While pouring water slowly from a jug, a general observation is that a water layer usually flows along the side of the jug. Which property of water among the following is responsible for this phenomenon?
Surface tension
This everyday effect, sometimes called the teapot effect, occurs because of the cohesive and adhesive intermolecular forces summarised as surface tension. Surface tension keeps a thin film of water attached to the solid surface and pulls the falling stream inward toward the jug's side instead of letting it separate cleanly, so the water clings to and runs down the outer wall. Vapour pressure, compressibility and viscosity of water do not explain why the stream sticks to the surface, so surface tension is the responsible property.
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