Phi
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Phi (uppercase Φ, lowercase φ), is the 21st letter of the Greek alphabet, and the "ph" sound in Ancient Greek (this sound changed to "f" some time in the 1st century AD; in Modern Greek, phi is the "f" sound). In the system of Greek numerals, it has a value of 500. The Cyrillic letter Ф came from Phi. In English, φ is pronounced like "f" but transliterated (re-written) as "ph" in words which originate in Ancient Greek. In words which originate in Modern Greek (for example, feta), φ is transliterated as "f". The letter Phi is used to represent the golden ratio (which is about 1.618).[1]
Related pages
[change | change source]References
[change | change source]- ↑ Weisstein, Eric W. "Golden Ratio". mathworld.wolfram.com. Retrieved 2020-08-10.
