[time-nuts] Lifetime of glass containers
cfharris at erols.com
Mon Jun 15 16:17:18 EDT 2009
That's just it, the glass wasn't flat to begin with.
Early glass was poured out into sheets, and was quite
non uniform in thickness.
Dave Carlson wrote:
> Not to charge in, but I've looked at ordinary window pane glass in very old
> buildings and you can actually see the rippling effect that occurred over
> time, showing the "flow" of the glass toward the lower edge of the pane. One
> presumes that the panes were relatively uniform when installed 120 years
> earlier. Sounds liquid to me.
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