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Phi is the Greek letter representing the golden ratio, also called the golden mean or the golden proportion. Break a line segment into two such that the ratio of the whole to the longest segment is the same as the ratio of the two segments, that ratio is the golden ratio. Phi = 1.618034...

Links:

American Phi Music, story and poetry of the Golden Ratio. members.aol.com/loosetooth/phi.html

The 'Phi-Nest' Information on the Golden Section, Divine Proportion, Fibonacci series and phi. goldennumber.net

The Golden Section - the Number and Its Geometry Simple definitions; exact value and first 2000 decimal places; finding the golden section; continued fractions. Simple tricks for your calculator, puzzles and games. www.mcs.surrey.ac.uk/Personal/R.Knott/Fibonacci/phi.html

The Golden Ratio Extension of the number. www.cs.arizona.edu/icon/oddsends/phi.htm

The Golden Ratio: A Golden Opportunity to Investigate Multiple Representations of a Problem Essay and brief introduction by Edwin M. Dickey. www.ite.sc.edu/dickey/golden/golden.html

The Golden Ratio Examines the uses/occurances of phi in biology, art, and ancient times. library.thinkquest.org/C005449

Phi: That Golden Number How to generate the number, GSP script for dividing segments, rectangle and other shapes, the rabbit problem and references. jwilson.coe.uga.edu/../../../../Goldenratio/goldenratio.html

Phi, the golden ratio Provides a definition of Phi, and explains some mathematical background as well as a listing of 1000 digits of the number. astronomy.swin.edu.au/pbourke/analysis/phi

The Golden Mean Explains the theory behind the golden mean and how it can be constructed out of the Fibonacci series. www.vashti.net/mceinc/golden.htm

Ask Dr. Math A list of questions gathered pertaining to Fibonacci and Golden Ratio. mathforum.org/dr.math/tocs/golden.high.html

Ask Yahoo The column at yahoo.com answers the question "What is the "Golden Ratio" and what significance does it have?". ask.yahoo.com/ask/19991201.html

A brief introduction to Golden Ratio An interview with George Cardas, describing his use of the Golden Ratio in high-end audio equipment cables. www.tnt-audio.com/intervis/cardase.html

Golden Number A few words about Golden Number. www.freewebz.com/goldenno

The Golden Ratio and The Fibonacci Numbers A presentation of the relationship between the Golden Ratio and the Fibonacci Numbers from the proceedings of the Friesian School. www.friesian.com/golden.htm

Golden Rectangle Defines the "Golden Rectangle" based on phi and shows some formulars and drawings of the results. mathworld.wolfram.com/GoldenRectangle.html

The Golden Section Short page describing the Golden Section. Includes a description of various constructions and history. www.perseus.tufts.edu/GreekScience/Students/Tim/Golden.html

The Golden Mean At the Favorite Mathematical Constants page. pauillac.inria.fr/algo/bsolve/constant/gold/gold.html

Golden`s Section Formulas Explores a connection between Golden Section on the one hand and Fibonacci and Lucas numbers on the other... milan.milanovic.org/math/english/relations/relation.html

The Greeks and the Golden Mean A paper relating the early discovery of the Golden Mean by the ancient Greeks and their methods of constructing it. www.middlebury.edu/~harris/Humanities/TheGoldenMean.html

The Golden Ratio Project with art references and object construction lessons. www.geom.uiuc.edu/~demo5337/s97b

See Phi An introduction to Phi, the golden rectangle, and Fibonacci numbers. www.seephi.org

Colin and Greg's Golden Ratio Page This is an informative site on an interesting aspect of Geometry: The Golden Ratio. members.tripod.com/~ColinCool/mathindex.html

The Golden Mean by Jerry Bonnell and Robert Nemiroff A Project Gutenberg eBook with one million digits. www.gutenberg.net/etext/744

20,000 Digits A Project Gutenberg Etext. www.gutenberg.net/etext/633

10,000 Digits A web page with phi to 10,000 places. www.ac.wwu.edu/~stephan/webstuff/ratio.digits.html

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