"The strange attractor of the driven pendulum at the parameter values γ= 0.052, a= 0.586, ω= 0.666. The direction of view is diagonal in the state space. The red sections are Poincaré sections at ψ= 0 (in front on the right side) and at x= -π (in front on the left side). The vertical axis is the angular velocity." By Robert Doerner.
Inspired by Chladni patterns, Hans Jenny pioneered the field of Cymatics, a study of visible sound vibration. Tones played at fixed frequencies cause a vibration that creates patterns from light on water.