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I am a engineer, but got a tad surprised the other day. I drank something and the glass was empty. No temperature shock anywhere. My cell phone was charging and lying next to it. I heard a funny noise coming form the glass and on closer inspection it was cracked.
Does anybody have any idea what could have caused this?
Houses4Rent
"We treat your investment as we treat our own" marc@houses4rent.co.zawww.houses4rent.co.za 083-3115551
Global Residential Property Investor / Specialized Letting Agent & Property Manager
They do all sorts of weird and wonderful things with glass during production and the stress within the glass can cause cracking when, as Adrian says, even a microscopic chip occurs or because of minute imperfections from manufacturing. They also 'rim stress' drinking glasses or even fully tempered to stop them being broken and used as a weapon by combative drunkards.
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