Experiments


 

                                                          acrylic painting (1965)                                                    dye bubbles


The first bubble experiments were performed 1973-1975 exploring fluid activity in expanding dye bubbles. The phenomenon ranged from rotating vortex structure to bifurcation events and was archived on paper as prints. Experiments from 1983 to 1985 introduced mechanically inflated bubbles with a 60hz air pump. All sorts of oscillating nucleus morphology evolved and were recorded with video equipment. During the period 1993-1995, dye bubbles and films were mechanically vibrated at frequencies of 1-20hz. Many phenomenon were discovered including the formation of non-winding rotating armed structures and other activity featuring components, which reverse direction of rotation or have opposing orbits.

Much like cymatic resonance, vibration of surface tense films is sensitive to both frequency and amplitude. Spherical, polygonal and superelliptical bubble films were vibrated with acoustic signal between 20 and 50 hertz at various amplitudes in 2008. 

 

                                                    Original website of bubble experiments:

http://web.archive.org/web/20041225142801/http://www.editcorp.com/Personal/John_Choma/index.html



Early work (1984) generated both oscillating nucleus activity and grand spiral galaxy-like structure at various stages of vibrating expansion. Note- additional work with polygonal shaped blowpipes did not produce any different results than those performed with round pipes.


 


Other sessions in that period included large rapidly expanded bubbles with dye pools, which produced multiple and interacting nuclei.

 


Spray patterns of collapsed and burst bubbles yielded novel imagery, which were modified with varied viscosities, combinations of solutions and burst points.


1993-1995 work generated hours of experiments mechanically oscillating bubbles and bubble films in polygonal frames, primarily spherical, rectangular, pentagonal and hexagonal.

 


views of lab apparatus

 

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