A single snaking line, intermingling ripples, and more chaotic looking rhythms, all set to an instrumental version of Led Zepplin‘s Stairway to Heaven.
Built from 15 billiard balls, this pendulum wave demonstration provides an excellent example of “visual traveling waves, standing waves, beating, and random motion.” The apparatus cycles through these patterns because of each pendulum string’s calculated length. An explanation from Harvard.edu’s Science Demonstrations:...
