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A short video created about an iconic exhibit at the Exploratorium, Ned Kahn's Chaotic Pendulum. An apparently simple set of pendulums is given an initial twist. Intuition says that the resulting motion of this simple system should be, if not simple, at least predictable. Intuition doesn't work with this device though, and its motion is an extremely complicated, and somewhat whimsical, twisting and turning that defies the predictive powers of physics.

Aeolian Landscape is an exhibit in which a miniature wind-swept desert landscape is recreated by an electric fan and finely ground sand that mimics the process of wind picking up and depositing small particles. Visitors can change the direction of the fan, influencing the shape of the dunes.

An clip of the Aeolian Landscape exhibit by artist Ned Kahn. Blowing air sculpts sand into an ever-changing landscape.