Wired has a brief piece up about artists using sulfuric acid to create– and capture– sonoluminescence, a phenomenon that by its very nature exists on a threshold. Sound waves create light waves, or sound is transformed into light. Those who witness it experience a sort of externalized synaesthesia, a confusion of the senses reflected in measurable outside reality. This aspect is most obvious in the case of the installations, as the photographs, while indicating the visibility of sound, will be viewed by audiences removed from the time frame of sound.

The photographs, however, develop another sort of hybridity and border space through the immortalization of a short-lived phenomenon. Technically, of course, every photograph does record a vanishing frame, an impermanent state, but the understanding that the clouds of color must have disappeared shortly after a picture was taken allows this sort of subject matter to emphasize the liminal area inhabited by all photography in a way that images of old trees and Ozymandias cannot.