“Dimensions Variable” is the standard term for designating the size of an art object which varies or cannot be physically bounded. The artists included in the exhibition sought to explore the ephemeral, elusive, and undefinable by creating and utilizing specific substances and objects with little or no “art” identity: light, prisms, water, motors, plastic, wires, and gas. In so doing, the artists achieved phenomena not commonly visible in art, and were able to express observations and ideas that resisted verbalization — these means challenged the viewer to see what was not physically there.