Re: Missing term

[Vern Lindberg <vwlsps@RITVAX.ISC.RIT.EDU>]

Glass is not a liquid. Take a deep breath and repeat.

Read the material at http://www.ualberta.ca/~bderksen/florin.html

Thanks

Vern Lindberg

"Abstract

I compiled this short article to address the widespread urban legend
according to which glass is a liquid. It consists chiefly of a
selection of quotes from recent works by specialists in materials
science which state unambiguously that glasses are amorphous solids.
I also speculate that at the origin of the legend may have been a
misreading/mistranslation of an influential paper by Gustav Tamman.
Additionally, I appended to the article an extract from an ASTM
method of discriminating between a liquid and a solid. "

> At 10:03 AM 8/29/2003 -0700, BC,  you wrote:
> > ////
> > Regarding freezing, I think one should differentiate between the
> > increase in viscosity when glasses are cooled and other liquids
> > crystallize.  Glasses are still liquids when called solids because they
> > still flow and there is not a demarcation in their properties.
>
> ///
>
> > bc
>
>
> 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.
>
>
> Brian Whatcott    Altus OK    Eureka!