pouring tea into glass and it broke into two perfect peices!
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Zebh
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Dev Team
400 posts
posted on June 4th, 2011, 7:56 pm
If you didn't warm the glass beforehand and it wasn't designed for hot liquids, it is not that surprising.
Arash8472
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Topic Starter
740 posts
posted on June 4th, 2011, 9:20 pm
no it was room temperature and it's a normal glass  + as you can see in the pic it's really thick so it shouldn't have been able to break into 2 perfect pieces ... can it?
Nebula_Class_Ftw
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posted on June 4th, 2011, 10:12 pm
It can, it is possible that the glass was constructed by combining two halves (sounds like injection molding, but I don't think that is done for glass), leaving the weakest part a line bisecting the glass.
Another possibility is that the grooves leaving thinner sections of glass made a crack that split the bottom propagate to the top along them.
Haemoclysm
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70 posts
posted on June 4th, 2011, 10:22 pm
Its likely that you knocked it at some point, causing a microfracture. The smallest temperature change, maybe even the weight of the liquid was enough to stress the fracture just that little bit.
Shril
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Dev Team
1418 posts
posted on June 4th, 2011, 10:25 pm
This is happening quite often. When temperature differences between two phases are too huge, solid phased materials tend to burst starting at their weakest point. As this glass is quite thick it did not burst into many pieces but in 2 pieces. If the heat difference would have been greater this glass would not look as tidy as this one.

Once, my brother was filling hot tea into a cold thermo bottle causing a heavy implosion of the inner thermo glass parts. The whole family was sitting right next to it - all were shocked by that. Was so fricken loud!
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