The researchers ranked students on a widely used measure called the Torrance Test of Creativity, which involves such tasks as drawing an "interesting and exciting" picture from a curved shape on a sheet of paper, giving the picture a title, and then writing a story about it.

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The Austrian glassware company Riedel, for instance, makes a glass for dessert wine that is curved into a tulip shape in order to launch the wine away from the tip of the tongue and onto the middle and side of the tongue.

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Its revolutionary design , characterized by a stretched out, thin and slightly curved shape, makes it a fascinating device that will not go unnoticed.

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There was no visible wood grain in the print, and its shape indicated it was taken from a curved surface, not a flat one.

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