Abstract
VISCOSITY (or consistency) results obtained with spheres falling through non-Newtonian liquids, unlike results with Newtonian liquids, appear to be difficult of interpretation mainly because the rate of fall is largely dependent on the depth of the sphere in the liquid. Facsimile tracings on a rotating drum (Fig. 1a) obtained with a ¾-in. diameter steel ball, carrying a fine rigid stem with pen attached, falling through a lime-base grease in a tall beaker approximately 19 cm. high and 9 cm. diameter, indicate that the rate of fall in the upper region of the grease can be many times that in the lower, and it is possible for the ball to remain suspended. Similar results were obtained with paints (100 gm. zinc-chromate in 100 c.c. linseed oil) using a 1-cm. diameter steel ball attached to a fine thread passing over a 'frictionless' pulley and counterpoised by a known weight (Fig. 1b).
Similar content being viewed by others
Article PDF
References
Proc. Amer. Soc. Test. Mat., 21, 1162 (1921).
Doklady, URSS., 49, 345 (1945).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
MARDLES, E. Movement of a Thin Plate in Non-Newtonian Liquids. Nature 158, 199 (1946). https://doi.org/10.1038/158199a0
Issue Date:
DOI: https://doi.org/10.1038/158199a0
This article is cited by
-
Yield Value of Bentonite Suspensions
Nature (1949)
Comments
By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.