GLASS

>what is granular flow

this guys balls not using gloves

Mineralogist here
Glass is an amorphous solid. Glass is ANY amorphous solid. Obsidian for instance is volcanic glass.

You're not being clever OP.

Well it's not a myth they're thicker at the bottom, because they are. It's just that back in the day it was pretty hard to make a good level surface for the glass to get shaped on/by, so they would flow slightly towards one end because of gravity. The glaziers would then put the windows in with the thicker end on the bottom.

It's a glassy solid you morons

>some elements can change from solid to liquid
wow real smart

OK, let's move on to the more advanced questions: Are cats liquid?

>all these people citing the glass windows thing
come on, telescopes are much better counter examples

This thread is turning my brain liquid

Neither. Glass is amorphous solid at normal environment. That means it has liquid and solid in its structure. It actually flows veeeery slowly. Just look at those old colored window tiles from year 1500 or something.