Hans Jenny (16 August 1904,

Basel , french: link=no, Bâlois(e), it, Basilese , neighboring_municipalities= Allschwil (BL), Hégenheim (FR-68), Binningen (BL), Birsfelden (BL), Bottmingen (BL), Huningue (FR-68), Münchenstein (BL), Muttenz (BL), Reinach (BL), Riehen (BS ...

– 23 June 1972, Dornach) was a

physician A physician (American English), medical practitioner (Commonwealth English), medical doctor, or simply doctor, is a health professional who practices medicine, which is concerned with promoting, maintaining or restoring health through th ...

and

natural scientist Natural science is one of the branches of science concerned with the description, understanding and prediction of natural phenomena, based on empirical evidence from observation and experimentation. Mechanisms such as peer review and repeatabili ...

who coined the term

cymatics Cymatics (from grc, κῦμα, translit=kyma, translation=wave) is a subset of modal vibrational phenomena. The term was coined by Hans Jenny (1904-1972), a Swiss follower of the philosophical school known as anthroposophy. Typically the surf ...

to describe acoustic effects of

sound wave In physics, sound is a vibration that propagates as an acoustic wave, through a transmission medium such as a gas, liquid or solid. In human physiology and psychology, sound is the ''reception'' of such waves and their ''perception'' by the ...

phenomena.

Life and career

Jenny was born in

, Switzerland. After completing a

doctorate A doctorate (from Latin ''docere'', "to teach"), doctor's degree (from Latin ''doctor'', "teacher"), or doctoral degree is an academic degree awarded by universities and some other educational institutions, derived from the ancient formalism ''l ...

he taught

science Science is a systematic endeavor that builds and organizes knowledge in the form of testable explanations and predictions about the universe. Science may be as old as the human species, and some of the earliest archeological evidence for ...

at the

Rudolph Steiner School Waldorf education, also known as Steiner education, is based on the educational philosophy of Rudolf Steiner, the founder of anthroposophy. Its educational style is holistic, intended to develop pupils' intellectual, artistic, and practical skil ...

Zürich Zürich () is the list of cities in Switzerland, largest city in Switzerland and the capital of the canton of Zürich. It is located in north-central Switzerland, at the northwestern tip of Lake Zürich. As of January 2020, the municipality has 43 ...

for four years before beginning

medical practice Medicine is the science and practice of caring for a patient, managing the diagnosis, prognosis, prevention, treatment, palliation of their injury or disease, and promoting their health. Medicine encompasses a variety of health care practic ...

. In 1967, Jenny published the first volume of ''Cymatics: The Study of Wave Phenomena.'' The second volume came out in 1972, the year he died. This book was a written and photographic documentation of the effects of sound

vibration Vibration is a mechanical phenomenon whereby oscillations occur about an equilibrium point. The word comes from Latin ''vibrationem'' ("shaking, brandishing"). The oscillations may be periodic function, periodic, such as the motion of a pendulum ...

s on

fluid In physics, a fluid is a liquid, gas, or other material that continuously deforms (''flows'') under an applied shear stress, or external force. They have zero shear modulus, or, in simpler terms, are substances which cannot resist any shear ...

powders A powder is a dry, bulk solid composed of many very fine particles that may flow freely when shaken or tilted. Powders are a special sub-class of granular materials, although the terms ''powder'' and ''granular'' are sometimes used to distin ...

and liquid paste. He concluded, "This is not an unregulated

chaos Chaos or CHAOS may refer to: Arts, entertainment and media Fictional elements * Chaos (''Kinnikuman'') * Chaos (''Sailor Moon'') * Chaos (''Sesame Park'') * Chaos (''Warhammer'') * Chaos, in ''Fabula Nova Crystallis Final Fantasy'' * Cha ...

; it is a dynamic but ordered pattern." Jenny made use of crystal

oscillator Oscillation is the repetitive or periodic variation, typically in time, of some measure about a central value (often a point of equilibrium) or between two or more different states. Familiar examples of oscillation include a swinging pendulum ...

s and his so-called tonoscope to set plates and

membrane A membrane is a selective barrier; it allows some things to pass through but stops others. Such things may be molecules, ions, or other small particles. Membranes can be generally classified into synthetic membranes and biological membranes. B ...

s vibrating. He spread

quartz Quartz is a hard, crystalline mineral composed of silica (silicon dioxide). The atoms are linked in a continuous framework of SiO4 silicon-oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical form ...

sand onto a black drum membrane 60 cm in diameter. The membrane was caused to vibrate by

singing Singing is the act of creating musical sounds with the voice. A person who sings is called a singer, artist or vocalist (in jazz and/or popular music). Singers perform music (arias, recitatives, songs, etc.) that can be sung with or without ...

loudly through a cardboard pipe, and the sand produced

symmetrical Symmetry (from grc, συμμετρία "agreement in dimensions, due proportion, arrangement") in everyday language refers to a sense of harmonious and beautiful proportion and balance. In mathematics, "symmetry" has a more precise definiti ...

