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Is Glass a Liquid?

9 years 2 months 3 weeks ago

YouTube: Stained glass is thicker at the bottom - so is it a liquid? Earth's mantle enables plate tectonics, so is it a liquid?

3 Comments

mxxcon

says...

So is lava a liquid?

bremnet says...

Glass is a fluid and a liquid (liquids are a subset of fluids). All window glasses will, given enough time, flow. The rate dependent deformation of the glass is described by its viscoelastic properties. Many stained glasses and all lead based glasses behave more viscously than elastically when compared to their modern counterparts, and thus appear to flow more, when the reality is that they just flow faster.

And lava is in fact a type of soap.