The article defines cymatics as "a subset of modal vibrational phenomena": patterns that appear in particles, pastes or liquids on a vibrating surface. Its history section runs from Robert Hooke, who in 1680 watched flour arrange itself on a vibrating glass plate, through Ernst Chladni's systematic sand figures, to Michael Faraday's patterns on liquids, to Hans Jenny (1904-1972), the Swiss physician who coined the word and published two volumes on it.
The second half is mostly cultural: album projections, the Eurovision 2022 logo, a title sequence. Useful as a map of where the imagery has travelled, thin on how anyone actually builds a rig.
Worth knowing that the page is filed under the Pseudoscience category. The plate and fluid physics itself is ordinary mechanics — nodal lines, modal shapes, parametric instability. The label attaches to what has been claimed in cymatics' name: healing frequencies, sound imprinting consciousness, water memory. Read the history, treat the framing with care.