Golden
Mean
Golden Ratio
The number , or
about 1.61803. The Golden Mean arises in many settings, particularly
in connection with the Fibonacci
sequence. Note: The reciprocal of the Golden Mean is about 0.61803, so the Golden Mean equals
its reciprocal plus one. It is also a root of x^{2} – x – 1 =
0.
Note: The Greek letter phi, φ,
is often used as a symbol for the Golden Mean. Occasionally the
Greek letter tau, τ,
is used as well.
See also
Golden rectangle, golden spiral
