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The article could cite M. Goldstein. J. Chem. Phys., 51, 3728–3739 (1969) for the experimental definitions tau=100s and eta=10^19 Pa s.

I would add this to the list of "formal definitions", because the glass transition is a phenomenon that happens on a timescale. As I see it you cannot define the glass transition unless you introduce a timescale - But that is the view of a theoretical phycisist. Views may differ :-) 89.23.239.207 (talk) 07:38, 11 December 2024 (UTC)[reply]

The tables in Glass_transition#Polymers and Glass_transition#Silicates_and_other_covalent_network_glasses should probably be moved to Glass_transition#In_specific_materials. That would help readability. — Preceding unsigned comment added by 89.23.239.207 (talk) 08:44, 11 December 2024 (UTC)[reply]