On Tumblr, both "the golden spiral" and "the golden ratio" will bring up these types of images. Online, the spiral image is often overlaid on memetic images to demonstrate (either ironically or not) that these viral images are as pleasing as a classical composition. This is also known as "the Rule of Thirds" in art and composition. Since the Enlightenment, the image of the golden spiral has been used as part of classical arts education, especially to teach the work of Leonardo Da Vinci, who used the ratio to create his compositions like the Mona Lisa. However, the spiral was later often referred to as the Fibonacci Spiral, based on the name of the mathematician who determined a series of ever-increasing numbers that approached the golden ratio, but never officially met it. The expression of the equation as a spiral inside of a dividing rectangle comes from this time, when the initial rules of geometry were being written. Furthermore, it is worth mentioning that it was not on this side of the globe that the Fibonacci sequence was written for the first time, it had already appeared in a book on metrics written by the Indian mathematician Pingala, between 450 and 200 BC, demonstrating that the sources of beauty and wisdom go beyond the European cradle.The origin of the mathematical concept of the golden ratio is unknown, but dates back at least as far as the Greek mathematician Euclid. However, it is a fact that the golden ratio was of fundamental importance for the cultural sector and in the construction of an aesthetic sense, especially in the West. In short, it is a debate that will remain constant, after all, scientific data are not enough to translate what is beautiful - this notion being subjective and created according to a person's own references and cultures. According to Keith Devlin, a British mathematician and expert on the subject, all theories that cover aesthetic appeals according to this constant exist only because we humans are good at recognizing patterns and we ignore everything that contradicts them. Furthermore, many mathematicians and designers already question the fact that the golden ratio is a universal formula for aesthetic beauty. Nowadays, fortunately, the discussion about the standardization and universalization of the human body is much more advanced and does not just surrender to mathematical factors. The higher the numbers chosen, the closer the result is to the golden ratio. After all, when dividing a number from the Fibonacci sequence by its previous one, the result will be closer and closer to 1.618. This constant creates a very close relationship with the golden number (1.61803399), called the golden ratio, which mathematically represents the "perfection of nature". In its content, the fundamental thing is to know that whatever the number in the sequence is, it is the result of the sum of the two previous ones. Leonardo of Pisa, better known as Fibonacci, wrote his series of numbers (1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233.) to solve a hypothetical problem of breeding rabbits in your Calculation Book. But, after all, how does this sequence relate to architecture? The famous sequence of numbers became known as the "secret code of nature" and can be seen in the natural world in several cases. One of the most famous series of numbers in history, the Fibonacci sequence was published by Leonardo of Pisa in 1202 in the " Liber Abaci", the "Book of Calculus".
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