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Originally Posted by A Thousand Pardons
Quote:
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Originally Posted by cjl
URBAN LEGEND ALERT
Glass actually isn't fluid, it is an amorphous solid, which is very different. It is not crystalline, but it is most definitely not liquid.
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but not that very different. It's just a matter of viscosity--glass has a lot higher viscosity than it would have if the legends about flowing windows were true. |
Well, yes, if you mean that it's viscosity is infinite. It doesn't flow. No matter how much time you give it, it still behaves like a solid (because it is one). There is a perfectly logical explanation for old windows having thicker bottoms - quality control. The glass was not made as perfectly as today - the thickness varied quite a bit. As a result, most pieces cut for windows had a thicker side. Now, if you were cutting windows of varying thickness, which way would you orient the thick side? The bottom, of course. It's that simple.