Cymatics (from Greek: κῦμα "wave") is the study of visible sound and vibration, a subset of modal phenomena. 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. Different patterns emerge in the exitatory medium depending on the geometry of the plate and the driving frequency.
The apparatus employed can be simple, such as a Chladni Plate or advanced such as the CymaScope, a laboratory instrument that makes visible the inherent geometries within sound and music.[clarification needed]
The generic term for this field of science is the study of modal phenomena, retitled Cymatics by Hans Jenny, a Swiss medical doctor and a pioneer in this field. The word Cymatics derives from the Greek 'kuma' meaning 'billow' or 'wave,' to describe the periodic effects that sound and vibration have on matter.
The study of the patterns produced by vibrating bodies has a venerable history. One of the earliest to record that an oscillating body displayed regular patterns was Galileo Galilei. In Dialogue Concerning the Two Chief World Systems (1632), he wrote:As I was scraping a brass plate with a sharp iron chisel in order to remove some spots from it and was running the chisel rather rapidly over it, I once or twice, during many strokes, heard the plate emit a rather strong and clear whistling sound: on looking at the plate more carefully, I noticed a long row of fine streaks parallel and equidistant from one another. Scraping with the chisel over and over again, I noticed that it was only when the plate emitted this hissing noise that any marks were left upon it; when the scraping was not accompanied by this sibilant note there was not the least trace of such marks.
On July 8, 1680, Robert Hooke was able to see the nodal patterns associated with the modes of vibration of glass plates. Hooke ran a bow along the edge of a glass plate covered with flour, and saw the nodal patterns emerge.
In 1787, Ernst Chladni repeated the work of Robert Hooke and published "Entdeckungen über die Theorie des Klanges" ("Discoveries in the Theory of Sound"). In this book, Chladni describes the patterns seen by placing sand on metal plates which are made to vibrate by stroking the edge of the plate with a bow.
Cymatics was explored by Hans Jenny in his 1967 book, Kymatik (translated Cymatics). Inspired by systems theory and the work of Ernst Chladni, Jenny began an investigation of periodic phenomena but especially the visual display of sound. He used standing waves, piezoelectric amplifiers, and other methods and materials.
Influences in art
Hans Jenny's book influenced Alvin Lucier and, along with Chladni, helped lead to Lucier's composition Queen of the South. Jenny's work was also followed up by Center for Advanced Visual Studies (CAVS) founder György Kepes at MIT. His work in this area included an acoustically vibrated piece of sheet metal in which small holes had been drilled in a grid. Small flames of gas burned through these holes and thermodynamic patterns were made visible by this setup.
Based on work done in this field, photographer Alexander Lauterwasser captures imagery of water surfaces set into motion by sound sources ranging from pure sine waves, to music by Ludwig van Beethoven, Karlheinz Stockhausen, electroacoustic group Kymatik (who often record in surround sound ambisonics), and overtone singing.
Rosslyn Chapel's carvings are thought to contain references to Cymatics patterns and in 2005 composer Stuart Mitchell and his father T.J.Mitchell created a work realised by the use of matching Cymatics/Chladni patterns to the 13 geometric symbols carved onto the faces of 213 cubes emanating from 14 arches. They have named the completed work The Rosslyn Motet and has received a great deal of media publicity and acclaim from scientific and musicological sources .
- List of wave topics
- Mode shape
- Music visualization
- Visual music
- Cymatic therapy
- Harmonic analysis
- ^ Jenny, Hans (July 2001). Cymatics: A Study of Wave Phenomena & Vibration (3rd ed.). Macromedia Press. ISBN 1-8881-3807-6.
- ^ "Instructional Research Lab: Chladni Plate". University of California, Los Angeles. http://www.physics.ucla.edu/demoweb/demomanual/acoustics/effects_of_sound/chladni_plate.html. Retrieved 3 September 2009.
- ^ Good Vibrations, Joyce McLaughlin, American Scientist, July–August 1998, Volume: 86 Number: 4 Page: 342, DOI: 10.1511/1998.4.342
- ^ Ernst Florens Friedrich Chladni, Institute for Learning Technologies, Columbia University
- ^ Pg 101 Oxford Dictionary of Scientists- Oxford University Press- 1999
- ^ Jenny, Hans (1967). Kymatik. ISBN 1-888138-07-6
- ^ György Kepes profile at MIT
- ^ Wilson, Chris. "The Rosslyn Code". Slate. http://www.slate.com/id/2294490/pagenum/all/. Retrieved 19 May 2011.
- Global Cymatics Community
- Cymatics, A Study of Wave Phenomena
- Cymatics Conference
- Cymatica.net : Architectural thesis investigation into the synthesis of space and form generated from sound
- Cymatics.org: Cymatics images & video capturing the interaction of sounds with liquids
- Video of Cymatics of salt grains on vibrating square metal plate
- DIY Cymatics
- TED Talks: Evan Grant: Making sound visible through cymatics
Concepts Experimental music Related contemporary
classical music genres
Extended techniques Related visual art genres
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