Cymatics

Cymatics is the study of visible sound and vibration, examining how acoustic energy can organize matter on surfaces or within media into characteristic geometric patterns. In typical demonstrations a plate or membrane is driven at a chosen frequency while powder, salt, sand, or a viscous liquid sits on its surface; as the boundary conditions and frequency change, material accumulates along nodal lines and other features reveal the plate’s vibrational modes. Modern imaging can also show patterns in fluids or gels inside transparent media.

Historically, patterns formed by vibrating plates were observed by the 18th‑century German physicist Ernst Florens Friedrich Chladni, whose sand figures illustrated nodal lines of vibrating plates. In the 1960s Swiss physician Hans Jenny popularized the term cymatics and presented a systematic catalog of sound-induced patterns in his book Cymatics: A Study of the Interaction of Sound and Vibration (1967). The field emphasizes visualization of frequencies, harmonics, and mode shapes, and outcomes depend on material properties, geometry, boundary conditions, and amplitude.

Applications range from physics education and acoustical engineering to art and design; cymatic demonstrations are used to illustrate wave phenomena, vocal resonances, and the relationship between sound and form. While the visuals are striking, claims beyond visualization—as such as therapeutic effects—are not widely supported by rigorous scientific evidence. The discipline continues to influence researchers and artists interested in the tangible forms associated with sound and vibration.