DW Tomorrow Today October 4, 2019 08:50:00
Doesn't deform it breaks. and for that reason it rarely survives a fall. or a big temperature difference between say ice cold water and a hot glass bottle while filling a cold glass with boiling water is likewise not a great idea. unlike metals glass is a poor conductor of heat. so if you pour cold water into a hot glass the inside surface of the glass contracts. but the outside remains warmer creating a strain inside the material small fracture. as for months spread causing the glass to break. glass can also be shattered by sound
Source: archive.org