Echo of Polyhymnia - 29Hz*Prints are unframed Named after Polyhymnia, The one of many songs the Muse of sacred poetry. Polyhymnia is also sometimes credited as being the Muse of geometry and meditation. Featuring three Cymatics photographs of the same frequency, but increasing amplitude, and thereby increasing complexity. Created by photographing light reflections off the surface of water while being vibrated to a resonant mode, forming standing waves of interference. See