Is Glass A Liquid?

Is Glass A Liquid?

You may have heard that glass is a liquid, and that it slowly, slowly flows, causing older windows to have thicker bases. But don't believe the myth! Those windows have their bigger bottoms simply due to the glass-making process of the time, which left some panes with non-uniform surfaces. (Also, many old glass items don't even exhibit this feature.) As an amorphous solid, glass has a structure that is more rigid and organized than that of a liquid, but less so than a pure solid like a crystal.

Share the knowledge!
07:02

from Veritasium

Key Facts In This Video

  • 1

    Although it looks like a solid, pitch is actually a extremely viscous liquid at room temperature. (0:27)

  • 2

    Glass is an amorphous solid—its molecules aren't arranged in a typical crystalline structure. (2:42)

  • 3

    We can see the shadow of the Earth's liquid outer core by measuring seismic waves from an earthquake on the other side of the world. (4:25)

See all

Chemistry

Science

Fire

Measurement

Get smarter every day! Like us on Facebook.
You'll get the most interesting and engaging topics in your feed, straight from our team of experts.