The interactive installation is a spatially adaptable pneumatic environment at an urban scale. The installation consists of large air-bags or “bubbles” that inflate and deflate in reaction to visitors pushing or bumping the lower inflated volume of each pair. As visitors enter and move through the installation, they must navigate through the lightweight 8’ diameter spheres that fill the space. When the bubbles are bumped, sensors initiate a chaotic exchange of air between the spheres. When no visitors are present, the system returns to its stand-by state: the lower bubble in the pair refillls with air and awaits another interaction.
(via Bubbles – Interactive Pneumatic Environment | Interactive Architecture dot Org)