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Leonardo is thought to have used the golden ratio, a geometric proportion regarded as the key to creating aesthetically pleasing art, when painting the Mona Lisa. The Dutch painter Mondrian used it in his abstract compositions, as did Salvador Dali in his masterpiece The Sacrament of the Last Supper.
Now a US academic believes he has discovered the reason why it pleases the eye. According to Adrian Bejan, professor of mechanical engineering at Duke University, in Durham, North Carolina, the human eye is capable of interpreting an image featuring the golden ratio faster than any other.