Savannah: "Are church windows melting?" You might have heard this at museum visits: "The windows are slow-moving liquids that over centuries flowed to form thick-bottom windows." It turns out, this is a persistent myth. you see, glass is not a liquid. Shocking, I know. So if you have solid glass and you wanted to transform it to a liquid, you'd need to reach scorching temperatures to melt it. And to be honest, you'll most likely melt before the glass does.

But glass is something cooler: an amorphous solid, which is sort of like a mixture between a liquid - where the atoms are highly disordered - and a solid, where the atoms are neatly arranged. But this mix-match of properties is not why the church windows have heavy bottoms; it all comes down to manufacturing.

These windows were made centuries ago when glass techniques weren't perfect. So if you end up with a heavy side... you're just gonna put it on the bottom.

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