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On 23 Feb 2001, at 23:37, tdapper@phoenixdsl.com wrote: > Given enough time (and heat), glass will settle, that is, become thicker at > the bottom and thinner at the top. I was taught the same thing in grade school, but the truth is that old windowpane glass was pretty uneven, so when windows were made up they inserted the panes with the thick edge down. This minimized the visual distortion from pane to pane. The viscosity of glass really is too large to produce a measurable change in even a few thousand years. > Another way to look at it (he he) is that your windshield will become > thinner from all the pits in it. This is probably closer to the truth. ;-) - ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ------------------------------------------------------------------- Too much? Digest! mailto:type3-d-request@vwtype3.org Subj=subscribe