NOTE S ON GOLDEN RATIO
GOLDEN RATIO Golden ratio , also known as the golden section, golden mean , or divine proportion , in mathematics , the irrational number (1 + Square root of √ 5 )/2, often denoted by the Greek letter ϕ or τ, which is approximately equal to 1.618. It is the ratio of a line segment cut into two pieces of different lengths such that the ratio of the whole segment to that of the longer segment is equal to the ratio of the longer segment to the shorter segment. It is the limit of the ratios of consecutive terms of the Fibonacci number sequence 1, 1, 2, 3, 5, 8, 13,…, in which each term beyond the second is the sum of the previous two. In modern mathematics, the golden ratio occurs in the description of...