SURFACE TENSION

SURFACE TENSION Surface tension S =  Surface energy W =  Work done in blowing a liquid drop or soap bubble. In case of liquid drop W = S × 4 Splitting of bigger drop R3 = nr3 Increase in temperature  =  Decrease in temperature  =  Excess of pressure inside a liquid drop P =  Excess of pressure inside a soap bubble P =  Pressure difference across curved surfaces For convex surface P =  For concave surface P =  For cylindrical liquid surface P =  Bubble at depth h below the free surface of liquid of density d P = . Capillarity The height h through which a liquid will rise in a capillary is h = .