If the total length of a line segment is the denominator of the golden ratio plus the unit length of the molecule, if we divide it into two halves, the long one is the denominator unit length and the short one is the molecular unit length, then the ratio of the short line length to the long line length is the golden ratio.
Suppose that the first two numbers of a series are 1 and 1, and each number after it is the sum of the first two numbers. For example: 1, 1, 2, 3, 5, 8, 13, 2 1, 34, 55, 89, 144 ... This series is called Fibonacci series, and these numbers are called Fibonacci series. It is found that the ratio of two adjacent Fibonacci numbers gradually approaches the golden ratio with the increase of serial number.
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The painters found that the painting with the ratio of 0.6 18: 1 was the most beautiful, and the golden section was used in Leonardo da Vinci's works Vitruvian Man, Mona Lisa and The Last Supper. Nowadays, the average length of women below the waist only accounts for 0.58 of their height, so Venus, the famous statue of broken arm in ancient Greece, and Apollo, the sun god, specially lengthened their legs to make their ratio to their height 0.6 18.
Architects especially prefer the number 0.6 18. Whether it is the pyramids in ancient Egypt, Notre Dame de Paris, the Eiffel Tower in France in the past century, or the Parthenon in Athens, Greece, there are footprints of the golden section.
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