

The diameter of the light-cymbal is 24 inches; the diameter of the doughnut hole in the center of the light-cymbal is 5.5 inches.
From the studios of electronic arts pioneer, Ron Pellegrino - http://www.ronpellegrinoselectronicartsproductions.org/.
The light-cymbal is a light sculpture by California artist Toby Raetze. When I acquired this piece in the early 1970s Toby was on the faculty of Oberlin College soon to return to his home state of California. At that time he called his pieces sculpted lenses, pieces he literally ground from plexiglass blocks and then polished into lenses that were designed to float on air currents when hung via monofilament and spinners (nearly invisible fishing gear that will be included in the package). Today he calls these sculptures light-cymbals. For more information on Raetzes work go to http://www.stellargallery.com/artists/toby_raetze/index.htm.
The light-cymbal is a multidimensional piece. It works beautifully as a simple mobile (as above) hung in a room with good natural light -- a sun room, a living room, a great room, or even a large bedroom with a lounging area. It floats ever so gently and smoothly on air currents. Light that passes through it is transformed into organic liquid imagery that is seen both in and on the lens as well as through the lens on the walls of the space that surround the piece. The light that is reflected off its surfaces is just as beautiful as that which passes through it. The outer edge of the large disk is ground to refract light so as to create rainbows when high intensity light such as sunlight strikes the edge of the lens. The inner edge of the disk around the doughnut hole is ground to do the same thing. The colors are seen mixing with the imagery on the lens as well as with the reflective surfaces beyond the lens -- walls, mirrors, etc. Of course this is art so its made for the eyes not for words despite my best attempts to describe it here. Because it plays with natural phenomena such as light and air currents, the piece is a superb vehicle for contemplation and relaxation in and out of the performance context. No smoke required.
While we were both on the Oberlin faculty (he in the Art Department and I in the Conservatory of Music) we collaborated on a number of events some of which we were calling interactive sound and light environments, today what would be called installations. Our environments (actually complex systems designs) integrated analog synthesizer generated music, imagery created by high intensity light reflecting off and refracted by his lenses, the movement of audiences into and out of our performance spaces, and specially designed electronic interfaces that facilitated the communication and interaction of the music, the imagery, and the audience movement.


Like any good work of modern art, this light-cymbal carries with it a long and varied history of performances, events, and settings. Its one of the two light sculptures Toby and I used in our multi-day Metabiosis events in Oberlin performance spaces. See the preceding sketch of the system as well as the descriptive newspaper review of one of those public events.
