Phi, the Greek symbol for the number 1.618...

Phi
The Golden Number

1.61803398874989...

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Means
Five (5) and phi
Powers of Phi
The Phi Phormula?
Pi, Phi and Fibonacci
Pascal's Triangle
Numbers 89 & 109
Repeating 24 pattern

 

The Colours of Infinity - The Beauty and Power of Fractals
Book and original TV documentary on DVD with soundtrack by Pink Floyd's David Gilmour

 


Have some phun sharing
phi with others.  More...

Powers of Phi


Phi has a unique additive relationship

The powers of phi have unusual properties in that they are related not only exponentially, but are additive as well.  We know that:

Phi 2 = Phi + 1

Which is the same as:

Phi 2 = Phi 1 + Phi 0

And this leads to the fact that for any n:

Phi n+2 = Phi n+1 + Phi n

Thus each two successive powers of phi add to the next one!

n

Phi n

0

1.000000

1

1.618034

2

2.618034

3

4.236068

4

6.854102

5

11.090170

6

17.944272

Powers of Phi and its reciprocal

Another little curiosity involves taking phi to a power and then adding or subtracting its reciprocal:

For any even integer n:

Phi n  +  1 / Phi n = a whole number

For any odd integer n:

Phi n  -  1 / Phi n = a whole number

Examples are shown in the tables below:

for n = even integers

n

Phin 1/Phi n Phi n + 1/Phi n

0

1.000000000

1.000000000

2

2

2.618033989

0.381966011

3

4

6.854101966

0.145898034

7

6

17.944271910

0.055728090

18

8

46.978713764

0.021286236

47

10

122.991869381

0.008130619

123

for n = odd integers

n

Phi n 1/ Phi n Phi n - 1/Phi n

1

1.618033989

0.618033989

1

3

4.236067977

0.236067977

4

5

11.090169944

0.090169944

11

7

29.034441854

0.034441854

29

9

76.013155617

0.013155617

76

11

199.005024999

0.005024999

199

The whole numbers generated by this have a relationship among themselves, creating an additive series, similar in structure to the Fibonacci series, and which also converges on phi:

Exponent n 0 1 2 3 4 5 6 7 8 9 10 11
Result 2 1 3 4 7 11 18 29 47 76 123 199

 

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Links
Beauty Analysis
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Phi in Multimedia
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Learn to apply Fibonacci techniques to stock market analysis at Elliott Wave International

Investors:
Apply Phi and
Fibonacci principles
to the stock market

Elliott Wave International Market Watch


Nautilus spiral jewelry in gold or silver

The Sacred Geometry of
Ka Gold Jewelry

Ka Gold Jewelry - Golden Spirals and more


- Phi - The Golden Number - Ø
Your source to some of the Net's "phinest" information on the
Golden Section / Mean / Proportion / Ratio / Number,
Divine Proportion, Fibonacci Series and Phi ( 1.618 0339 887... )

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