There is more PHI (pronounced as ‘fai’) can tell about reality than being the 21st letter of the Greek alphabet. Its form is composed of a zero with a one stuck across vertically. This is sometimes symbolized as the digital age. In English, the words literal meaning is Grace of GOD and love.
PHI, as a mathematical tool, has been used by Egyptians to carve the Great Pyramids following a perfect ratio dividing the big O. Greek sculptor in the name of Phidias, studied phi and derived with the design of the Parthenon.
The letter has been coined as The GOLDEN Proportion in 1500s. Leonardi da Vinci, in his Da Divini Proportione produced a vague explanation of PHI by creating an image of a man with four hands and four feet. This drawing has been called the Virtruvian Man.
At present, the symbol is used to designate a voiceless labiodental fricative (f) and aspirated voiceless bilabial plosive in which English language inherits the spelling ‘ph’.