Lines of Force
Explanation of the Image...

Lines of Force
This image created with the spectrum intercept algorithm is based on the dynamical system expressed by,
x''= a*sin(ω*t+φ)-b*x-μ*(x2-1)*x',
where x' is the first derivative of x with respect to time, t, and x'' is the second derivative of x with respect to time.

The state variables here are x and x'. The domain of this image in the map of possible states for this system is,
(-9.1, 200)/(9.1, -200)

The parameters are,
a=1, ω=1, φ=0, b=1 and μ=1.

This image differs from the Stress image in that, in the spectrum intercept algorithm, here we integrate four times as long as in Stress, and in that the domain is somewhat reduced here.