Mystery is spread all over the world. There is a touch of science in every part , a wonderful subject of science is mathematics. And would you be surprised if I said that mathematics is spread in almost every part of the world, even in the universe ? Now let's talk about a mysterious part of mathematics which is the Golden Ratio , which in English is the Golden Ratio . Nearly two and a half thousand years ago, Pythagoras , Euclid , Fibonacci , Kepler , Pisa , King Penrose and many other scientists worked on this golden ratio. All of them have found this ratio in the innumerable parts of the creation of the Creator. This number seems to exist in all parts of nature and space. This number is not only used by mathematicians , but also by people of different professions including distinguished painters , architects and sculptors. We have been talking about the golden ratio for so long but the ratio has not been mentioned. 1.6160338 ...... is the golden ratio. If the ratio of the ratio of length to width of a rectangle is 1.618, then it is said to have a golden ratio. Since it is a ratio of two sides, its value is never negative or zero. It is expressed by Latin Φ (PHI / Fi). The mathematician Euclid first gave a geometric explanation of PHI in his Elementus. He imagined a point on a straight line (called the golden point) so that the line divides in such a way that small part / big part = big part / whole part. And the most surprising thing is that the value of the above ratio will always be 1.6180…: 1 (PHI: 1) The golden ratio is expressed in two ways Golden Rectangle and Golden Spiral . Not mathematical calculations, I will explain another time, today just stay in the event. The Fibonacci series, however, is closely related to the PHI , and may have been introduced to the Fibonacci series when arithmetic in math books. 1,1,2,3,5,8,13,21,34,55,89,144 ………… It is an infinite series and its specialty is that each of its terms is the sum of the previous two terms. Dividing the first 2-3 digits of the series by counting the next number without any number in this series gives 1.61 which is the golden ratio . The name was coined by the renowned painter and scientist Leonardo da Vinci , known as the Golden Ratio Master. Because he was the first to notice the presence of PHI in the human body ; Understand the meaning of this (he did a lot of research on the external and internal organs of the dead human body. The pictures of human organs that we see in the doctor's chambers were first designed by Vinci).