Unformatted text preview: volume, theorem, or energy minimization. Examples: Wicking; sap in trees rising to leaves (where it evaporates); startup of flow through a pinhole in the bottom of a bucket being filled. 11.5 Thickness of liquid puddles at equilibrium on a solid horizontal surface. (Solution by control volume method as well as energy method). Capillary rise or fall of liquid level adjacent to a vertical wall. 11.6 Adhesion or repulsion between partially wetted solid surfaces. Why wet plates stick together, why one can pick up grains of sand with a wetted finger, etc. 11.7 Attraction or repulsion of bodies touching or penetrating a liquid surface. The pond-skater and other examples from insect life. Read: Fay, pp 11-13, 53-55; Kundu Sections 1.6/1.7; 4.16/4.17 General Reference: A. W. Adamson, Physical Chemistry of Surfaces, Wiley Problems: Shapiro & Sonin, 2.2, 2.4, 2.5, 2.6, 2.7...
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- Fall '05
- Surface tension, Ain A. Sonin, Equilibrium capillary rise, wetted solid surfaces, spherical liquid drop, contact angle hysterisis