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| Teaching Since: | May 2017 |
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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
A rigid sphere of radius a rests on a flat rigid surface, and a small amount of liquid surrounds the point of contact making a concave-planar lens whose diameter is small compared with a. The angle of contact of the liquid with each of the solid surfaces is zero, and the tension in the air-liquid surface is γ. Show that there is an adhesive force of magnitude 4πaγ acting on the sphere. (The fact that this adhesive force is independent of the volume of liquid is noteworthy.)
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