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  1. Nov 24, 2021 · Glass, both ancient and modern, is a material usually made of silicon dioxide, or silica, that is characterized by its disorderly atoms. In crystalline quartz, atoms are pinned to regularly...

  2. History & Culture. Explore 3500 years of glass and glassmaking from antiquity through present day. 35 Centuries of Glass Galleries. Science & Technology. Glass changes the world—see how in our award-winning, interactive science and technology galleries. Innovation galleries. Explore the Collections. Discover for Yourself. Make Your Own Glass.

  3. : a usually transparent or translucent material consisting typically of a mixture of silicates. b. : a material (such as obsidian) produced by fast cooling of magma. 2. a. : something made of glass: such as. (1) : tumbler. also : glassware. (2) : mirror. (3) : barometer. (4) : hourglass.

  4. Jul 14, 2019 · The glass you encounter most often is silicate glass, which consists mainly of silica or silicon dioxide, SiO 2. This is the type of glass you find in windows and drinking glasses. The crystalline form of this mineral is quartz. When the solid material is non-crystalline, it is a glass. You can make glass by melting silica-based sand.

  5. Feb 12, 2023 · by Chris Woodford. Last updated: February 12, 2023. Now you see it, now you don't. Glass is a bit of a riddle. It's hard enough to protect us, but it shatters with incredible ease. It's made from opaque sand, yet it's completely transparent.

  6. noun. us / ɡlæs / uk / ɡlɑːs / glass noun (SUBSTANCE) Add to word list. A1 [ U ] a hard, transparent material, used to make windows, bottles, and other objects: colored / broken glass. a glass jar / dish / ornament. pane of glass It's a huge window made from a single pane of glass. [ U ] objects made from glass when thought of as a group:

  7. What is Glass? Lyle Hill. / August 15, 2016. 2 Comments. 5 min read. Find it helpful? Share With. Glass is one of the most versatile – and most misunderstood – materials used in the world. Glass can be used for everything from eyeglasses to bottles, windows to the ‘glassphalt’ you find on the road.

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