Surface Tension & Viscosity (Theory)2009 +1

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1 Sunday, March 18, 2012 1 B.M.Sharma Academy of Physics The free surface of a liquid acts like a stretched membrane, that is, the surface of a liquid is in a state of tension as the surface of an inflated balloon. Surface Tension REAL LIQUIDS 2 Surface tension is also known as interfacial force, interfacial tension and surface density. Sunday, March 18, 2012 2 B.M.Sharma Academy of Physics It is the property possessed by liquid surfaces whereby they behave as if they are
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  1 Sunday, March 18,20121B.M.Sharma Academy of Physics  The free surface of a liquid actslike a stretched membrane, thatis, the surface of a liquid is in astate of tension as the surface of an inflated balloon. Surface Tension   REAL LIQUIDS  2   Surface tension is alsoknown as interfacial force,interfacial tension andsurface density. Sunday, March 18,20122B.M.Sharma Academy of Physics  It is the property possessedby liquid surfaces wherebythey behave as if they arecovered by a thin elasticmembrane in a state of tension. 3 Surface tension is due tointermolecular attraction.   Qualitative definition Sunday, March 18,20123B.M.Sharma Academy of Physics  If we draw a straight line on the freesurface of a liquid, this line experiences aforce perpendicular to it but along thesurface. 4 BFFA This force per unit length iscalled  surfacetension. Sunday, March 18,20124B.M.Sharma Academy of Physics
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