Photo: No drips: At last, a way to take the mess out of making a cuppaFrom The Telegraph:
Britain's tea lovers are raising a cup to scientists after they worked out how to stop a teapot dribbling.
A team of fluid dynamics experts have after exhaustive research concluded that the problem is a phenomenon known as the "hydro-capillary effect".
And the answer is to deploy a "superhydrophobic" material. In other words you could put butter down the spout.
They have deduced that at low pouring speeds tea starts to stick to the inside of the spout, causing the flow to momentarily stop and then start again – in other words to dribble.
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