Phi (letter)
From Wikinfo
| |||
| Greek alphabet | |||
|---|---|---|---|
| Αα | Alpha | Νν | Nu |
| Ββ | Beta | Ξξ | Xi |
| Γγ | Gamma | Οο | Omicron |
| Δδ | Delta | Ππ | Pi |
| Εε | Epsilon | Ρρ | Rho |
| Ζζ | Zeta | Σσς | Sigma |
| Ηη | Eta | Ττ | Tau |
| Θθ | Theta | Υυ | Upsilon |
| Ιι | Iota | Φφ | Phi |
| Κκ | Kappa | Χχ | Chi |
| Λλ | Lambda | Ψψ | Psi |
| Μμ | Mu | Ωω | Omega |
| Obsolete letters | |||
| File:Digamma uc lc.svg | Digamma | File:Qoppa uc lc.svg | Qoppa |
| File:San uc lc.svg | San | File:Sampi uc lc.svg | Sampi |
| Other characters | |||
| File:Stigma uc lc.svg | Stigma | File:Sho uc lc.svg | Sho |
| File:Heta uc lc.svg | Heta | ||
| Greek diacritics | |||
Phi (uppercase Φ lowercase φ), is the letter of the Greek alphabet, used to represent the "[pʰ]" sound in Greek. In the system of Greek numerals it has a value of 500. Letters that came from it include the Roman F and Cyrillic Ф.
The lower-case letter φ is used as a symbol for:
- Euler's phi function φ(n)
- The golden mean.
- In physics and mathematics, the value of an angle.
- The work function.
- The empty set.
- In signal processing, the phase of a sinusoidal signal.
The upper-case letter Φ is used as a symbol for:
Other meanings:
References
- Adapted from the Wikipedia article, "Phi_(letter)" http://en.wikipedia.org/wiki/Phi_(letter), used under the GNU Free Documentation License
