The Golden Ratio

In this fascinating book, Mario Livio tells the tale of the number phi, or 1.6180339887. This curious mathematical relationship, widely known as the 'Golden Ratio,' was defined by Euclid more than two thousand years ago because of its crucial role in the construction of the pentagram, to which magical properties had been attributed. Since then it has appeared in the most astonishing variety of places - from mollusk shells, sunflower florets, and the crystals of some materials, to the shapes of galaxies and in famous works of art such as Leonardo's 'Mona Lisa' and Salvador Dali's 'Sacrament of the Last Supper.' 253 pages, paperback, Published by Broadway Books, a division of Random House.

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