History of Glass

Difference (from prior major revision) (author diff)

Added: 18a19,22

Arguments against glass flow:
* if medieval glass has flowed perceptibly, then ancient Roman and Egyptian objects should have flowed proportionately more - but this is not observed.
* if glass flows at a rate that allows changes to be seen with the naked eye after centuries, then changes in optical telescope mirrors should be observable (by interferometry) in a matter of days - but this also not observed.

	Revision 10 . . December 13, 2001 6:33 pm by (logged).253.39.xxx [added anti-flow arguments]
	Revision 9 . . December 13, 2001 6:27 pm by (logged).253.39.xxx [added more anti-flow cites]
	Revision 8 . . December 13, 2001 6:19 pm by (logged).253.39.xxx [Mentioned 'glass flows' controversy]
	Revision 7 . . December 13, 2001 6:09 pm by (logged).37.81.xxx [flowing glass at room temperature is doubtful.]
	Revision 6 . . December 13, 2001 12:52 am by Hagedis
	Revision 5 . . December 13, 2001 12:50 am by Hagedis
	Revision 4 . . September 19, 2001 5:59 am by Rmhermen