Phi (Golden Ratio)

The Golden Ratio, denoted by the Greek letter Phi (Φ), is an irrational number approximately equal to 1.618. It occurs when a line is divided into two parts so that the whole length divided by the longer part is equal to the longer part divided by the shorter part. This ratio is considered aesthetically pleasing and appears naturally in various forms, such as sunflower seeds, shells, and art compositions. It has been used historically to create harmonious proportions in architecture and design, rooted in its unique mathematical properties that balance symmetry and natural beauty.