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Originally posted by fixer1967
do you have a second glass to try and repeat what happen?. I have has a glass explolde on me before but that was years ago before there was an internet to look up stuff on. Forget all about it until now.
Originally posted by CeeRZ
reply to post by spaceshrimp
Interesting... I would assume temperature at first, but like you said - no big changes.. and it does take a more drastic change to shatter glass.
I did find this... but it seems to be relating to windows...
Spontaneous glass breakage is a phenomenon by which toughened glass (or tempered) may spontaneously break without any apparent reason. The most common causes are:
Minor damage during installation such as nicked or chipped edges which later develop into larger breaks
Binding of the glass in the frame causing stresses to develop as the glass expands and contracts due to thermal changes or deflects due to wind
Internal defects within the glass such as nickel sulfide inclusion.
Thermal stresses in the glass
Inadequate glass thickness to resist wind load
Here is another idea:
In recent years Fully Tempered Glass has often been the subject of discussion even if unwarranted. The catalyst has been spontaneous breakages, whereby Fully Tempered glass – apparently without any external influence – shattered into pieces. On this current subject of spontaneous breakage, the possibilities to reduce them and also other possible reasons for breakage-
The type of breakage caused by Nickel sulphide inclusions in glass is in a nearer sense the spontaneous breakage. It is generally on thermally tempered or Fully Tempered glass that is affected. The glass really breaks „spontaneously“ – that means with any outside influence.
The cause of spontaneous breakage lies in the glass itself. It can be traced back to Nickel sulphide inclusions, which are very rare, about one in a glass area of 300 m2 at 8 mm thickness. The Nickel sulphide inclusions are so small that thay cannot be detected automatically and create a very serious threat to Fully Tempered glass.
Nickel sulphide (NiS) comes in two types: at high temperatures above 379°C it is stable. Under this, also at room temperature, it slowly changes its state. The change is even slower the lower the temperature is. Such phase changes are common in nature. The unusual with Nickel sulphide however, is that the inclusion expands. It subsequently pushes against the surrounding glass with increasing force. When it is also located in the tension zone of the Fully Tempered glass, i.e. in the inner „Half“ of the glass volume, after a certain time it creates a fissure inside the glass. The glass shatters „spontaneously“ with a loud crack and falls into thousands of small pieces.
I think that is your answer
In some parts of Leinster, she is referred to as the bean chaointe (keening woman) whose wail can be so piercing that it shatters glass
Originally posted by CeeRZ
reply to post by spaceshrimp
Yeah, usually generic science mumbling explains a lot. It's just whether you can understand it
If you saw bubbles though.. I'm betting that was probably it. Or a ghost. Could be that too. Banshee most likely.
In some parts of Leinster, she is referred to as the bean chaointe (keening woman) whose wail can be so piercing that it shatters glass
Originally posted by CeeRZ
reply to post by spaceshrimp
Oops, forgot to post that. Here she be: Link to Article
I didn't read the whole thing, so there might be an even better explanation in it.
Oh - and you were right, got the first part of Wikiedit on 8-8-2011 by CeeRZ because: (no reason given)