re:re: flat glass

Elliot,

I read what you're writing, but my EYES have SEEN the results of
glass "flow!?! And as a previous posted reply siad, mine is NOT a
singular experience!

More to the point of this list and the original idea, I would just
say that using 1/4 plate glass of such a large area will need
EXTENSIVE, ADJUSTABLE, support to be reliably flat. Any telescope
makers wish to respond...?

Hope this helps.

Ballendo

>The reference below repeats an old wives tale about glass flowing.
>The experiments that I'm familiar with have not demonstrated flowing
>of (common soda-lime)glass at room temperature, even under
>stress<snip>