The Dan Perlman, a biophysicist at Brandeis University in Massachusetts, invented a bottle of wine does not drip. Surely you know the problem of the drops running down the bottle when you put wine in a glass.

For three years, by Dan Perlman studying the flow of liquid in the bottle neck. The solution is simple: simply add a groove or a kind of gutter neck. The glass cylinder is hydrophilic, attracts water like wine. Adding a 2 mm groove, prevent the properties of the glass and the wine no longer flows along the cylinder.