Difference between revisions of "Golden Ratio"
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| − | The golden ratio is a number, commonly known as phi, defined as | + | The golden ratio is a number, commonly known as phi (<math>\varphi</math>), defined as |
| + | <math>\varphi^2 = \varphi + 1</math>. The value of phi is | ||
:<math>\frac{1 + \sqrt{5}}{2}</math> | :<math>\frac{1 + \sqrt{5}}{2}</math> | ||
Revision as of 02:35, March 26, 2007
The golden ratio is a number, commonly known as phi (), defined as . The value of phi is
Phi is an irrational number. In decimal form it is often written
- 1.618...
It has been observed that the golden ration is evident in the arrangement of branches along the stems of plants, and of veins in leaves.