Activities

1. Uncheck the options Sections and Axes.
2. Start the simulation by pressing Start. It is difficult to understand the three dimensional orbit.
3. Check the options Sections and Axes.
4. After a couple of seconds press Clear to erase the initial transitory, i.e., to wait until the system is on the attractor (well, very very close to it).
5. You will see three stroboscopic sections. (You may uncheck Orbit to see them better.)
6. To explore (faster and in greater detail) one section use the simulations Duffing_Poincare and Duffing_baker.