The Golden ratio is a number found by dividing a line into two parts so that the longer part divided by the smaller part is also equal to the whole length divided by the longer part. It is symbolized using phi, after the Greek alphabet. In an equation form, it looks like this: a/b = (a+b)/a = 1.618033988749894842 As with pi, the digits go on and on, theoretically into infinity. Phi is usually rounded off to 1.618.
Usain Bolt may have been the only athlete who upstaged swimmer Michael Phelps in the recent Beijing Olympics. The Jamaican sprinter surprisingly set two individual world records in the 100 and 200 meters and was part of a 4×100 relay world record Jamaican team.