The so-called “Golden Ratio,” or φ, occurs when the ratio of the greater of two quantities to the lesser of two quantities is equivalent to the ratio of the sum of the two quantities to the greater of the two quantities. Expressed using incomprehensible math symbols, it looks like this:
Many people believe that the “Golden Ratio” is the pinnacle of aesthetic perfection and that, the closer something is to the Golden Ratio, the more beautiful it is automatically. Many people also believe that the ancient Greeks were obsessed with the Golden Ratio and that they incorporated it into all their buildings and works of art. Unfortunately for those who love a good math story, we have no good evidence to support either of these conclusions.
In fact, the Golden Ratio is not even mentioned in any Greek text until as late as the early third century BC. The Greeks were arguably fascinated with the idea of using mathematical proportions in art to a certain extent, but they were by no means obsessed with the Golden Ratio in particular. The story of how we came to believe that the Greeks were obsessed with the Golden Ratio, though, is as fascinating as it is bizarre. It involves a friend of Leonardo da Vinci, an eccentric nineteenth-century German psychologist, and Donald Duck.
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