veggiemanuk
Member
Well, this all depends on when you went to school and if you\'ve been updated on current theory.
Interesting to know.
Interesting to know.
Is Glass a Liquid or a Solid?
- Thread starter veggiemanuk
- Start date
Liquid.
Confused the blazes out of me at school. But then it was the 60\'s.
Confused the blazes out of me at school. But then it was the 60\'s.
fortunesfool
New member
It\'s just a really solid and slow liquid. I know it boggles the mind but glass actually does flow.
Roger Bunting
New member
Maybe it can exist as both a liquid and a solid.
Glass is indeed a solid (or a super called liquid)... but as nobody ever states at what temperature or atmospheric pressure in the question.
At sea level at between absolute zero and 2300C it\'s a solid.
Why don\'t people ever ask if water is really a solid or a liquid or a gas?
At sea level at between absolute zero and 2300C it\'s a solid.
Why don\'t people ever ask if water is really a solid or a liquid or a gas?
veggiemanuk
Member
Originally posted by Dragonsreach
Liquid.
Confused the blazes out of me at school. But then it was the 60\'s.
I too was taught that glass is a liquid but when I mentioned it to my work colleges a few years ago (as you do), all but one laughed and told me I was nutts. I spent the rest of the afternoon explaining what was tought to me in school.
It would seen that this has now changed (not sure when) and now kids are being told its a solid.
I still say its a liquid though.
And the myth about glass flowing is concerned with window panes being thicker at the bottom than at the top on old panes, but this is infact (if you beleive the sceptics) due to inferior manufacturing tequniques.
But if this is correct then its a HUGE coincedence that all badly manufactured windows are thicher at the bottom. You would think it would be a mix if this was indeed the case.
Highbulp Billy
New member
I personally believe that glass is in fact a very dense and well behaved gas so there
Well, i\'m not sure has its name meaning liquid but i\'m happy to run with it.
the point is that, like glass, it\'s liquid only in specific circumstances... and those are subject to change... for example if you boil water at the top of Mount Everest, it\'ll boil at just under 70C.
As for the window glass thing, I think the manufacturing problems of the glass referrs to how impure and/or crap the glass is.
As pure silica is glass, anything else isn\'t... so lead crystal isn\'t technically glass. We apply the term glass to any old thing as long as it\'s clear and hard and that is part of the problem. We don\'t use the term water for anything that\'s wet.
I strongly suspect that the sagging glass in the windows isn\'t technically glass.
That\'s being picky yes but that doesn\'t (I think at least) stop it from being the right answer.
Though this is todays understanding and things change all the time.
As I remember it the \"Urban Myth\" of glass sagging, is just that a myth.
The variation of glass thickness was caused by the methodology of poring glass onto a flat smooth surface from the centre, so at that point the glass would be markedly thicker.
Modern glass production uses flat roller/sheet production so an even glass thickness gets produced.
I vaugley remember some where watching (or reading) about the \"Glass Sagging\" being a mis-interpretation of the tendancy of the Lead strips in Stained Glass windows to lose their strength over the years. (but I could be talking utter Bollocks and glass just drips down. )
Ok A thought occurs to me;
If Glass is a liquid how can we get Toughened, Laminated or even Bulletproof glass?
lol
If Glass is a liquid how can we get Toughened, Laminated or even Bulletproof glass?
lol
BarstoolProphet
New member
And now, for my amazing exploding head trick!
***BOOM!***
***BOOM!***
I think solid -> liquid -> gas may be more of a sliding scale with some substances than others.
some solids go straight to gas (sublimation?) which also breaks the traditional thinking. We put labels on things because they seem \'right\', but there are always exceptions to the rule
some solids go straight to gas (sublimation?) which also breaks the traditional thinking. We put labels on things because they seem \'right\', but there are always exceptions to the rule
Thunderhawker
New member
Scientifically speaking glass is classified as a vitreous solid.
