Limelight is a theatrical, mysterious environment in which viewers often feel as though they are witnessing a swirling nebula. Visitors stand on one side of a frosted screen and view projections of magnified grains of dust, pollen, and other particles floating in convection currents created by the heat of a spotlight placed on the opposite side of the screen. The appearance and size of the particles change as they float in and out of focus. When the particles are in focus, they possess color, shape, and form. When out-of-focus, they lose their hard-edge identity but retain their ability to absorb and reflect light. These out-of-focus particles are seen as circles of confusion (out-of-focus highlights).
Dust is everywhere in Tucson. Although we usually do not take time to notice, airborne dust is frequently visible in light rays both inside and out-of-doors. The dust in Limelight was gathered from air vents, floors, and other locations in the Center for Creative Photography.
Activities: Seeing dust
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