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But it seems that Trouton's ratio is usually applied to something about viscosity.
Charles Matthews 09:25, 3 Dec 2004 (UTC)
the Trouton ratio, in the context of viscosity, is the ratio of Extensional Viscosity to Shear Viscosity, it is 3 for newtonian liquids, and more than 3 for non-newtonian liquids.