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sylwestrowo - chilled champagne is waiting
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sylwestrowo

Added year ago by stachna

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sylwestrowo - two glasses of good champagne
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sylwestrowo

Added year ago by stachna

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