phi

the 21st letter of the Greek alphabet

Table_Greekletters Phi (upper case Φ, lower case φ or phisymbol ) is the 21st letter of the Greek alphabet. It is pronounced ''fee'' by modern Greeks, or ''fie'' (depending on context and, often, personal inclination), representing the phoneme 'f'. In Ancient Greek it represented a strongly aspirated 'p'. In the system of Greek numerals it has a value of 500.The lower-case letter φ (or often its variant, phisymbol ) is used as a symbol for:

The golden ratio 1.618... in mathematics, art, and architecture.

Euler's totient function in number theory. Also called Euler's phi function, φ(n)

The argument of a complex number in mathematics.

The value of a angleplane angle in physics and mathematics.

Electric potential in physics.

The work function in electronics.

The phase (waves)phase of a wave in signal processing.

In spherical coordinates phi is usually used to represent the angle to the z Coordinate axisaxis.

In engineering, the diameter symbol is often referred to as "phi". This symbol is used to indicate the diameter of a circular section, for example 14 means the diameter of the circle is 14 units.

In structural engineering, Φ is notation for a strength (or resistance) reduction factor, used to account for statistical variabilities in materials and construction methods.

Any function in mathematics.The upper-case letter Φ is used as a symbol for:

The magnetic flux in physics.

The Cumulative Normal Distribution function in statistics.See also phi !phenomenon.wiktionarypar Phi Category:Greek !lettersda:Phide:Phiel:Φιes:Î ¦fr:Phinl:Phi? !(letter)ja:Φno:Phipl:Fipt:Φf i:Fiisv:Phizh:Φ

National Multicultural Greek Council (NMGC)
The National Multicultural Greek Council (NMGC) is the umbrella council for Multicultural Greek Letter Organizations. NMGC is comprised of 12 member organizations who meet annually to discuss the development and implementation of the council's mission.
http://www.nationalmgc.org/

Phi Beta Kappa
Organization founded on December 5, 1776, at the College of William and Mary. Information on chapters, advocacy programs, news, publications, awards and scholarships.
http://www.pbk.org/

Phi Kappa Phi - Official Site
Oldest and largest collegiate honor society dedicated to the recognition and promotion of academic excellence in all disciplines. Founded in 1897.
http://www.phikappaphi.org

Alpha Phi Omega - Official Site
National site for Alpha Phi Omega, a national service fraternity. Includes FAQ, bylaws, pledge manual, and other documents; every chapter, section and region; calendar of events; and lots of service info.
http://www.apo.org/

Phi Theta Kappa - Official Site
Established in 1918 by Missouri two-year college presidents, Phi Theta Kappa serves to recognize and encourage the academic achievement of two-year college students.
http://www.ptk.org

Alpha Phi International Women's Fraternity - Official Site
Alpha Phi was founded in 1872 at Syracuse University as one of the first Greek societies for women. It now has collegiate and alumnae chapters in the United States and Canada.
http://www.alphaphi.org/