ATRACTOR

Effect of the variation of parameters (simple model)

1. \(D\) Direction of shell coiling (1=dextral, -1=sinistral)
2. \(A\) Size of the spiral aperture (distance between origin and initial point)
3. \(\alpha\) Equiangular angle of the spiral
4. \(\beta\) Angle of enlargement of the helicoidal
5. \(a\) Half length of the major axis of (initial) ellips
6. \(b\) Half length of the minor axis of (initial) ellipse
7. \(\phi\) Angle of ellipse rotation around the horizontal line orthogonal to the plane of the ellipse
8. \(\Omega\) Angle of ellipse rotation around \(OZ\)
9. \(\mu\) Angle of ellipse rotation around horizontal axis