🚀 go-pugleaf

jeff@mama.minmet.uq.oz (Jeff Gates) writes:

: >how window glass was made when these buildings were built.  The
: >plates of glass were thicker near the bottom.  If you actually
: >work out the calculations for how long it would take for glass
: >to flow to this extent it turns out to be several centuries.

Longer than that - try many thousands of years.

: Fascinating!  I wonder if anyone else can support these calculations.
: 
: Now, since the subject of this article was "the Nature of Glass",
: I would like to see if I can start a bit of controversy on the net!
: 
: It is often said that
: 	" Glass is a liquid "
: or that
: 	" Glass is a supercooled liquid "
: 
: I have my own opinions on this, but first I want to see what comes out.

Just take a look at a piece of obsidian. Why is it not flat? More than
likely, it has been around for millions of years.

Bill