Chladni patterns Ernst Florens Friedrich Chladni (, , ; 30 November 1756 – 3 April 1827) was a German physicist and musician. His most important work, for which he is sometimes labeled as the father of acoustics, included research on vibrating plates an ...

, named after

Ernst Chladni Ernst Florens Friedrich Chladni (, , ; 30 November 1756 – 3 April 1827) was a German physicist and musician. His most important work, for which he is sometimes labeled as the father of acoustics, included research on vibrating plates an ...

, who had discovered this phenomenon in 1787. Low tones resulted in rather simple and clear pictures, while higher tones formed more complex structures.Deschin, Jacob (April 28, 1968). Science Vibrates to Make Pictures. ''

New York Times ''The New York Times'' (''the Times'', ''NYT'', or the Gray Lady) is a daily newspaper based in New York City with a worldwide readership reported in 2020 to comprise a declining 840,000 paid print subscribers, and a growing 6 million paid d ...

Legacy

Chladni's and Jenny's work influenced

Alvin Lucier Alvin Augustus Lucier Jr. (May 14, 1931 – December 1, 2021) was an American composer of experimental music and sound installations that explore acoustic phenomena and auditory perception. A long-time music professor at Wesleyan University in Mi ...

and helped lead to his composition ''Queen of the South''. Cymatics was also followed up by

Center for Advanced Visual Studies The MIT Program in Art, Culture and Technology (ACT) has its origins in the Center for Advanced Visual Studies (CAVS) at the Massachusetts Institute of Technology (MIT), an arts and research center founded in 1967 by artist and teacher György Kepes ...

(CAVS) founder

György Kepes György Kepes �ɟøɾɟ ˈkɛpɛʃ(October 4, 1906 – December 29, 2001) was a Hungarian-born painter, photographer, designer, educator, and art theorist. After immigrating to the U.S. in 1937, he taught design at the New Bauhaus (later the Sc ...

MIT The Massachusetts Institute of Technology (MIT) is a private land-grant research university in Cambridge, Massachusetts. Established in 1861, MIT has played a key role in the development of modern technology and science, and is one of the mo ...

. 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 Thermodynamics is a branch of physics that deals with heat, work, and temperature, and their relation to energy, entropy, and the physical properties of matter and radiation. The behavior of these quantities is governed by the four laws of ther ...

patterns were made visible by this setup. A special edition of the

Hafler Trio The Hafler Trio is an English conceptual, performance and sound art collaborative between Andrew M. McKenzie, the only permanent member, and guest sound artists, performers, and/or musicians. The project has seen the release of numerous albu ...

's work ''Exactly As I Say'' includes a DVD containing material said to be "based on and extended from techniques suggested by Prof. Hans Jenny". Photographer

Alexander Lauterwasser Alexander Lauterwasser (born 1951 in Überlingen) is a German researcher and photographer who based his work on work done by Ernst Chladni and Hans Jenny in the field of Cymatics. In 2002, Lauterwasser published his book ''Wasser Klang Bilder ...

has also captured imagery of water surfaces set into motion by sound sources ranging from

sine wave A sine wave, sinusoidal wave, or just sinusoid is a curve, mathematical curve defined in terms of the ''sine'' trigonometric function, of which it is the graph of a function, graph. It is a type of continuous wave and also a Smoothness, smooth p ...

s to music by

Beethoven Ludwig van Beethoven (baptised 17 December 177026 March 1827) was a German composer and pianist. Beethoven remains one of the most admired composers in the history of Western music; his works rank amongst the most performed of the classical ...

Karlheinz Stockhausen Karlheinz Stockhausen (; 22 August 1928 – 5 December 2007) was a German composer, widely acknowledged by critics as one of the most important but also controversial composers of the 20th and early 21st centuries. He is known for his groun ...

and

overtone singing Overtone singing – also known as overtone chanting, harmonic singing, polyphonic overtone singing, and diphonic singing – is a set of singing techniques in which the vocalist manipulates the resonances of the vocal tract, in order to arous ...

Publications

* 1954: ''Der Typus'' (The Type) a study in

morphology Morphology, from the Greek and meaning "study of shape", may refer to: Disciplines * Morphology (archaeology), study of the shapes or forms of artifacts * Morphology (astronomy), study of the shape of astronomical objects such as nebulae, galaxies ...

* 1962: ''Das Gesetz der Wiederholung'' (The laws of Repetition) * 1967: ''Kymatic'' (Cymatics) Volume 1 * 1972: ''Kymatic'' (Cymatics) Volume 2

References

{{DEFAULTSORT:Jenny, Hans 1904 births 1972 deaths Scientists from Basel-Stadt 20th-century Swiss physicians Natural scientists 20th-century Swiss physicists Anthroposophists