3 ms·
Looks like we need a bit more clarity on what they mean by "glass". If you look at glass in medieval glass windows it's heavily distorted by gravity (fatter at
by nmstoker 7y ago
Looks like we need a bit more clarity on what they mean by "glass".
If you look at glass in medieval glass windows it's heavily distorted by gravity (fatter at the bottom than the top) and that's after ~900 years, so presumably they're actually meaning something more robust than that!
- keiru 7y agoTurned out it was a mistaken belief. Basically, thickness invariance in medieval glass had to do with the manufacturing process, and the viscosity of glass is not observable in a human timeline. https://ceramics.org/ceramic-tech-today/glass-viscosity-calculations-definitively-debunk-the-myth-of-observable-flow-in-medieval-windows https://ceramics.org/ceramic-tech-today/glass-viscosity-calc...
- nmstoker 7y agoThat's great - I hadn't heard about that, thanks for putting me right.