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At 10:03 AM 8/29/2003 -0700, BC, you wrote:
>Glasses are still liquids when called solids because they
>still flow and
there is not a demarcation in their properties.
There seems to be quite a wide acceptance of the idea that
solidified glass flows. This position is supported
by the assertion that medieval church glass is thicker at the foot.
The creep, if I can call it that, apparently takes place over very
much longer time-scales, so the concept is not so clear cut.