I thought the whole glass = liquid thing was pretty much an urban
legend, with the glass in old panes being thicker at the bottom
because the pane was cut from a disk that was thicker in the middle,
or something like that.

http://dwb.unl.edu/Teacher/NSF/C01/C01Links/www.ualberta.ca/~bderksen/florin.html



On 11/17/06, Tamas Rudnai <tamas.rudnai@gmail.com> wrote:
> Yes, afaik the reason why sometimes treated glass as fluid as it is that
> normally glass is not crystallised but completely amorph. We usually say a
> solid material is always built up by crystals, hence the category of fluid.
>
> Tamas
>
>
> On 11/17/06, David VanHorn <dvanhorn@microbrix.com> wrote:
> >
> > On 11/17/06, Ken Walker <ken.walker@manchester.ac.uk> wrote:
> > >
> > > It is, a little known fact.
> > >
> > > That's why you find very old glass in windows is thicker at the bottom
> > > than
> > > the top, particularly stained glass in churches
> >
> >
> > I saw that myth busted.
> > Apparently in the early days it wasn't easy to fabricate glass in a
> > uniform
> > thickness.
> > They installed it thick edge down.
> >
> >
> > http://dwb.unl.edu/Teacher/NSF/C01/C01Links/www.ualberta.ca/~bderksen/florin.html
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