5 ms·
Glass is weird. Improperly annealed glass can spontaneously break due to little more than atmospheric oxygen and water. Its breaking stress is a function of tim
by MengerSponge 5y ago
Glass is weird. Improperly annealed glass can spontaneously break due to little more than atmospheric oxygen and water. Its breaking stress is a function of time, but on a human timescale: seconds to days!
Check out the lower figure on page 9:
https://glassproperties.com/references/MechPropHandouts.pdf https://glassproperties.com/references/MechPropHandouts.pdf
- caf 5y agoA sliding glass door in the foyer of an office I worked in once just spontaneously turned itself into a pile of glass granules one day. I'm led to believe it's not a particularly infrequent occurrence.
- Arrath 5y agoI'll never get a glass top table after a friend's coffee table did the same. Yeah it was likely chipped or damaged or abused by years of coasters and glasses and controllers and books dropped on it, but one day we were minding our own business in the kitchen when we heard an unholy crash, come to find the tabletop in shards on the living room floor.
- castlecrasher2 5y agothere's a YouTube video of someone making uranium glass that had this exact issue come up. Very interesting to see in practice
- cyounkins 5y agoI think it was mostly during the cooling when the internal stresses are relaxing. NileRed - https://www.youtube.com/watch?v=RGw6fXprV9U https://www.youtube.com/watch?v=RGw6fXprV9U