“In the late 18th century, German physicist Ernst Chladni demonstrated the organizing power of sound and vibration in a visually striking manner. He showed that when sand is scattered on metal plates, and a violin bow is drawn across them, the resulting vibrations cause the particles to move to the places where the plate is almost motionless, producing a variety of beautiful, regular, intricate patterns.
A century after Chladni, Margaret Watts-Hughes created images by placing a powder or liquid on a disk then letting it vibrate to the sound of a sustained musical note. She experimented with several musical instruments but had most success using her voice. The particles arranged themselves into geometric shapes, flower patterns (such as pansies, primroses, geraniums, and roses), or the shape of a fern or a tree. The higher the pitch, the more complex the patterns produced; a powerful sustained note produced an imprint of a head of wheat…
From a fascinating piece, written from a Theosophical perspective, called Patterns in Nature by David Pratt. This section explains the patterns formed by the fequencies in the video posted here last week.
Thanks Marcus Scott!