This kinetic sculpture is one of a series, titled “Breathing Lessons,” in which Lahaie explores light, water, and breath. By giving her pieces movement, she aims to animate the glass, to call attention to the unique qualities of the material. The ability of glass to capture light and to suggest different elements in nature—for example, water, fire, stone, clay, and air—is seen in works throughout this gallery. In Silver Gray Nocturne Triptych, light is projected through the glass panels, which are backed by a sheer fabric. A brush attached to a low-r.p.m. motor pushes the fabric against the glass and then releases it, creating shifting patterns of shadow and reflection in the same way that light plays on the surface of water. The shadows expand and contract rhythmically, drifting in and out of focus.