A better explanation<http://en.wikipedia.org/wiki/Glass#Glass_versus_a_supercooled_liquid>can be found in the wiki
On Tue, Jun 16, 2009 at 4:34 PM, Chuck Harris <[email protected]> wrote: > J. Forster wrote: > >> Interestingly, I recently had dinner with an archeology professor, >> interested in the Etruscan period. She had just discovered a flatish piece >> of glass i9n a dig, thousands of years old, and believes it was made >> essentially like rolling out dough on a slab while red hot. >> > > To me, it would seem that playing with a blob of molten glass in > a fire, and spreading it out, or rolling it would be a more natural > step in the progression of making glass windows than blowing > a bubble. > > I would strongly expect that the earliest windows would have been > made by rolling the molten glass flat like it was dough. > > Much later would have come the blowing of a cylinder, and flattening > it out. > > In any case, there is zero evidence that glass flows at room > temperature. If it did, and 180 years was all it took for a window > pane to become all wavy, and thicken at the bottom, all of those > 10,000 year old glass artifacts would be shaped like the chewing > gum blobs on a city sidewalk. > > -Chuck Harris > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > -- ---------------------------------------------------------------------------------------------------- "Je hoeft het niet met elkaar eens te zijn om naar elkaar te luisteren." Ook van Loesje ---------------------------------------------------------------------------------------------------- _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
