The Golden Ratio: The Story of PHI, the World's Most Astonishing NumberThroughout history, thinkers from mathematicians to theologians have pondered the mysterious relationship between numbers and the nature of reality. In this fascinating book, Mario Livio tells the tale of a number at the heart of that mystery: phi, or 1.6180339887...This curious mathematical relationship, widely known as "The Golden Ratio," was discovered 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 shown a propensity to appear in the most astonishing variety of places, from mollusk shells, sunflower florets, and rose petals to the shape of the galaxy. Psychological studies have investigated whether the Golden Ratio is the most aesthetically pleasing proportion extant, and it has been asserted that the creators of the Pyramids and the Parthenon employed it. It is believed to feature in works of art from Leonardo da Vinci's Mona Lisa to Salvador Dali's The Sacrament of the Last Supper, and poets and composers have used it in their works. It has even been found to be connected to the behavior of the stock market! The Golden Ratio is a captivating journey through art and architecture, botany and biology, physics and mathematics. It tells the human story of numerous phifixated individuals, including the followers of Pythagoras who believed that this proportion revealed the hand of God; astronomer Johannes Kepler, who saw phi as the greatest treasure of geometry; such Renaissance thinkers as mathematician Leonardo Fibonacci of Pisa; and such masters of the modern world as Goethe, Cezanne, Bartok, and physicist Roger Penrose. Wherever his quest for the meaning of phi takes him, Mario Livio reveals the world as a place where order, beauty, and eternal mystery will always coexist. 
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LibraryThing Review
User Review  themulhern  LibraryThingTo write a whole book about the number zero requires a good deal of imagination and random association. That does not seem to be the case for the golden ratio. I've only gotten as far as Chapter 5 ... Read full review
LibraryThing Review
User Review  palaverofbirds  LibraryThingFor the love of Fibonacci numbers, roses, geometry and fractals. What do pineapples and spiral galaxies have in common? PHI! This is nerd candy. Read full review
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The Golden Ratio: The Story of Phi, the World's Most Astonishing Number Mario Livio Limited preview  2003 
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Abu'lWafa aesthetic ancient angles appeared artists astronomer Babylonians Bartók base beauty Benford's law calculate century B.C. claims composed concept construction cube described diagonal digits dimensions discovered Divine Proportion dodecahedron Dürer Egyptian equal equation Euclid example exist expressed fact false vacuum famous Fibonacci numbers Fibonacci sequence Figure fractal fractions geometry Golden Number Golden Ratio Golden Rectangle Golden Section Greek human icosahedron interest irrational numbers Kepler known length Leonardo logarithmic spiral Luca Pacioli Madonna mathe mathematician mathematics matical means measure Modulor nature obtain Pacioli painter paintings pairs Parthenon pattern Penrose Penrose tilings pentagon pentagram percent petals phyllotaxis physicist Piero planets Platonic solids Platonic view precisely prime problem properties Pyramid Pythagoras Pythagorean quasicrystals represent Reprinted with permission shape side simple sphere square stars symbol symmetry theorem tiling tion triangle universe whole numbers words wrote