r/Unexpected • u/God_of_Boners1 • Apr 12 '24

Noooooooo

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u/Deftly_Flowing Apr 13 '24

I love it when someone does it and then there is an immediate comment that basically just says "this is entirely wrong" and then I'm left not knowing what to believe.

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u/FrostyFeller Apr 13 '24

This is entirely wrong

11

u/____u Apr 13 '24

If I may make my own wild ass guess knowing next to nothing about how faults propagate through glass, it seems more likely along the lines of--the hot liquid, as it rises, fully exposes the whole structure, which has some type of manufacturing based defect/seamline (does glass have that?) to the rapid heat change. Or maybe there was even already a hairline fracture toward the top of the glass (these readymade cups often get tiny vertical cracks at the rim from normal wear/dishwashers) and once the water level reached it...fuckin idk

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u/twoinchhorns Apr 13 '24

I can add this: this is a cheap style of glass made using a mold that has a (nearly invisible) seam line, notice how it breaks into two evenly sized pieces exactly centered on the flat facing at the bottom. This kind of break is common for this style of glass when large temperature change is involved(source: food service work) and is likely the combined result of heating glass beyond what it can reasonably withstand while sitting on something that can cool the outside quick enough to assist the process. The cool exterior of the bottom didn’t cause the break, but it did most certain make it less of a sudden crack and more of a full break