On Cylindrical Container Sections for a Capillary Free-Surface Experiment
نویسندگان
چکیده
Small changes in container shape or in contact angle can give rise to large shifts of liquid in a microgravity environment. These shifts can be used as a basis for accurate determination of contact angle. We describe container shapes, designed for a forthcoming USMG2 experiment, in the form of a circular cylinder with two diametrically opposed “canonical proboscis” protrusions. Computational studies indicate that these containers can be designed to have the desirable properties that sufficient liquid will participate in the shift to permit easy observation, but that the change will be abrupt enough to allow precise contact angle determination.
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APPLIED MATHEMATICS Correction for ‘‘On the behavior of a capillary surface in a wedge,’’ by Paul Concus and Robert Finn, which appeared in issue 2, June 1, 1969, of Proc Natl Acad Sci USA (63:292–299). Owing to a printer’s error, the initial sentence of the abstract appeared as ‘‘Estimates above and below are obtained for the height of the equilibrium-free surface of a liquid’’ rather than the...
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