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Inventor and wine lover Daniel Perlman, a biophysicist at Brandeis University in the US state of Massachusetts, has developed a wine bottle that does not drip when poured. According to a university press release, Perlman spent three years researching how liquids behave when they run over the edge of a bottle. The solution to the dripping problem is a two-millimetre wide and one-millimetre deep groove cut into the neck of the bottle just below the opening.

As Perlman discovered, wine bottles drip most when they are completely or almost full. Often, some liquid runs down the neck of the bottle when it is poured, because the bottle is held in a relatively upright position when it is full and the glass the bottle is made of attracts water. A drop of wine cannot flow through or bridge the groove directly under the rim of the bottle at the determined width and depth, so that it either flows into the wine glass with it or back into the bottle when it is poured.

Perlman holds a total of more than 100 patents in various scientific fields. According to media reports, he is now talking to bottle manufacturers about whether and how his invention can go into series production.

(CS / Press release / futurezone.at; Picture: 123RF / limpido)

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