They make an interesting case in this video that glass could actually be a liquid. Of course this goes against what we were taught!
At school, we’re taught that there are three basic states of matter: solid, liquid, and gas. But out in the real world, it’s often not as easy as you might think to work out which materials are in what state. Take glass, for example. It looks and feels solid, but on the atomic level, it kind of looks more like a liquid. So how do we classify it? Derek explains in the latest episode of Veritasium
Let’s see some diagrams and if they are right or wrong in the video on page 2
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Glass was thought to have been a liquid instead of a solid at one time, due to thinner upper halves and congruently thicker lower halves of old glass panes, but is actually attributed to manufacturing defects and installation. The thicker lower halves led people to beleive that glass flowed downward because it was a liquid and not completly a solid.
The particles still move, albeit slowly. Speed up time, and the wiggle is amplifide.