Photographer's stamp on the back: J. Christian Stuten & Hans Peter Widmer. In 1967, Jenny published the first volume of Cymatics: The Study of Wave Phenomena. The second volume came out in 1972. This book was a written and photographic documentation of the effects of sound vibrations on fluids, powders, and liquid paste. He concluded, "This is not an unregulated chaos; it is a dynamic but ordered pattern.
