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 -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.