TOYS...  

                                                                          Nonlinear Dynamics

made by Takashi Kanamaru and J. Michael T. Thompson  

Duffing oscillator made by Tsvetelin Tsankov

Takens-Bogdanov
  made by Tsvetelin Tsankov

Van der Pol made by Tsvetelin Tsankov

Tim's Toys made by Tim Jones

[Top to Bottom: Duffing, van der Pol, and Rossler attractors]made by Matthew C. Washik

                                                                            Hydrogen Atom

Excited state of Hydrogen Atom           made by  Glenn Winship

Another excited state of Hydrogen Atom     made by Glenn Winship