Dubbele bloem

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http://youtube.com/watch?v=AwT0k09w-jw

The pendulum rotates clockwise and counterclockwise in the most unexpected and surprising fashion, changing directions or suddenly increasing speed just when you think you know what they're going to do next. (A quote from Harvard Natural Sciences Lecture Demonstrations). • Timestamps: • 00:04 Short pendulum, harmonic motion • 00:29 Long pendulum, harmonic motion • 00:48 Double pendulum, chaotic motion • This is a simple physical system that exhibits rich dynamic behavior with a strong sensitivity to initial conditions (American Journal of Physics, 1993). • A double pendulum executes simple harmonic motion (two normal modes) when displacements from equilibrium are small. However, when large displacements are imposed, the non-linear system becomes dramatically chaotic in its motion and demonstrates that deterministic systems are not necessarily predictable (Harvard Natural Sciences Lecture Demonstrations). • Check out uncoupled Wave Pendulum which glows in the dark: • Lego Damped Wave Pendulum • Watch other chaotic and coupled pendulums in action at: • Lego Coupled Pendulums with Magnets: • Lego Coupled Pendulums • Triple Pendulum Chaotic Acrobatics: • Triple Pendulum Chaotic Acrobatics • Double Pendulum Chaotic Gymnastics: • Double Pendulum Chaotic Gymnastics • Rott’s Chaotic Pendulum: • Rott's Chaotic Pendulum • Double Pendulum Chaotic Acrobatics: • Double Pendulum Chaotic Acrobatics • Chaotic Motion with Two Coupled Pendulums in Resonance: • Chaotic Motion with Two Coupled Pend... • Source of design: Make Magazine, • Weekend Project: Double Pendulum

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