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Double Double-pendulum
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Double Double-pendulum
Double Double-pendulum

Double Double-pendulum

Double pendula side-by-side. Simple demonstration piece for chaos. Ad-free.

Developer: Ashley P. Willis
App Size: Varies With Device
Release Date: Nov 23, 2014
Price: Free
1
6 Ratings
Size:
Varies With Device
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Mobile
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,
which increases as time progresses.
When viewing POs, the slider sets the maximum length of nearby POs displayed.

Drag pendulum to starting position, then press play.
If displaying POs, this will select a PO as an initial condition.

Slow-motion option in settings.

A clean and simple demonstration piece.
(By the author of openpipeflow.org)
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Double Double-pendulum 1.10 2016-02-02
2016-02-02 Version History
Now possible to start from a periodic orbit - go into 'POs' mode then drag pendulum to select orbit.
Replaced squares with octagons!

~Ashley P. Willis
More Information about: Double Double-pendulum
Price: Free
Version: 1.10
Size: Varies With Device
Release Date: Nov 23, 2014
Content Rating: Everyone
Developer: Ashley P. Willis
Developer Apps:

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