Editing Cymatics (section)

{{short description|Creation of visible patterns on a vibrated plate}}
[[Image:Resonance Chladni Soundboard Harpsichord Clavecin.jpg|thumb|200px|Resonance made visible with black seeds on a harpsichord soundboard]]
[[Image:CornstarchCymatics cc.jpg|thumb|right|200px|Cornstarch and water solution under the influence of sine wave vibration]]
[[File:Cymatics-FromThe-Film Inner Worlds Outer Worlds 1.ogg|200px|thumb|A demonstration of sand forming cymatic patterns on a metal plate.]]
'''Cymatics''' (from {{langx|grc|κῦμα|translit=kŷma|translation=wave}}) is a subset of [[normal mode|modal vibrational phenomena]]. The term was coined by Swiss physician [[Hans Jenny (cymatics)|Hans Jenny]] (1904–1972). Typically the surface of a plate, diaphragm, or membrane is vibrated, and regions of maximum and minimum displacement are made visible in a thin coating of particles, paste, or liquid.<ref>{{cite book |last=Jenny |first=Hans |title=Cymatics: A Study of Wave Phenomena & Vibration |date=February 2024 |publisher=[[MACROmedia Publishing]] |isbn=978-1-888138-10-8 |edition=5th |location=United States |language=English}}</ref> Different patterns emerge in the excitatory medium depending on the geometry of the plate and the driving frequency.

The apparatus employed can be simple, such as the Chinese [[standing bell|spouting bowl]], in which copper handles are rubbed and cause the copper bottom elements to vibrate. Other examples include the [[Ernst Chladni#Chladni figures|Chladni plate]]<ref>{{cite web |title= Instructional Research Lab: Chladni Plate |url= http://www.physics.ucla.edu/demoweb/demomanual/acoustics/effects_of_sound/chladni_plate.html |publisher= University of California, Los Angeles |accessdate=3 September 2009}}</ref> and the so-called cymascope.