In computing time scales, the Henon Phase is an
ancient strange attractor. A point is moved through two dimensional
space based on the following transformational equations: 
x_{n+1} = x_{n} cos(a)
 (y_{n}  x_{n}^{2}) sin(a)
y_{n+1} = x_{n} sin(a) + (y_{n} 
x_{n}^{2}) cos(a) 
These images plot the phase space of the Henon system
at arbitrary values of a. 
