【實用教育app】Double Double-pendulum|最夯免費app

Double pendula side-by-side for demonstration of

- sensitivity to initial conditions (SIC),

- rate of divergence depends on the total energy of the system (Lyapunov exponent),

- existence and shadowing of periodic orbits (POs),

i.e. some fundamental properties of chaotic dynamics.

Slider sets and displays the magnitude of difference between the pendula,

or when viewing POs, it sets the maximum length of nearby POs displayed.

Slow-motion option in settings.

A clean and simple demonstration piece.

(By the author of openpipeflow.org)

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